SEC Info℠  
    Home      Search      My Interests      Help      Sign In      Please Sign In
 
Warning! emoji
  Database maintenance is being performed.  If something doesn’t work, please try again soon.

Willis Towers Watson PLC – ‘10-K’ for 12/31/18 – ‘EX-101.PRE’

On:  Wednesday, 2/27/19, at 4:20pm ET   ·   For:  12/31/18   ·   Accession #:  1564590-19-4912   ·   File #:  1-16503

Previous ‘10-K’:  ‘10-K/A’ on 6/6/18 for 12/31/17   ·   Next:  ‘10-K’ on 2/26/20 for 12/31/19   ·   Latest:  ‘10-K’ on 2/22/24 for 12/31/23

Find Words in Filings emoji
 		  in    Show  and   ↓Hints

  As Of               Filer                 Filing    For·On·As Docs:Size             Issuer                      Filing Agent

 2/27/19  Willis Towers Watson PLC          10-K       12/31/18  153:59M                                    ActiveDisclosure/FA

Annual Report   —   Form 10-K   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-K        Annual Report                                       HTML   3.21M 
 2: EX-21.1     Subsidiaries List                                   HTML    139K 
 3: EX-23.1     Consent of Experts or Counsel                       HTML     44K 
 4: EX-23.2     Consent of Experts or Counsel                       HTML     44K 
 5: EX-31.1     Certification -- §302 - SOA'02                      HTML     51K 
 6: EX-31.2     Certification -- §302 - SOA'02                      HTML     51K 
 7: EX-32.1     Certification -- §906 - SOA'02                      HTML     46K 
 8: EX-32.2     Certification -- §906 - SOA'02                      HTML     46K 
15: R1          Document and Entity Information                     HTML     79K 
16: R2          Consolidated Statements of Comprehensive Income     HTML    134K 
17: R3          Consolidated Balance Sheets                         HTML    158K 
18: R4          Consolidated Balance Sheets (Parenthetical)         HTML     67K 
19: R5          Consolidated Statements of Cash Flows               HTML    157K 
20: R6          Consolidated Statements of Changes in Equity        HTML    159K 
21: R7          Consolidated Statements of Changes in Equity        HTML     45K 
                (Parenthetical)                                                  
22: R8          Nature of Operations                                HTML     48K 
23: R9          Basis of Presentation, Significant Accounting       HTML    165K 
                Policies and Recent Accounting Pronouncements                    
24: R10         Merger Acquisitions and Divestitures                HTML     69K 
25: R11         Revenue                                             HTML    599K 
26: R12         Segment Information                                 HTML    288K 
27: R13         Restructuring Costs                                 HTML    477K 
28: R14         Income Taxes                                        HTML    443K 
29: R15         Fixed Assets                                        HTML    237K 
30: R16         Goodwill and Other Intangible Assets                HTML    494K 
31: R17         Derivative Financial Instruments                    HTML    105K 
32: R18         Debt                                                HTML    223K 
33: R19         Fair Value Measurements                             HTML    254K 
34: R20         Retirement Benefits                                 HTML   1.88M 
35: R21         Commitments and Contingencies                       HTML    191K 
36: R22         Supplementary Information for Certain Balance       HTML    204K 
                Sheet Accounts Supplementary Information for                     
                Certain Balance Sheet Accounts (Notes)                           
37: R23         Other Income, Net                                   HTML     83K 
38: R24         Accumulated Other Comprehensive Loss                HTML    260K 
39: R25         Share-Based Compensation                            HTML    250K 
40: R26         Earnings Per Share                                  HTML     99K 
41: R27         Supplemental Disclosures of Cash Flow Information   HTML     84K 
42: R28         Quarterly Financial Data (Unaudited)                HTML    163K 
43: R29         Financial Information for Issuers and Other         HTML   2.58M 
                Guarantor Subsidiaries                                           
44: R30         Basis of Presentation, Significant Accounting       HTML    240K 
                Policies and Recent Accounting Pronouncements                    
                (Policies)                                                       
45: R31         Basis of Presentation, Significant Accounting       HTML     54K 
                Policies and Recent Accounting Pronouncements                    
                (Tables)                                                         
46: R32         Merger Acquisitions and Divestitures (Tables)       HTML     60K 
47: R33         Revenue (Tables)                                    HTML    598K 
48: R34         Segment Information (Tables)                        HTML    285K 
49: R35         Restructuring Costs (Tables)                        HTML    477K 
50: R36         Income Taxes (Tables)                               HTML    425K 
51: R37         Fixed Assets (Tables)                               HTML    236K 
52: R38         Goodwill and Other Intangible Assets (Tables)       HTML    499K 
53: R39         Derivative Financial Instruments (Tables)           HTML    101K 
54: R40         Debt (Tables)                                       HTML    202K 
55: R41         Fair Value Measurements (Tables)                    HTML    253K 
56: R42         Retirement Benefits (Tables)                        HTML   1.87M 
57: R43         Commitments and Contingencies (Tables)              HTML     84K 
58: R44         Supplementary Information for Certain Balance       HTML    212K 
                Sheet Accounts Supplementary Information for                     
                Certain Balance Sheet Accounts (Tables)                          
59: R45         Other Income, Net (Tables)                          HTML     82K 
60: R46         Accumulated Other Comprehensive Loss (Tables)       HTML    262K 
61: R47         Share-Based Compensation (Tables)                   HTML    236K 
62: R48         Earnings Per Share (Tables)                         HTML     96K 
63: R49         Supplemental Disclosures of Cash Flow Information   HTML     84K 
                (Tables)                                                         
64: R50         Quarterly Financial Data (Unaudited) (Tables)       HTML    163K 
65: R51         Financial Information for Issuers and Other         HTML   2.56M 
                Guarantor Subsidiaries (Tables)                                  
66: R52         Nature of Operations (Details)                      HTML     46K 
67: R53         Basis of Presentation, Significant Accounting       HTML    107K 
                Policies and Recent Accounting Pronouncements -                  
                Narrative (Details)                                              
68: R54         Basis of Presentation, Significant Accounting       HTML     62K 
                Policies and Recent Accounting Pronouncements -                  
                Finite-lived Intangible Assets (Details)                         
69: R55         Merger, Acquisitions and Divestitures - Narrative   HTML     74K 
                (Details)                                                        
70: R56         Merger, Acquisitions and Divestitures -             HTML     65K 
                Calculation of Aggregate Merger Consideration                    
                (Details)                                                        
71: R57         Merger, Acquisitions and Divestitures - Global      HTML     53K 
                Wealth Solutions Divestiture (Details)                           
72: R58         Merger, Acquisitions and Divestitures - All         HTML     52K 
                divestitures (Details)                                           
73: R59         Revenue - Schedule of Effect of ASC 606 on          HTML    183K 
                Financial Statements (Details)                                   
74: R60         Revenue - Narrative (Details)                       HTML    133K 
75: R61         Revenue - Schedule of Effect of ASC 606 on Items    HTML    118K 
                in Retained Earnings and Earnings (Details)                      
76: R62         Revenue - Schedule of Disaggregation of Revenue     HTML    182K 
                (Details)                                                        
77: R63         Revenue - Schedule of Revenue by Geography          HTML     89K 
                (Detail)                                                         
78: R64         Revenue - Schedule of Contract Balances (Details)   HTML     65K 
79: R65         Revenue - Schedule of Changes in Allowance for      HTML     56K 
                Doubtful Accounts (Details)                                      
80: R66         Revenue - Schedule of Remaining Performance         HTML     55K 
                Obligations (Details 1)                                          
81: R67         Revenue - Schedule of Remaining Performance         HTML     45K 
                Obligations (Details)                                            
82: R68         Revenue - Schedule of Capitalized and Deferred      HTML     54K 
                Costs (Details)                                                  
83: R69         Segment Information - Narrative (Details)           HTML     46K 
84: R70         Segment Information - Revenue (Net of Reimbursable  HTML     78K 
                Expenses) of the Reported Segments (Details)                     
85: R71         Segment Information - Reconciliation of             HTML     89K 
                Information Reported by Segment to Consolidated                  
                Amounts (Details)                                                
86: R72         Segment Information - Revenue and Long-Lived        HTML     72K 
                Assets by Geographical Areas (Details)                           
87: R73         Restructuring Costs - Narrative (Details)           HTML     57K 
88: R74         Restructuring Costs - Analysis of the Cost for      HTML    160K 
                Restructuring (Details)                                          
89: R75         Restructuring Costs - Restructuring Liability       HTML     81K 
                (Details)                                                        
90: R76         Income Taxes - Narrative (Details)                  HTML    203K 
91: R77         Income Taxes - Income (Loss) from Operations        HTML     59K 
                Before Income Taxes (Details)                                    
92: R78         Income Taxes - (Provision for) Benefit from Income  HTML     78K 
                Taxes (Details)                                                  
93: R79         Income Taxes - Effective Tax Rate Reconciliation    HTML     94K 
                (Details)                                                        
94: R80         Income Taxes - Deferred Tax Assets (Liabilities)    HTML     91K 
                (Details)                                                        
95: R81         Income Taxes - Deferred Tax Liabilities, Balance    HTML     52K 
                Sheet Classification (Details)                                   
96: R82         Income Taxes - Valuation Allowance (Details)        HTML     54K 
97: R83         Income Taxes - Unrecognized Tax Benefits (Details)  HTML     63K 
98: R84         Income Taxes - Summary of Tax Years that Remain     HTML     59K 
                Open to Tax Examination in Major Tax Jurisdictions               
                (Details)                                                        
99: R85         Fixed Assets - Components of Fixed Assets           HTML    106K 
                (Details)                                                        
100: R86         Fixed Assets - Assets Held Under Capital Leases     HTML     56K  
                (Details)                                                        
101: R87         Goodwill and Other Intangible Assets - Components   HTML     85K  
                of Goodwill (Details)                                            
102: R88         Goodwill and Other Intangible Assets -              HTML    115K  
                Finite-Lived Intangible Assets and Liabilities                   
                (Details)                                                        
103: R89         Goodwill and Other Intangible Assets - Narrative    HTML     51K  
                (Details)                                                        
104: R90         Goodwill and Other Intangible Assets - Schedule of  HTML     70K  
                Future Amortization Expense and Rent Offset                      
                (Details)                                                        
105: R91         Derivative Financial Instruments (Details)          HTML     83K  
106: R92         Debt - Schedule of Long-term Debt (Details)         HTML    103K  
107: R93         Debt - Narrative (Details)                          HTML    366K  
108: R94         Debt - Maturities Of Long Term Debt (Details)       HTML     78K  
109: R95         Debt - Interest Expense (Details)                   HTML     62K  
110: R96         Fair Value Measurements - Schedule of Assets and    HTML     74K  
                Liabilities Measured at Fair Value on Recurring                  
                Basis (Details)                                                  
111: R97         Fair Value Measurements - Fair Value Liabilities    HTML     56K  
                Measured Using Significant Unobservable Inputs                   
                Level 3 (Details)                                                
112: R98         Fair Value Measurements - Narrative (Details)       HTML     44K  
113: R99         Fair Value Measurements - Schedule of Liabilities   HTML     52K  
                Whose Carrying Values Differ From the Fair Value                 
                and are Not Measured on a Recurring Basis                        
                (Details)                                                        
114: R100        Retirement Benefits - Narrative (Details)           HTML     95K  
115: R101        Retirement Benefits - Change in Benefit Obligation  HTML    158K  
                and Plan Assets (Details)                                        
116: R102        Retirement Benefits - Amounts Recognized in Other   HTML     63K  
                Comprehensive Income (Loss) (Details)                            
117: R103        Retirement Benefits - Benefit Obligation In Excess  HTML     56K  
                Of Plan Assets (Details)                                         
118: R104        Retirement Benefits - Accumulated Benefit           HTML     61K  
                Obligation In Excess of Plan Assets (Details)                    
119: R105        Retirement Benefits - Net Periodic Benefit Cost     HTML    128K  
                (Details)                                                        
120: R106        Retirement Benefits - Amounts in AOCI to be         HTML     57K  
                Recognized Next Fiscal Year (Details)                            
121: R107        Retirement Benefits - Assumptions Used (Details)    HTML     88K  
122: R108        Retirement Benefits - Allocation of Plan Assets     HTML    106K  
                (Details)                                                        
123: R109        Retirement Benefits - Fair Value (Details)          HTML    239K  
124: R110        Retirement Benefits - Fair Value Reconciliation     HTML     56K  
                (Details)                                                        
125: R111        Retirement Benefits - Significant Unobservable      HTML     52K  
                Input Reconciliation (Details)                                   
126: R112        Retirement Benefits - Projected Benefit Obligation  HTML     61K  
                (Details)                                                        
127: R113        Retirement Benefits - Expected Benefit Payments     HTML     75K  
                (Details)                                                        
128: R114        Commitments and Contingencies - Narrative           HTML    256K  
                (Details)                                                        
129: R115        Commitments and Contingencies - Future Minimum      HTML     90K  
                Rental Commitments Under all Non-Cancellable                     
                Operating Lease Agreements (Details)                             
130: R116        Supplementary Information for Certain Balance       HTML     61K  
                Sheet Accounts - Prepaid and Other Current Assets                
                (Details)                                                        
131: R117        Supplementary Information for Certain Balance       HTML     62K  
                Sheet Accounts - Other non - Current Assets                      
                (Details)                                                        
132: R118        Supplementary Information for Certain Balance       HTML     58K  
                Sheet Accounts - Deferred Revenue and Accrued                    
                Expenses (Details)                                               
133: R119        Supplementary Information for Certain Balance       HTML     64K  
                Sheet Accounts - Other Current Liabilities                       
                (Details)                                                        
134: R120        Supplementary Information for Certain Balance       HTML     50K  
                Sheet Accounts - Provision For Liabilities                       
                (Details)                                                        
135: R121        Supplementary Information for Certain Balance       HTML     59K  
                Sheet Accounts - Other Non-current Liabilities                   
                (Details)                                                        
136: R122        Other Income, Net (Details)                         HTML     61K  
137: R123        Accumulated Other Comprehensive Loss - Components   HTML     69K  
                of Other Comprehensive (Loss) Income (Details)                   
138: R124        Accumulated Other Comprehensive Loss - Schedule of  HTML     79K  
                Accumulated Other Comprehensive Income (Loss)                    
                (Details)                                                        
139: R125        Share-Based Compensation - Narrative (Details)      HTML    136K  
140: R126        Share-Based Compensation - Assumptions (Details)    HTML     59K  
141: R127        Share-Based Compensation - Options Activity         HTML    113K  
                (Details)                                                        
142: R128        Share-Based Compensation - Nonvested Restricted     HTML     78K  
                Stock Units and Performance Based Stock Units                    
                Activity (Details)                                               
143: R129        Earnings Per Share - Narrative (Details)            HTML     63K  
144: R130        Earnings Per Share - Basic and Diluted Earnings     HTML     73K  
                Per Share (Details)                                              
145: R131        Supplemental Disclosures of Cash Flow Information   HTML     56K  
                (Details)                                                        
146: R132        Quarterly Financial Data (Unaudited) (Details)      HTML     77K  
147: R133        Financial Information for Issuers and Other         HTML     73K  
                Guarantor Subsidiaries - Narrative (Details)                     
148: R134        Financial Information for Issuers and Other         HTML    222K  
                Guarantor Subsidiaries - Condensed Consolidating                 
                Statement of Comprehensive Income (Details)                      
149: R135        Financial Information for Issuers and Other         HTML    292K  
                Guarantor Subsidiaries - Condensed Consolidating                 
                Balance Sheet (Details)                                          
150: R136        Financial Information for Issuers and Other         HTML    192K  
                Guarantor Subsidiaries - Condensed Consolidating                 
                Statement of Cash Flows (Details)                                
152: XML         IDEA XML File -- Filing Summary                      XML    300K  
151: EXCEL       IDEA Workbook of Financial Reports                  XLSX    261K  
 9: EX-101.INS  XBRL Instance -- wltw-20181231                       XML  22.28M 
11: EX-101.CAL  XBRL Calculations -- wltw-20181231_cal               XML    413K 
12: EX-101.DEF  XBRL Definitions -- wltw-20181231_def                XML   1.77M 
13: EX-101.LAB  XBRL Labels -- wltw-20181231_lab                     XML   2.81M 
14: EX-101.PRE  XBRL Presentations -- wltw-20181231_pre              XML   2.60M 
10: EX-101.SCH  XBRL Schema -- wltw-20181231                         XSD    424K 
153: ZIP         XBRL Zipped Folder -- 0001564590-19-004912-xbrl      Zip    680K

‘EX-101.PRE’   —   XBRL Presentations — wltw-20181231_pre

This Exhibit is an XBRL XML File.

                                                                                                                                                                                
<?xml version="1.0" standalone="yes" encoding="windows-1252"?>
<!-- DFS ActiveDisclosure(SM) XBRL Linkbase Document - http://www.dfsco.com/financial-services/ -->
<!-- Creation Date : 2019-02-27T14:50:00.5352768+00:00 -->
<!-- Version : 3.3.6989.14284 -->
<!-- Package ID : f3e1b8e0bb8148329e33f87c688ed998 -->
<!-- Copyright (c) 2019 Donnelley Financial, LLC. All Rights Reserved. -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
<roleRef roleURI="http://www.willistowerswatson.com/20181231/role/TemplateLink" xlink:href="wltw-20181231.xsd#TemplateLink" xlink:type="simple"/>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DocumentDocumentAndEntityInformation" xlink:href="wltw-20181231.xsd#Role_DocumentDocumentAndEntityInformation" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DocumentDocumentAndEntityInformation">
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityPublicFloat" xlink:type="locator" xlink:label="dei_EntityPublicFloat"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:type="locator" xlink:label="dei_EntityCurrentReportingStatus"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityVoluntaryFilers" xlink:type="locator" xlink:label="dei_EntityVoluntaryFilers"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:type="locator" xlink:label="dei_EntityWellKnownSeasonedIssuer"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:type="locator" xlink:label="dei_EntityCommonStockSharesOutstanding"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityShellCompany" xlink:type="locator" xlink:label="dei_EntityShellCompany"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntitySmallBusiness" xlink:type="locator" xlink:label="dei_EntitySmallBusiness"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:type="locator" xlink:label="dei_DocumentFiscalPeriodFocus"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:type="locator" xlink:label="dei_DocumentFiscalYearFocus"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentType" xlink:type="locator" xlink:label="dei_DocumentType"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityFilerCategory" xlink:type="locator" xlink:label="dei_EntityFilerCategory"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:type="locator" xlink:label="dei_CurrentFiscalYearEndDate"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DocumentAndEntityInformationAbstract" xlink:type="locator" xlink:label="wltw_DocumentAndEntityInformationAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_EntityRegistrantName" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_EntityCentralIndexKey" order="10070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_TradingSymbol" order="10130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_CurrentFiscalYearEndDate" order="10190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_EntityFilerCategory" order="10250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_DocumentType" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_DocumentPeriodEndDate" order="10370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_DocumentFiscalYearFocus" order="10430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_DocumentFiscalPeriodFocus" order="10490.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_AmendmentFlag" order="10550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_EntitySmallBusiness" order="10610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_EntityEmergingGrowthCompany" order="10670.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_EntityShellCompany" order="10730.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_EntityCommonStockSharesOutstanding" order="10790.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_EntityWellKnownSeasonedIssuer" order="10850.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_EntityVoluntaryFilers" order="10910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_EntityCurrentReportingStatus" order="10970.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DocumentAndEntityInformationAbstract" xlink:to="dei_EntityPublicFloat" order="11030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncome" xlink:href="wltw-20181231.xsd#Role_StatementConsolidatedStatementsOfComprehensiveIncome" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/StatementConsolidatedStatementsOfComprehensiveIncome">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:type="locator" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:type="locator" xlink:label="us-gaap_ProfitLoss_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareDiluted"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareBasic"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:type="locator" xlink:label="us-gaap_NetIncomeLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:type="locator" xlink:label="us-gaap_ProfitLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_IncomeTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:type="locator" xlink:label="us-gaap_OtherNonoperatingIncomeExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestExpense" xlink:type="locator" xlink:label="us-gaap_InterestExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:type="locator" xlink:label="us-gaap_OperatingIncomeLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostsAndExpenses" xlink:type="locator" xlink:label="us-gaap_CostsAndExpenses"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationIntegrationRelatedCosts" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationIntegrationRelatedCosts"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringCharges" xlink:type="locator" xlink:label="us-gaap_RestructuringCharges"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:type="locator" xlink:label="us-gaap_AmortizationOfIntangibleAssets"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DepreciationNotIncludingIntegrationComponent" xlink:type="locator" xlink:label="wltw_DepreciationNotIncludingIntegrationComponent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherCostAndExpenseOperating" xlink:type="locator" xlink:label="us-gaap_OtherCostAndExpenseOperating"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LaborAndRelatedExpense" xlink:type="locator" xlink:label="us-gaap_LaborAndRelatedExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostsAndExpensesAbstract" xlink:type="locator" xlink:label="us-gaap_CostsAndExpensesAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:type="locator" xlink:label="us-gaap_Revenues"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeStatementAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_Revenues" order="10250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_CostsAndExpensesAbstract" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CostsAndExpensesAbstract" xlink:to="us-gaap_LaborAndRelatedExpense" order="10430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CostsAndExpensesAbstract" xlink:to="us-gaap_OtherCostAndExpenseOperating" order="10490.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CostsAndExpensesAbstract" xlink:to="wltw_DepreciationNotIncludingIntegrationComponent" order="10550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CostsAndExpensesAbstract" xlink:to="us-gaap_AmortizationOfIntangibleAssets" order="10610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CostsAndExpensesAbstract" xlink:to="us-gaap_RestructuringCharges" order="10670.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CostsAndExpensesAbstract" xlink:to="us-gaap_BusinessCombinationIntegrationRelatedCosts" order="10730.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CostsAndExpensesAbstract" xlink:to="us-gaap_CostsAndExpenses" order="10790.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_OperatingIncomeLoss" order="10850.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_InterestExpense" order="10910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_OtherNonoperatingIncomeExpense" order="10970.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" order="11030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeTaxExpenseBenefit" order="11090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_ProfitLoss" order="11150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" order="11210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_NetIncomeLoss" order="11270.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_EarningsPerShareAbstract" order="11330.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_EarningsPerShareBasic" order="11450.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_EarningsPerShareDiluted" order="11510.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_ProfitLoss_li0l2" order="11570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" order="11630.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:to="us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" order="11750.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:to="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax" order="11810.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:to="us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax" order="11870.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTax" order="11930.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" order="11990.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest" order="12050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_ComprehensiveIncomeNetOfTax" order="12110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/StatementConsolidatedBalanceSheets" xlink:href="wltw-20181231.xsd#Role_StatementConsolidatedBalanceSheets" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/StatementConsolidatedBalanceSheets">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:type="locator" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MinorityInterest" xlink:type="locator" xlink:label="us-gaap_MinorityInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:type="locator" xlink:label="us-gaap_StockholdersEquity"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockValue" xlink:type="locator" xlink:label="us-gaap_TreasuryStockValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:type="locator" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:type="locator" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount" xlink:type="locator" xlink:label="us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:type="locator" xlink:label="us-gaap_CommitmentsAndContingencies"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Liabilities" xlink:type="locator" xlink:label="us-gaap_Liabilities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_LiabilitiesNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherLiabilitiesNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationReserveNoncurrent" xlink:type="locator" xlink:label="us-gaap_LitigationReserveNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilitiesGrossNoncurrent" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesGrossNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:type="locator" xlink:label="us-gaap_LongTermDebtNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_LiabilitiesCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_OtherLiabilitiesCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtCurrent" xlink:type="locator" xlink:label="us-gaap_DebtCurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DeferredRevenueAndAccruedLiabilitiesCurrent" xlink:type="locator" xlink:label="wltw_DeferredRevenueAndAccruedLiabilitiesCurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_FiduciaryLiabilitiesCurrent" xlink:type="locator" xlink:label="wltw_FiduciaryLiabilitiesCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Assets" xlink:type="locator" xlink:label="us-gaap_Assets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_AssetsNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherAssetsNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:type="locator" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:type="locator" xlink:label="us-gaap_Goodwill"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsCurrent" xlink:type="locator" xlink:label="us-gaap_AssetsCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:type="locator" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:type="locator" xlink:label="us-gaap_AccountsReceivableNetCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FundsHeldForClients" xlink:type="locator" xlink:label="us-gaap_FundsHeldForClients"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsAbstract" xlink:type="locator" xlink:label="us-gaap_AssetsAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:type="locator" xlink:label="us-gaap_StatementOfFinancialPositionAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementOfFinancialPositionAbstract" xlink:to="us-gaap_AssetsAbstract" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue" order="10430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_FundsHeldForClients" order="10470.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AccountsReceivableNetCurrent" order="10510.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_PrepaidExpenseAndOtherAssetsCurrent" order="10550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsCurrent" order="10590.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_PropertyPlantAndEquipmentNet" order="10630.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_Goodwill" order="10670.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_IntangibleAssetsNetExcludingGoodwill" order="10710.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent" order="10750.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_OtherAssetsNoncurrent" order="10790.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_AssetsNoncurrent" order="10830.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AssetsAbstract" xlink:to="us-gaap_Assets" order="10870.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementOfFinancialPositionAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract" order="10910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="wltw_FiduciaryLiabilitiesCurrent" order="10990.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="wltw_DeferredRevenueAndAccruedLiabilitiesCurrent" order="11030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_DebtCurrent" order="11070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_OtherLiabilitiesCurrent" order="11110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesCurrent" order="11150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LongTermDebtNoncurrent" order="11190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" order="11230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_DeferredTaxLiabilitiesGrossNoncurrent" order="11270.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LitigationReserveNoncurrent" order="11310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_OtherLiabilitiesNoncurrent" order="11350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesNoncurrent" order="11390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_Liabilities" order="11430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_CommitmentsAndContingencies" order="11470.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount" order="11510.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" order="11550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:to="us-gaap_AdditionalPaidInCapitalCommonStock" order="11630.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit" order="11670.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" order="11710.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:to="us-gaap_TreasuryStockValue" order="11750.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:to="us-gaap_StockholdersEquity" order="11790.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:to="us-gaap_MinorityInterest" order="11830.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" order="11870.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity" order="11910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/StatementConsolidatedBalanceSheetsParenthetical" xlink:href="wltw-20181231.xsd#Role_StatementConsolidatedBalanceSheetsParenthetical" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/StatementConsolidatedBalanceSheetsParenthetical">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockShares" xlink:type="locator" xlink:label="us-gaap_TreasuryStockShares"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:type="locator" xlink:label="us-gaap_PreferredStockSharesIssued"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:type="locator" xlink:label="us-gaap_PreferredStockSharesAuthorized"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:type="locator" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:type="locator" xlink:label="us-gaap_CommonStockSharesOutstanding"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:type="locator" xlink:label="us-gaap_CommonStockSharesIssued"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:type="locator" xlink:label="us-gaap_CommonStockSharesAuthorized"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:type="locator" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementLineItems" xlink:type="locator" xlink:label="us-gaap_StatementLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OrdinaryShareTwoMember" xlink:type="locator" xlink:label="wltw_OrdinaryShareTwoMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OrdinaryShareOneMember" xlink:type="locator" xlink:label="wltw_OrdinaryShareOneMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:type="locator" xlink:label="us-gaap_ClassOfStockDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:type="locator" xlink:label="us-gaap_StatementClassOfStockAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementTable" xlink:type="locator" xlink:label="us-gaap_StatementTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:type="locator" xlink:label="us-gaap_StatementOfFinancialPositionAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementOfFinancialPositionAbstract" xlink:to="us-gaap_StatementTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementClassOfStockAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_ClassOfStockDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="wltw_OrdinaryShareOneMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="wltw_OrdinaryShareTwoMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementLineItems" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_CommonStockSharesAuthorized" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_CommonStockSharesIssued" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_CommonStockSharesOutstanding" order="10530.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_PreferredStockParOrStatedValuePerShare" order="10650.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_PreferredStockSharesAuthorized" order="10770.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_PreferredStockSharesIssued" order="10890.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_TreasuryStockShares" order="11010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/StatementConsolidatedStatementsOfCashFlows" xlink:href="wltw-20181231.xsd#Role_StatementConsolidatedStatementsOfCashFlows" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/StatementConsolidatedStatementsOfCashFlows">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:type="locator" xlink:label="us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromPaymentsToMinorityShareholders" xlink:type="locator" xlink:label="us-gaap_ProceedsFromPaymentsToMinorityShareholders"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:type="locator" xlink:label="us-gaap_PaymentsOfDividendsCommonStock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:type="locator" xlink:label="us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PaymentsForDeferredContingentConsiderationFinancingActivities" xlink:type="locator" xlink:label="wltw_PaymentsForDeferredContingentConsiderationFinancingActivities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForRepurchaseOfEquity" xlink:type="locator" xlink:label="us-gaap_PaymentsForRepurchaseOfEquity"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:type="locator" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:type="locator" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:type="locator" xlink:label="us-gaap_RepaymentsOfLongTermDebt"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsOfDebtIssuanceCosts" xlink:type="locator" xlink:label="us-gaap_PaymentsOfDebtIssuanceCosts"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt" xlink:type="locator" xlink:label="us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt" xlink:type="locator" xlink:label="us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfLinesOfCredit" xlink:type="locator" xlink:label="us-gaap_ProceedsFromRepaymentsOfLinesOfCredit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:type="locator" xlink:label="us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested" xlink:type="locator" xlink:label="us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:type="locator" xlink:label="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToDevelopSoftware" xlink:type="locator" xlink:label="us-gaap_PaymentsToDevelopSoftware"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquireProductiveAssets" xlink:type="locator" xlink:label="us-gaap_PaymentsToAcquireProductiveAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
<loc xlink:href="wltw-20181231.xsd#wltw_IncreaseDecreaseInLitigationLiability" xlink:type="locator" xlink:label="wltw_IncreaseDecreaseInLitigationLiability"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
<loc xlink:href="wltw-20181231.xsd#wltw_IncreaseDecreaseInFiduciaryLiabilities" xlink:type="locator" xlink:label="wltw_IncreaseDecreaseInFiduciaryLiabilities"/>
<loc xlink:href="wltw-20181231.xsd#wltw_IncreaseDecreaseInFiduciaryAssets" xlink:type="locator" xlink:label="wltw_IncreaseDecreaseInFiduciaryAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNoncashIncomeExpense" xlink:type="locator" xlink:label="us-gaap_OtherNoncashIncomeExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainLossOnSaleOfBusiness" xlink:type="locator" xlink:label="us-gaap_GainLossOnSaleOfBusiness"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:type="locator" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossBeforeTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:type="locator" xlink:label="us-gaap_ProvisionForDoubtfulAccounts"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash" xlink:type="locator" xlink:label="us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:type="locator" xlink:label="us-gaap_AmortizationOfIntangibleAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Depreciation" xlink:type="locator" xlink:label="us-gaap_Depreciation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:type="locator" xlink:label="us-gaap_ProfitLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:type="locator" xlink:label="us-gaap_StatementOfCashFlowsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" order="10400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_ProfitLoss" order="10520.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" order="10580.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_Depreciation" order="10700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AmortizationOfIntangibleAssets" order="10760.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash" order="10820.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_ProvisionForDoubtfulAccounts" order="10880.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_DeferredIncomeTaxExpenseBenefit" order="10940.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_ShareBasedCompensation" order="11000.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" order="11060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_GainLossOnSaleOfBusiness" order="11120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_OtherNoncashIncomeExpense" order="11180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" order="11240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInAccountsReceivable" order="11360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="wltw_IncreaseDecreaseInFiduciaryAssets" order="11420.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="wltw_IncreaseDecreaseInFiduciaryLiabilities" order="11480.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingAssets" order="11540.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" order="11600.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="wltw_IncreaseDecreaseInLitigationLiability" order="11660.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities" order="11720.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" order="11780.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_PaymentsToAcquireProductiveAssets" order="11900.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_PaymentsToDevelopSoftware" order="11960.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" order="12020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested" order="12080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_PaymentsForProceedsFromOtherInvestingActivities" order="12140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities" order="12200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" order="12260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_ProceedsFromRepaymentsOfLinesOfCredit" order="12380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt" order="12440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt" order="12500.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_PaymentsOfDebtIssuanceCosts" order="12560.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_RepaymentsOfLongTermDebt" order="12620.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_PaymentsForRepurchaseOfCommonStock" order="12680.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock" order="12740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_PaymentsForRepurchaseOfEquity" order="12800.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="wltw_PaymentsForDeferredContingentConsiderationFinancingActivities" order="12860.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" order="12920.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_PaymentsOfDividendsCommonStock" order="12980.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_ProceedsFromPaymentsToMinorityShareholders" order="13040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities" order="13100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" order="13160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" order="13220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue" order="13280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_li0l2" order="13340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/StatementConsolidatedStatementsOfChangesInEquity" xlink:href="wltw-20181231.xsd#Role_StatementConsolidatedStatementsOfChangesInEquity" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/StatementConsolidatedStatementsOfChangesInEquity">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:type="locator" xlink:label="us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests" xlink:type="locator" xlink:label="us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharesOutstanding" xlink:type="locator" xlink:label="us-gaap_SharesOutstanding_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_li0l2"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AdjustmentsToAdditionalPaidInCapitalForeignCurrencyTranslationGainLoss" xlink:type="locator" xlink:label="wltw_AdjustmentsToAdditionalPaidInCapitalForeignCurrencyTranslationGainLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MinorityInterestDecreaseFromRedemptions" xlink:type="locator" xlink:label="us-gaap_MinorityInterestDecreaseFromRedemptions"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination" xlink:type="locator" xlink:label="us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:type="locator" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationAcquisitionAwardReplacementValue" xlink:type="locator" xlink:label="wltw_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationAcquisitionAwardReplacementValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesAcquisitions" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodSharesAcquisitions"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueAcquisitions" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodValueAcquisitions"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNonControllingInterest" xlink:type="locator" xlink:label="wltw_OtherComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNonControllingInterest"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNonredeemableNoncontrollingInterest" xlink:type="locator" xlink:label="wltw_OtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNonredeemableNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendsCommonStock" xlink:type="locator" xlink:label="us-gaap_DividendsCommonStock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:type="locator" xlink:label="us-gaap_ProfitLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityOtherShares" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityOtherShares"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityOther" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityOther"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares" xlink:type="locator" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:type="locator" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" xlink:type="locator" xlink:label="us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests" xlink:type="locator" xlink:label="us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharesOutstanding" xlink:type="locator" xlink:label="us-gaap_SharesOutstanding"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:type="locator" xlink:label="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementLineItems" xlink:type="locator" xlink:label="us-gaap_StatementLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201616Member" xlink:type="locator" xlink:label="us-gaap_AccountingStandardsUpdate201616Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:type="locator" xlink:label="us-gaap_AccountingStandardsUpdate201409Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:type="locator" xlink:label="us-gaap_TypeOfAdoptionMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:type="locator" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_RedeemableNoncontrollingInterestMember" xlink:type="locator" xlink:label="wltw_RedeemableNoncontrollingInterestMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:type="locator" xlink:label="us-gaap_NoncontrollingInterestMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ParentMember" xlink:type="locator" xlink:label="us-gaap_ParentMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember" xlink:type="locator" xlink:label="us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TreasuryStockMember" xlink:type="locator" xlink:label="us-gaap_TreasuryStockMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:type="locator" xlink:label="us-gaap_RetainedEarningsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember" xlink:type="locator" xlink:label="us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockMember" xlink:type="locator" xlink:label="us-gaap_CommonStockMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:type="locator" xlink:label="us-gaap_EquityComponentDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementEquityComponentsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementTable" xlink:type="locator" xlink:label="us-gaap_StatementTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementOfStockholdersEquityAbstract" xlink:to="us-gaap_StatementTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementEquityComponentsAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementEquityComponentsAxis" xlink:to="us-gaap_EquityComponentDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_CommonStockMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_CommonStockIncludingAdditionalPaidInCapitalMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_RetainedEarningsMember" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_TreasuryStockMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_AociIncludingPortionAttributableToNoncontrollingInterestMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_ParentMember" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_NoncontrollingInterestMember" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="wltw_RedeemableNoncontrollingInterestMember" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:to="us-gaap_TypeOfAdoptionMember" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TypeOfAdoptionMember" xlink:to="us-gaap_AccountingStandardsUpdate201409Member" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TypeOfAdoptionMember" xlink:to="us-gaap_AccountingStandardsUpdate201616Member" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementLineItems" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementLineItems" xlink:to="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" order="10390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" order="10830.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_SharesOutstanding" order="10850.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests" order="11010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption" order="11050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" order="11490.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares" order="11510.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_StockholdersEquityOther" order="11710.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_StockholdersEquityOtherShares" order="11730.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest" order="11930.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest" order="12110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_ProfitLoss" order="12130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/positiveTerseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_DividendsCommonStock" order="12150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="wltw_OtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNonredeemableNoncontrollingInterest" order="12370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="wltw_OtherComprehensiveIncomeLossNetOfTaxAttributableToRedeemableNonControllingInterest" order="12550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTax" order="12570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation" order="12590.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation" order="12610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_StockIssuedDuringPeriodValueAcquisitions" order="12810.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_StockIssuedDuringPeriodSharesAcquisitions" order="12830.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="wltw_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationAcquisitionAwardReplacementValue" order="13030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" order="13250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_NoncontrollingInterestIncreaseFromBusinessCombination" order="13470.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_MinorityInterestDecreaseFromRedemptions" order="13690.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="wltw_AdjustmentsToAdditionalPaidInCapitalForeignCurrencyTranslationGainLoss" order="13910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_li0l2" order="14130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_SharesOutstanding_li0l2" order="14150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests_li0l2" order="14310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:to="us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption_li0l2" order="14350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/StatementConsolidatedStatementsOfChangesInEquityParenthetical" xlink:href="wltw-20181231.xsd#Role_StatementConsolidatedStatementsOfChangesInEquityParenthetical" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/StatementConsolidatedStatementsOfChangesInEquityParenthetical">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:type="locator" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementOfStockholdersEquityAbstract" xlink:to="us-gaap_CommonStockDividendsPerShareDeclared" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureNatureOfOperations" xlink:href="wltw-20181231.xsd#Role_DisclosureNatureOfOperations" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureNatureOfOperations">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NatureOfOperations" xlink:type="locator" xlink:label="us-gaap_NatureOfOperations"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:type="locator" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_NatureOfOperations" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncements" xlink:href="wltw-20181231.xsd#Role_DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncements" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncements">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock" xlink:type="locator" xlink:label="us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:type="locator" xlink:label="us-gaap_AccountingPoliciesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_BasisOfPresentationAndSignificantAccountingPoliciesTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureMergerAcquisitionsAndDivestitures" xlink:href="wltw-20181231.xsd#Role_DisclosureMergerAcquisitionsAndDivestitures" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureMergerAcquisitionsAndDivestitures">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MergersAcquisitionsAndDispositionsDisclosuresTextBlock" xlink:type="locator" xlink:label="us-gaap_MergersAcquisitionsAndDispositionsDisclosuresTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessCombinationsAbstract" xlink:to="us-gaap_MergersAcquisitionsAndDispositionsDisclosuresTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenue" xlink:href="wltw-20181231.xsd#Role_DisclosureRevenue" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenue">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerTextBlock" xlink:type="locator" xlink:label="us-gaap_RevenueFromContractWithCustomerTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerAbstract" xlink:type="locator" xlink:label="us-gaap_RevenueFromContractWithCustomerAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RevenueFromContractWithCustomerAbstract" xlink:to="us-gaap_RevenueFromContractWithCustomerTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSegmentInformation" xlink:href="wltw-20181231.xsd#Role_DisclosureSegmentInformation" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSegmentInformation">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:type="locator" xlink:label="us-gaap_SegmentReportingAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingAbstract" xlink:to="us-gaap_SegmentReportingDisclosureTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRestructuringCosts" xlink:href="wltw-20181231.xsd#Role_DisclosureRestructuringCosts" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRestructuringCosts">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringAndRelatedActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_RestructuringAndRelatedActivitiesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringAndRelatedActivitiesAbstract" xlink:to="us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxes" xlink:href="wltw-20181231.xsd#Role_DisclosureIncomeTaxes" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxes">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeTaxDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxDisclosureTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFixedAssets" xlink:href="wltw-20181231.xsd#Role_DisclosureFixedAssets" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFixedAssets">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentAbstract" xlink:to="us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssets" xlink:href="wltw-20181231.xsd#Role_DisclosureGoodwillAndOtherIntangibleAssets" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssets">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:to="us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDerivativeFinancialInstruments" xlink:href="wltw-20181231.xsd#Role_DisclosureDerivativeFinancialInstruments" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDerivativeFinancialInstruments">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:to="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDebt" xlink:href="wltw-20181231.xsd#Role_DisclosureDebt" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDebt">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_DebtDisclosureTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_DebtDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_DebtDisclosureTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFairValueMeasurements" xlink:href="wltw-20181231.xsd#Role_DisclosureFairValueMeasurements" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFairValueMeasurements">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosuresTextBlock" xlink:type="locator" xlink:label="us-gaap_FairValueDisclosuresTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:type="locator" xlink:label="us-gaap_FairValueDisclosuresAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueDisclosuresAbstract" xlink:to="us-gaap_FairValueDisclosuresTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefits" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefits" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefits">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureCommitmentsAndContingencies" xlink:href="wltw-20181231.xsd#Role_DisclosureCommitmentsAndContingencies" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureCommitmentsAndContingencies">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsSupplementaryInformationForCertainBalanceSheetAccountsNotes" xlink:href="wltw-20181231.xsd#Role_DisclosureSupplementaryInformationForCertainBalanceSheetAccountsSupplementaryInformationForCertainBalanceSheetAccountsNotes" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsSupplementaryInformationForCertainBalanceSheetAccountsNotes">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SupplementalBalanceSheetDisclosuresTextBlock" xlink:type="locator" xlink:label="us-gaap_SupplementalBalanceSheetDisclosuresTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:type="locator" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_SupplementalBalanceSheetDisclosuresTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureOtherIncomeNet" xlink:href="wltw-20181231.xsd#Role_DisclosureOtherIncomeNet" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureOtherIncomeNet">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherIncomeAndExpensesAbstract" xlink:type="locator" xlink:label="us-gaap_OtherIncomeAndExpensesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OtherIncomeAndExpensesAbstract" xlink:to="us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLoss" xlink:href="wltw-20181231.xsd#Role_DisclosureAccumulatedOtherComprehensiveLoss" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLoss">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomeNoteTextBlock" xlink:type="locator" xlink:label="us-gaap_ComprehensiveIncomeNoteTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityAbstract" xlink:type="locator" xlink:label="us-gaap_EquityAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityAbstract" xlink:to="us-gaap_ComprehensiveIncomeNoteTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureShareBasedCompensation" xlink:href="wltw-20181231.xsd#Role_DisclosureShareBasedCompensation" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureShareBasedCompensation">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:type="locator" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:type="locator" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:to="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureEarningsPerShare" xlink:href="wltw-20181231.xsd#Role_DisclosureEarningsPerShare" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureEarningsPerShare">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareTextBlock" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_EarningsPerShareTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementalDisclosuresOfCashFlowInformation" xlink:href="wltw-20181231.xsd#Role_DisclosureSupplementalDisclosuresOfCashFlowInformation" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementalDisclosuresOfCashFlowInformation">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashFlowSupplementalDisclosuresTextBlock" xlink:type="locator" xlink:label="us-gaap_CashFlowSupplementalDisclosuresTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SupplementalCashFlowElementsAbstract" xlink:type="locator" xlink:label="us-gaap_SupplementalCashFlowElementsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SupplementalCashFlowElementsAbstract" xlink:to="us-gaap_CashFlowSupplementalDisclosuresTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureQuarterlyFinancialDataUnaudited" xlink:href="wltw-20181231.xsd#Role_DisclosureQuarterlyFinancialDataUnaudited" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureQuarterlyFinancialDataUnaudited">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_QuarterlyFinancialInformationTextBlock" xlink:type="locator" xlink:label="us-gaap_QuarterlyFinancialInformationTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_QuarterlyFinancialInformationDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_QuarterlyFinancialInformationDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_QuarterlyFinancialInformationDisclosureAbstract" xlink:to="us-gaap_QuarterlyFinancialInformationTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiaries" xlink:href="wltw-20181231.xsd#Role_DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiaries" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiaries">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock" xlink:type="locator" xlink:label="us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:type="locator" xlink:label="srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:to="us-gaap_CondensedFinancialInformationOfParentCompanyOnlyDisclosureTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncementsPolicies" xlink:href="wltw-20181231.xsd#Role_DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncementsPolicies" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncementsPolicies">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_RevenueFromContractWithCustomerPolicyTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementPlansPensionsPolicy" xlink:type="locator" xlink:label="us-gaap_PensionAndOtherPostretirementPlansPensionsPolicy"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LesseeLeasesPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_LesseeLeasesPolicyTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_CommitmentsAndContingenciesPolicyTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativesPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_DerivativesPolicyTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_IncomeTaxPolicyTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TradeAndOtherAccountsReceivablePolicy" xlink:type="locator" xlink:label="us-gaap_TradeAndOtherAccountsReceivablePolicy"/>
<loc xlink:href="wltw-20181231.xsd#wltw_FiduciaryAssetsAndFiduciaryLiabilitiesPolicyTextBlock" xlink:type="locator" xlink:label="wltw_FiduciaryAssetsAndFiduciaryLiabilitiesPolicyTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentsPolicy" xlink:type="locator" xlink:label="us-gaap_EquityMethodInvestmentsPolicy"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueOfFinancialInstrumentsPolicy" xlink:type="locator" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy"/>
<loc xlink:href="wltw-20181231.xsd#wltw_GoingConcernPolicyTextBlock" xlink:type="locator" xlink:label="wltw_GoingConcernPolicyTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UseOfEstimates" xlink:type="locator" xlink:label="us-gaap_UseOfEstimates"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ConsolidationPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_ConsolidationPolicyTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:type="locator" xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:type="locator" xlink:label="us-gaap_AccountingPoliciesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_BasisOfAccountingPolicyPolicyTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_ConsolidationPolicyTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_UseOfEstimates" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="wltw_GoingConcernPolicyTextBlock" order="10070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_FairValueOfFinancialInstrumentsPolicy" order="10090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_EquityMethodInvestmentsPolicy" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_CashAndCashEquivalentsPolicyTextBlock" order="10150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="wltw_FiduciaryAssetsAndFiduciaryLiabilitiesPolicyTextBlock" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_TradeAndOtherAccountsReceivablePolicy" order="10190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_IncomeTaxPolicyTextBlock" order="10210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_DerivativesPolicyTextBlock" order="10250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_CommitmentsAndContingenciesPolicyTextBlock" order="10270.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_LesseeLeasesPolicyTextBlock" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock" order="10370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_PensionAndOtherPostretirementPlansPensionsPolicy" order="10390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_RevenueFromContractWithCustomerPolicyTextBlock" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" order="10430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncementsTables" xlink:href="wltw-20181231.xsd#Role_DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncementsTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncementsTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:type="locator" xlink:label="us-gaap_AccountingPoliciesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureMergerAcquisitionsAndDivestituresTables" xlink:href="wltw-20181231.xsd#Role_DisclosureMergerAcquisitionsAndDivestituresTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureMergerAcquisitionsAndDivestituresTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessCombinationsAbstract" xlink:to="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueTables" xlink:href="wltw-20181231.xsd#Role_DisclosureRevenueTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalizedContractCostTableTextBlock" xlink:type="locator" xlink:label="us-gaap_CapitalizedContractCostTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTableTextBlock" xlink:type="locator" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisaggregationOfRevenueTableTextBlock" xlink:type="locator" xlink:label="us-gaap_DisaggregationOfRevenueTableTextBlock"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ScheduleOfEffectOfASC606OnFinancialStatementsTableTextBlock" xlink:type="locator" xlink:label="wltw_ScheduleOfEffectOfASC606OnFinancialStatementsTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerAbstract" xlink:type="locator" xlink:label="us-gaap_RevenueFromContractWithCustomerAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RevenueFromContractWithCustomerAbstract" xlink:to="wltw_ScheduleOfEffectOfASC606OnFinancialStatementsTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RevenueFromContractWithCustomerAbstract" xlink:to="us-gaap_DisaggregationOfRevenueTableTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RevenueFromContractWithCustomerAbstract" xlink:to="us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RevenueFromContractWithCustomerAbstract" xlink:to="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" order="10070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RevenueFromContractWithCustomerAbstract" xlink:to="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTableTextBlock" order="10090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RevenueFromContractWithCustomerAbstract" xlink:to="us-gaap_CapitalizedContractCostTableTextBlock" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSegmentInformationTables" xlink:href="wltw-20181231.xsd#Role_DisclosureSegmentInformationTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSegmentInformationTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock" xlink:type="locator" xlink:label="us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:type="locator" xlink:label="us-gaap_SegmentReportingAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingAbstract" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingAbstract" xlink:to="us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingAbstract" xlink:to="us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRestructuringCostsTables" xlink:href="wltw-20181231.xsd#Role_DisclosureRestructuringCostsTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRestructuringCostsTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringAndRelatedActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_RestructuringAndRelatedActivitiesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringAndRelatedActivitiesAbstract" xlink:to="us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringAndRelatedActivitiesAbstract" xlink:to="us-gaap_ScheduleOfRestructuringReserveByTypeOfCostTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesTables" xlink:href="wltw-20181231.xsd#Role_DisclosureIncomeTaxesTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SummaryOfIncomeTaxExaminationsTextBlock" xlink:type="locator" xlink:label="us-gaap_SummaryOfIncomeTaxExaminationsTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SummaryOfValuationAllowanceTextBlock" xlink:type="locator" xlink:label="us-gaap_SummaryOfValuationAllowanceTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeTaxDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" order="10070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_SummaryOfValuationAllowanceTextBlock" order="10090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_ScheduleOfUnrecognizedTaxBenefitsRollForwardTableTextBlock" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_SummaryOfIncomeTaxExaminationsTextBlock" order="10130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFixedAssetsTables" xlink:href="wltw-20181231.xsd#Role_DisclosureFixedAssetsTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFixedAssetsTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfCapitalLeasedAsssetsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfCapitalLeasedAsssetsTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentAbstract" xlink:to="us-gaap_PropertyPlantAndEquipmentTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentAbstract" xlink:to="us-gaap_ScheduleOfCapitalLeasedAsssetsTableTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsTables" xlink:href="wltw-20181231.xsd#Role_DisclosureGoodwillAndOtherIntangibleAssetsTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsTables">
<loc xlink:href="wltw-20181231.xsd#wltw_ScheduleOfFiniteLivedIntangibleAssetsAndLiabilitiesFutureAmortizationExpenseTableTextBlock" xlink:type="locator" xlink:label="wltw_ScheduleOfFiniteLivedIntangibleAssetsAndLiabilitiesFutureAmortizationExpenseTableTextBlock"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ScheduleOfFiniteLivedIntangibleAssetsAndLiabilitiesTableTextBlock" xlink:type="locator" xlink:label="wltw_ScheduleOfFiniteLivedIntangibleAssetsAndLiabilitiesTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfGoodwillTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfGoodwillTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:to="us-gaap_ScheduleOfGoodwillTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:to="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:to="wltw_ScheduleOfFiniteLivedIntangibleAssetsAndLiabilitiesTableTextBlock" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:to="wltw_ScheduleOfFiniteLivedIntangibleAssetsAndLiabilitiesFutureAmortizationExpenseTableTextBlock" order="10070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDerivativeFinancialInstrumentsTables" xlink:href="wltw-20181231.xsd#Role_DisclosureDerivativeFinancialInstrumentsTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDerivativeFinancialInstrumentsTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDerivativeInstrumentsEffectOnOtherComprehensiveIncomeLossTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsEffectOnOtherComprehensiveIncomeLossTableTextBlock"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ScheduleOfDerivativeInstrumentsDesignatedAsHedgingInstrumentEffectOnOtherComprehensiveIncomeLossTableTextBlock" xlink:type="locator" xlink:label="wltw_ScheduleOfDerivativeInstrumentsDesignatedAsHedgingInstrumentEffectOnOtherComprehensiveIncomeLossTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:to="wltw_ScheduleOfDerivativeInstrumentsDesignatedAsHedgingInstrumentEffectOnOtherComprehensiveIncomeLossTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDerivativeInstrumentsEffectOnOtherComprehensiveIncomeLossTableTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDebtTables" xlink:href="wltw-20181231.xsd#Role_DisclosureDebtTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDebtTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestIncomeAndInterestExpenseDisclosureTableTextBlock" xlink:type="locator" xlink:label="us-gaap_InterestIncomeAndInterestExpenseDisclosureTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDebtTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_DebtDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDebtTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_InterestIncomeAndInterestExpenseDisclosureTableTextBlock" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFairValueMeasurementsTables" xlink:href="wltw-20181231.xsd#Role_DisclosureFairValueMeasurementsTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFairValueMeasurementsTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock" xlink:type="locator" xlink:label="us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" xlink:type="locator" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:type="locator" xlink:label="us-gaap_FairValueDisclosuresAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueDisclosuresAbstract" xlink:to="us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueDisclosuresAbstract" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueDisclosuresAbstract" xlink:to="us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsTables" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ScheduleOfProjectedPensionContributionsTableTextBlock" xlink:type="locator" xlink:label="wltw_ScheduleOfProjectedPensionContributionsTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfEffectOfSignificantUnobservableInputsChangesInPlanAssetsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfEffectOfSignificantUnobservableInputsChangesInPlanAssetsTableTextBlock"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ScheduleOfNetPlanInvestmentsReconciliationToTotalFairValueOfPlanAssetsTableTextBlock" xlink:type="locator" xlink:label="wltw_ScheduleOfNetPlanInvestmentsReconciliationToTotalFairValueOfPlanAssetsTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAssumptionsUsedTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAssumptionsUsedTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAmountsInAccumulatedOtherComprehensiveIncomeLossToBeRecognizedOverNextFiscalYearTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAmountsInAccumulatedOtherComprehensiveIncomeLossToBeRecognizedOverNextFiscalYearTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfNetBenefitCostsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfNetBenefitCostsTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfChangesInProjectedBenefitObligationsTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfAccumulatedBenefitObligationsInExcessOfFairValueOfPlanAssetsTableTextBlock" order="10070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfNetBenefitCostsTableTextBlock" order="10090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfAmountsInAccumulatedOtherComprehensiveIncomeLossToBeRecognizedOverNextFiscalYearTableTextBlock" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfAssumptionsUsedTableTextBlock" order="10130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfAllocationOfPlanAssetsTableTextBlock" order="10150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="wltw_ScheduleOfNetPlanInvestmentsReconciliationToTotalFairValueOfPlanAssetsTableTextBlock" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfEffectOfSignificantUnobservableInputsChangesInPlanAssetsTableTextBlock" order="10190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="wltw_ScheduleOfProjectedPensionContributionsTableTextBlock" order="10210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfExpectedBenefitPaymentsTableTextBlock" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureCommitmentsAndContingenciesTables" xlink:href="wltw-20181231.xsd#Role_DisclosureCommitmentsAndContingenciesTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureCommitmentsAndContingenciesTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_ScheduleOfFutureMinimumRentalPaymentsForOperatingLeasesTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsSupplementaryInformationForCertainBalanceSheetAccountsTables" xlink:href="wltw-20181231.xsd#Role_DisclosureSupplementaryInformationForCertainBalanceSheetAccountsSupplementaryInformationForCertainBalanceSheetAccountsTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsSupplementaryInformationForCertainBalanceSheetAccountsTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNoncurrentLiabilitiesTableTextBlock" xlink:type="locator" xlink:label="us-gaap_OtherNoncurrentLiabilitiesTableTextBlock"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ProvisionsForLiabilitiesTableTextBlock" xlink:type="locator" xlink:label="wltw_ProvisionsForLiabilitiesTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherCurrentLiabilitiesTableTextBlock" xlink:type="locator" xlink:label="us-gaap_OtherCurrentLiabilitiesTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAccountsPayableAndAccruedLiabilitiesTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAccountsPayableAndAccruedLiabilitiesTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfOtherAssetsNoncurrentTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfOtherAssetsNoncurrentTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:type="locator" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_ScheduleOfOtherCurrentAssetsTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_ScheduleOfOtherAssetsNoncurrentTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_ScheduleOfAccountsPayableAndAccruedLiabilitiesTableTextBlock" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OtherCurrentLiabilitiesTableTextBlock" order="10070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_ProvisionsForLiabilitiesTableTextBlock" order="10090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OtherNoncurrentLiabilitiesTableTextBlock" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureOtherIncomeNetTables" xlink:href="wltw-20181231.xsd#Role_DisclosureOtherIncomeNetTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureOtherIncomeNetTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherIncomeAndExpensesAbstract" xlink:type="locator" xlink:label="us-gaap_OtherIncomeAndExpensesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OtherIncomeAndExpensesAbstract" xlink:to="us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossTables" xlink:href="wltw-20181231.xsd#Role_DisclosureAccumulatedOtherComprehensiveLossTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfComprehensiveIncomeLossTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfComprehensiveIncomeLossTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityAbstract" xlink:type="locator" xlink:label="us-gaap_EquityAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityAbstract" xlink:to="us-gaap_ScheduleOfComprehensiveIncomeLossTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityAbstract" xlink:to="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureShareBasedCompensationTables" xlink:href="wltw-20181231.xsd#Role_DisclosureShareBasedCompensationTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureShareBasedCompensationTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:type="locator" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:to="us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:to="us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:to="us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureEarningsPerShareTables" xlink:href="wltw-20181231.xsd#Role_DisclosureEarningsPerShareTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureEarningsPerShareTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementalDisclosuresOfCashFlowInformationTables" xlink:href="wltw-20181231.xsd#Role_DisclosureSupplementalDisclosuresOfCashFlowInformationTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementalDisclosuresOfCashFlowInformationTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SupplementalCashFlowElementsAbstract" xlink:type="locator" xlink:label="us-gaap_SupplementalCashFlowElementsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SupplementalCashFlowElementsAbstract" xlink:to="us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureQuarterlyFinancialDataUnauditedTables" xlink:href="wltw-20181231.xsd#Role_DisclosureQuarterlyFinancialDataUnauditedTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureQuarterlyFinancialDataUnauditedTables">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:type="locator" xlink:label="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_QuarterlyFinancialInformationDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_QuarterlyFinancialInformationDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_QuarterlyFinancialInformationDisclosureAbstract" xlink:to="us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesTables" xlink:href="wltw-20181231.xsd#Role_DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesTables" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesTables">
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScheduleOfCondensedCashFlowStatementTableTextBlock" xlink:type="locator" xlink:label="srt_ScheduleOfCondensedCashFlowStatementTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScheduleOfCondensedBalanceSheetTableTextBlock" xlink:type="locator" xlink:label="srt_ScheduleOfCondensedBalanceSheetTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CondensedStatementOfComprehensiveIncomeTableTextBlock" xlink:type="locator" xlink:label="srt_CondensedStatementOfComprehensiveIncomeTableTextBlock"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:type="locator" xlink:label="srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:to="srt_CondensedStatementOfComprehensiveIncomeTableTextBlock" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:to="srt_ScheduleOfCondensedBalanceSheetTableTextBlock" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:to="srt_ScheduleOfCondensedCashFlowStatementTableTextBlock" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureNatureOfOperationsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureNatureOfOperationsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureNatureOfOperationsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NumberOfCountriesInWhichEntityOperates" xlink:type="locator" xlink:label="us-gaap_NumberOfCountriesInWhichEntityOperates"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityNumberOfEmployees" xlink:type="locator" xlink:label="dei_EntityNumberOfEmployees"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:type="locator" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="dei_EntityNumberOfEmployees" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_NumberOfCountriesInWhichEntityOperates" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncementsNarrativeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncementsNarrativeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncementsNarrativeDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_ReclassificationForPresentation" xlink:type="locator" xlink:label="wltw_ReclassificationForPresentation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:type="locator" xlink:label="us-gaap_OperatingLeaseLiability"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PortionOfRevenue" xlink:type="locator" xlink:label="wltw_PortionOfRevenue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NumberOfReportingUnits" xlink:type="locator" xlink:label="us-gaap_NumberOfReportingUnits"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedCash" xlink:type="locator" xlink:label="us-gaap_RestrictedCash"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents" xlink:type="locator" xlink:label="us-gaap_RestrictedCashAndCashEquivalents"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityReverseStockSplit" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityReverseStockSplit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityMethodInvestmentOwnershipPercentage" xlink:type="locator" xlink:label="us-gaap_EquityMethodInvestmentOwnershipPercentage"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableInterestEntityOwnershipPercentage" xlink:type="locator" xlink:label="us-gaap_VariableInterestEntityOwnershipPercentage"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" xlink:type="locator" xlink:label="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201707Member" xlink:type="locator" xlink:label="us-gaap_AccountingStandardsUpdate201707Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:type="locator" xlink:label="us-gaap_RetainedEarningsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201602Member" xlink:type="locator" xlink:label="us-gaap_AccountingStandardsUpdate201602Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ReimbursedExpensesMember" xlink:type="locator" xlink:label="wltw_ReimbursedExpensesMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OutsourcedAdministrationMember" xlink:type="locator" xlink:label="wltw_OutsourcedAdministrationMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ConsultingMember" xlink:type="locator" xlink:label="wltw_ConsultingMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BrokingMember" xlink:type="locator" xlink:label="wltw_BrokingMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductAndServiceOtherMember" xlink:type="locator" xlink:label="us-gaap_ProductAndServiceOtherMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductsAndServicesDomain" xlink:type="locator" xlink:label="srt_ProductsAndServicesDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductOrServiceAxis" xlink:type="locator" xlink:label="srt_ProductOrServiceAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:type="locator" xlink:label="us-gaap_AccountingStandardsUpdate201409Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:type="locator" xlink:label="us-gaap_TypeOfAdoptionMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:type="locator" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FurnitureAndFixturesMember" xlink:type="locator" xlink:label="us-gaap_FurnitureAndFixturesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BuildingMember" xlink:type="locator" xlink:label="us-gaap_BuildingMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SoftwareDevelopmentMember" xlink:type="locator" xlink:label="us-gaap_SoftwareDevelopmentMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_WillisLimitedMember" xlink:type="locator" xlink:label="wltw_WillisLimitedMember"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:type="locator" xlink:label="dei_EntityDomain"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:type="locator" xlink:label="dei_LegalEntityAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockMember" xlink:type="locator" xlink:label="us-gaap_CommonStockMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:type="locator" xlink:label="us-gaap_EquityComponentDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementEquityComponentsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:type="locator" xlink:label="srt_MaximumMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:type="locator" xlink:label="srt_MinimumMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:type="locator" xlink:label="srt_RangeMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:type="locator" xlink:label="srt_RangeAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsTable" xlink:type="locator" xlink:label="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:type="locator" xlink:label="us-gaap_AccountingPoliciesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsTable" xlink:to="srt_RangeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeAxis" xlink:to="srt_RangeMember" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MinimumMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MaximumMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsTable" xlink:to="us-gaap_StatementEquityComponentsAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementEquityComponentsAxis" xlink:to="us-gaap_EquityComponentDomain" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_CommonStockMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsTable" xlink:to="dei_LegalEntityAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_WillisLimitedMember" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsTable" xlink:to="us-gaap_PropertyPlantAndEquipmentByTypeAxis" order="10030.06" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:to="us-gaap_PropertyPlantAndEquipmentTypeDomain" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_SoftwareDevelopmentMember" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_BuildingMember" order="10400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_FurnitureAndFixturesMember" order="10420.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsTable" xlink:to="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" order="10030.08" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:to="us-gaap_TypeOfAdoptionMember" order="10540.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TypeOfAdoptionMember" xlink:to="us-gaap_AccountingStandardsUpdate201409Member" order="10560.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsTable" xlink:to="srt_ProductOrServiceAxis" order="10030.10" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductOrServiceAxis" xlink:to="srt_ProductsAndServicesDomain" order="10600.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="us-gaap_ProductAndServiceOtherMember" order="10620.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_BrokingMember" order="10740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_ConsultingMember" order="10860.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_OutsourcedAdministrationMember" order="10980.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_ReimbursedExpensesMember" order="11100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TypeOfAdoptionMember" xlink:to="us-gaap_AccountingStandardsUpdate201602Member" order="11160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_RetainedEarningsMember" order="11240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TypeOfAdoptionMember" xlink:to="us-gaap_AccountingStandardsUpdate201707Member" order="11320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsTable" xlink:to="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" order="11340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" xlink:to="us-gaap_VariableInterestEntityOwnershipPercentage" order="11350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" xlink:to="us-gaap_EquityMethodInvestmentOwnershipPercentage" order="11400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/positiveTerseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" xlink:to="us-gaap_StockholdersEquityReverseStockSplit" order="11470.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" xlink:to="us-gaap_RestrictedCashAndCashEquivalents" order="11520.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" xlink:to="us-gaap_RestrictedCash" order="11540.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" xlink:to="us-gaap_PropertyPlantAndEquipmentUsefulLife" order="11590.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" xlink:to="us-gaap_NumberOfReportingUnits" order="11840.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" xlink:to="wltw_PortionOfRevenue" order="11890.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" xlink:to="us-gaap_OperatingLeaseLiability" order="12140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" xlink:to="us-gaap_OperatingLeaseRightOfUseAsset" order="12160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" xlink:to="wltw_ReclassificationForPresentation" order="12210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncementsFiniteLivedIntangibleAssetsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncementsFiniteLivedIntangibleAssetsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureBasisOfPresentationSignificantAccountingPoliciesAndRecentAccountingPronouncementsFiniteLivedIntangibleAssetsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" xlink:type="locator" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems" xlink:type="locator" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CustomerContractsMember" xlink:type="locator" xlink:label="us-gaap_CustomerContractsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OffMarketFavorableLeaseMember" xlink:type="locator" xlink:label="us-gaap_OffMarketFavorableLeaseMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TrademarksAndTradeNamesMember" xlink:type="locator" xlink:label="us-gaap_TrademarksAndTradeNamesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TradeSecretsMember" xlink:type="locator" xlink:label="us-gaap_TradeSecretsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComputerSoftwareIntangibleAssetMember" xlink:type="locator" xlink:label="us-gaap_ComputerSoftwareIntangibleAssetMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:type="locator" xlink:label="us-gaap_CustomerRelationshipsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:type="locator" xlink:label="srt_MaximumMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:type="locator" xlink:label="srt_MinimumMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:type="locator" xlink:label="srt_RangeMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:type="locator" xlink:label="srt_RangeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:type="locator" xlink:label="us-gaap_AccountingPoliciesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable" xlink:to="srt_RangeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeAxis" xlink:to="srt_RangeMember" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MinimumMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MaximumMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable" xlink:to="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_CustomerRelationshipsMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_ComputerSoftwareIntangibleAssetMember" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_TradeSecretsMember" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_TrademarksAndTradeNamesMember" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_OffMarketFavorableLeaseMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_CustomerContractsMember" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAcquiredAsPartOfBusinessCombinationTable" xlink:to="us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems" xlink:to="us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureMergerAcquisitionsAndDivestituresNarrativeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureMergerAcquisitionsAndDivestituresNarrativeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureMergerAcquisitionsAndDivestituresNarrativeDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:type="locator" xlink:label="us-gaap_Goodwill"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:type="locator" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BusinessCombinationDeferredConsideration" xlink:type="locator" xlink:label="wltw_BusinessCombinationDeferredConsideration"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross" xlink:type="locator" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAcquiredFromAcquisition" xlink:type="locator" xlink:label="us-gaap_CashAcquiredFromAcquisition"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:type="locator" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BusinessCombinationConversionOfAcquireeCommonSharesToAcquirerCommonSharesConversionRatio" xlink:type="locator" xlink:label="wltw_BusinessCombinationConversionOfAcquireeCommonSharesToAcquirerCommonSharesConversionRatio"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PeriodOfBusinessExtension" xlink:type="locator" xlink:label="wltw_PeriodOfBusinessExtension"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AlstonGaylerAcquisitionMember" xlink:type="locator" xlink:label="wltw_AlstonGaylerAcquisitionMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OrdinaryShareThreeMember" xlink:type="locator" xlink:label="wltw_OrdinaryShareThreeMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:type="locator" xlink:label="us-gaap_ClassOfStockDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:type="locator" xlink:label="us-gaap_StatementClassOfStockAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TowersWatsonCoMember" xlink:type="locator" xlink:label="wltw_TowersWatsonCoMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessCombinationsAbstract" xlink:to="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="us-gaap_BusinessAcquisitionAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionAxis" xlink:to="us-gaap_BusinessAcquisitionAcquireeDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="wltw_TowersWatsonCoMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="us-gaap_StatementClassOfStockAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_ClassOfStockDomain" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="wltw_OrdinaryShareThreeMember" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="wltw_AlstonGaylerAcquisitionMember" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="us-gaap_BusinessAcquisitionLineItems" order="10440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="wltw_PeriodOfBusinessExtension" order="10450.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="wltw_BusinessCombinationConversionOfAcquireeCommonSharesToAcquirerCommonSharesConversionRatio" order="10500.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare" order="10520.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="us-gaap_CashAcquiredFromAcquisition" order="10570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="us-gaap_BusinessCombinationConsiderationTransferred1" order="10620.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="us-gaap_PaymentsToAcquireBusinessesGross" order="10640.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="wltw_BusinessCombinationDeferredConsideration" order="10660.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="us-gaap_IntangibleAssetsNetExcludingGoodwill" order="10680.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="us-gaap_Goodwill" order="10700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureMergerAcquisitionsAndDivestituresCalculationOfAggregateMergerConsiderationDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureMergerAcquisitionsAndDivestituresCalculationOfAggregateMergerConsiderationDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureMergerAcquisitionsAndDivestituresCalculationOfAggregateMergerConsiderationDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationAcquisitionAwardReplacementValue" xlink:type="locator" xlink:label="wltw_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationAcquisitionAwardReplacementValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionSharePrice" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionSharePrice"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BusinessCombinationConversionOfAcquireeCommonSharesToAcquirerCommonSharesConversionRatio" xlink:type="locator" xlink:label="wltw_BusinessCombinationConversionOfAcquireeCommonSharesToAcquirerCommonSharesConversionRatio"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:type="locator" xlink:label="us-gaap_CommonStockSharesOutstanding"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_WillisGroupHoldingsMember" xlink:type="locator" xlink:label="wltw_WillisGroupHoldingsMember"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:type="locator" xlink:label="dei_EntityDomain"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:type="locator" xlink:label="dei_LegalEntityAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TowersWatsonCoMember" xlink:type="locator" xlink:label="wltw_TowersWatsonCoMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessCombinationsAbstract" xlink:to="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" order="10040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="us-gaap_BusinessAcquisitionAxis" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionAxis" xlink:to="us-gaap_BusinessAcquisitionAcquireeDomain" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="wltw_TowersWatsonCoMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="dei_LegalEntityAxis" order="10050.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_WillisGroupHoldingsMember" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:to="us-gaap_BusinessAcquisitionLineItems" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="us-gaap_CommonStockSharesOutstanding" order="10330.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="wltw_BusinessCombinationConversionOfAcquireeCommonSharesToAcquirerCommonSharesConversionRatio" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued" order="10370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="us-gaap_BusinessAcquisitionSharePrice" order="10390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="wltw_AdjustmentsToAdditionalPaidInCapitalShareBasedCompensationAcquisitionAwardReplacementValue" order="10430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionLineItems" xlink:to="us-gaap_BusinessCombinationConsiderationTransferred1" order="10450.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureMergerAcquisitionsAndDivestituresGlobalWealthSolutionsDivestitureDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureMergerAcquisitionsAndDivestituresGlobalWealthSolutionsDivestitureDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureMergerAcquisitionsAndDivestituresGlobalWealthSolutionsDivestitureDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_RelatedPartyTransactionLoanReceivableTerm" xlink:type="locator" xlink:label="wltw_RelatedPartyTransactionLoanReceivableTerm"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionRate" xlink:type="locator" xlink:label="us-gaap_RelatedPartyTransactionRate"/>
<loc xlink:href="wltw-20181231.xsd#wltw_RelatedPartyLoanCollateral" xlink:type="locator" xlink:label="wltw_RelatedPartyLoanCollateral"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionAmountsOfTransaction" xlink:type="locator" xlink:label="us-gaap_RelatedPartyTransactionAmountsOfTransaction"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:type="locator" xlink:label="us-gaap_RelatedPartyTransactionLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_AffiliatedEntityMember" xlink:type="locator" xlink:label="srt_AffiliatedEntityMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:type="locator" xlink:label="us-gaap_RelatedPartyDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:type="locator" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionsAbstract" xlink:type="locator" xlink:label="us-gaap_RelatedPartyTransactionsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RelatedPartyTransactionsAbstract" xlink:to="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:to="us-gaap_RelatedPartyDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RelatedPartyDomain" xlink:to="srt_AffiliatedEntityMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:to="us-gaap_RelatedPartyTransactionLineItems" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="us-gaap_RelatedPartyTransactionAmountsOfTransaction" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="wltw_RelatedPartyLoanCollateral" order="10190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="us-gaap_RelatedPartyTransactionRate" order="10210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RelatedPartyTransactionLineItems" xlink:to="wltw_RelatedPartyTransactionLoanReceivableTerm" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureMergerAcquisitionsAndDivestituresAllDivestituresDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureMergerAcquisitionsAndDivestituresAllDivestituresDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureMergerAcquisitionsAndDivestituresAllDivestituresDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_DispositionsOperatingIncomeorLosspriortoSales" xlink:type="locator" xlink:label="wltw_DispositionsOperatingIncomeorLosspriortoSales"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DispositionsRevenuespriortoSales" xlink:type="locator" xlink:label="wltw_DispositionsRevenuespriortoSales"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal" xlink:type="locator" xlink:label="us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DispositionsNumberofBusinesses" xlink:type="locator" xlink:label="wltw_DispositionsNumberofBusinesses"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DispositionsAbstract" xlink:type="locator" xlink:label="wltw_DispositionsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DispositionsAbstract" xlink:to="wltw_DispositionsNumberofBusinesses" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DispositionsAbstract" xlink:to="us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DispositionsAbstract" xlink:to="wltw_DispositionsRevenuespriortoSales" order="10090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DispositionsAbstract" xlink:to="wltw_DispositionsOperatingIncomeorLosspriortoSales" order="10130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfEffectOfASC606OnFinancialStatementsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRevenueScheduleOfEffectOfASC606OnFinancialStatementsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfEffectOfASC606OnFinancialStatementsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToDevelopSoftware" xlink:type="locator" xlink:label="us-gaap_PaymentsToDevelopSoftware"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareDiluted"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareBasic"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:type="locator" xlink:label="us-gaap_NetIncomeLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:type="locator" xlink:label="us-gaap_ProfitLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_IncomeTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:type="locator" xlink:label="us-gaap_OperatingIncomeLoss"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DepreciationNotIncludingIntegrationComponent" xlink:type="locator" xlink:label="wltw_DepreciationNotIncludingIntegrationComponent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LaborAndRelatedExpense" xlink:type="locator" xlink:label="us-gaap_LaborAndRelatedExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:type="locator" xlink:label="us-gaap_Revenues"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:type="locator" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationReserveNoncurrent" xlink:type="locator" xlink:label="us-gaap_LitigationReserveNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilitiesGrossNoncurrent" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesGrossNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_OtherLiabilitiesCurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DeferredRevenueAndAccruedLiabilitiesCurrent" xlink:type="locator" xlink:label="wltw_DeferredRevenueAndAccruedLiabilitiesCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherAssetsNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:type="locator" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:type="locator" xlink:label="us-gaap_AccountsReceivableNetCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:type="locator" xlink:label="us-gaap_AccountingStandardsUpdate201409Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:type="locator" xlink:label="us-gaap_TypeOfAdoptionMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:type="locator" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member" xlink:type="locator" xlink:label="us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member" xlink:type="locator" xlink:label="us-gaap_CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CalculatedUnderRevenueGuidanceInTopic606Member" xlink:type="locator" xlink:label="wltw_CalculatedUnderRevenueGuidanceInTopic606Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" xlink:type="locator" xlink:label="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis" xlink:type="locator" xlink:label="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis" xlink:to="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" xlink:to="wltw_CalculatedUnderRevenueGuidanceInTopic606Member" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" xlink:to="us-gaap_CalculatedUnderRevenueGuidanceInEffectBeforeTopic606Member" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" xlink:to="us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:to="us-gaap_TypeOfAdoptionMember" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TypeOfAdoptionMember" xlink:to="us-gaap_AccountingStandardsUpdate201409Member" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" order="10740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_AccountsReceivableNetCurrent" order="10750.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_PrepaidExpenseAndOtherAssetsCurrent" order="10830.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_PropertyPlantAndEquipmentNet" order="10910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_OtherAssetsNoncurrent" order="10990.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="wltw_DeferredRevenueAndAccruedLiabilitiesCurrent" order="11070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_OtherLiabilitiesCurrent" order="11150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_DeferredTaxLiabilitiesGrossNoncurrent" order="11230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_LitigationReserveNoncurrent" order="11310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit" order="11390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_Revenues" order="11500.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_LaborAndRelatedExpense" order="11560.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="wltw_DepreciationNotIncludingIntegrationComponent" order="11620.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_OperatingIncomeLoss" order="11680.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" order="11740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_IncomeTaxExpenseBenefit" order="11800.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_ProfitLoss" order="11860.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_NetIncomeLoss" order="11920.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_EarningsPerShareBasic" order="11980.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_EarningsPerShareDiluted" order="12040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities" order="12700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/positiveTerseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_PaymentsToDevelopSoftware" order="12760.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueNarrativeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRevenueNarrativeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueNarrativeDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PercentageOfIndividualRevenueIncludedInOtherRevenue" xlink:type="locator" xlink:label="wltw_PercentageOfIndividualRevenueIncludedInOtherRevenue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_IncomeTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalizedContractCostAmortizationPeriod" xlink:type="locator" xlink:label="us-gaap_CapitalizedContractCostAmortizationPeriod"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingExpenses" xlink:type="locator" xlink:label="us-gaap_OperatingExpenses"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:type="locator" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:type="locator" xlink:label="us-gaap_Revenues"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:type="locator" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_January12018Member" xlink:type="locator" xlink:label="wltw_January12018Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BalanceSheetDateDomain" xlink:type="locator" xlink:label="wltw_BalanceSheetDateDomain"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BalanceSheetDateAxis" xlink:type="locator" xlink:label="wltw_BalanceSheetDateAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:type="locator" xlink:label="srt_MaximumMember_li0l2"/>
<loc xlink:href="wltw-20181231.xsd#wltw_IncomeTaxEffectMember" xlink:type="locator" xlink:label="wltw_IncomeTaxEffectMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherCostAdjustmentsMember" xlink:type="locator" xlink:label="wltw_OtherCostAdjustmentsMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:type="locator" xlink:label="srt_MaximumMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:type="locator" xlink:label="srt_MinimumMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:type="locator" xlink:label="srt_RangeMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:type="locator" xlink:label="srt_RangeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScenarioPreviouslyReportedMember" xlink:type="locator" xlink:label="srt_ScenarioPreviouslyReportedMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementDomain" xlink:type="locator" xlink:label="srt_RestatementDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RestatementAxis" xlink:type="locator" xlink:label="srt_RestatementAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SystemImplementationActivitiesMember" xlink:type="locator" xlink:label="wltw_SystemImplementationActivitiesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductAndServiceOtherMember" xlink:type="locator" xlink:label="us-gaap_ProductAndServiceOtherMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_HealthAndBenefitsBrokingMember" xlink:type="locator" xlink:label="wltw_HealthAndBenefitsBrokingMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ProportionalTreatyReinsuranceBrokingMember" xlink:type="locator" xlink:label="wltw_ProportionalTreatyReinsuranceBrokingMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:type="locator" xlink:label="us-gaap_AccountingStandardsUpdate201409Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:type="locator" xlink:label="us-gaap_TypeOfAdoptionMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:type="locator" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_MedicareBrokingMember" xlink:type="locator" xlink:label="wltw_MedicareBrokingMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductsAndServicesDomain" xlink:type="locator" xlink:label="srt_ProductsAndServicesDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductOrServiceAxis" xlink:type="locator" xlink:label="srt_ProductOrServiceAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member" xlink:type="locator" xlink:label="us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" xlink:type="locator" xlink:label="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis" xlink:type="locator" xlink:label="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PriorPolicyYearsMember" xlink:type="locator" xlink:label="wltw_PriorPolicyYearsMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CurrentYearPoliciesMember" xlink:type="locator" xlink:label="wltw_CurrentYearPoliciesMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PolicyYearDomain" xlink:type="locator" xlink:label="wltw_PolicyYearDomain"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PolicyYearAxis" xlink:type="locator" xlink:label="wltw_PolicyYearAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="wltw_PolicyYearAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_PolicyYearAxis" xlink:to="wltw_PolicyYearDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_PolicyYearDomain" xlink:to="wltw_CurrentYearPoliciesMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_PolicyYearDomain" xlink:to="wltw_PriorPolicyYearsMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis" xlink:to="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" xlink:to="us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="srt_ProductOrServiceAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductOrServiceAxis" xlink:to="srt_ProductsAndServicesDomain" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_MedicareBrokingMember" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" order="10030.06" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:to="us-gaap_TypeOfAdoptionMember" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TypeOfAdoptionMember" xlink:to="us-gaap_AccountingStandardsUpdate201409Member" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_ProportionalTreatyReinsuranceBrokingMember" order="10540.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_HealthAndBenefitsBrokingMember" order="10780.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="us-gaap_ProductAndServiceOtherMember" order="11020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_SystemImplementationActivitiesMember" order="11260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="srt_RestatementAxis" order="10030.08" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RestatementAxis" xlink:to="srt_RestatementDomain" order="11480.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RestatementDomain" xlink:to="srt_ScenarioPreviouslyReportedMember" order="11500.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="srt_RangeAxis" order="10030.10" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeAxis" xlink:to="srt_RangeMember" order="11560.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MinimumMember" order="11580.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MaximumMember" order="11600.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_OtherCostAdjustmentsMember" order="11740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_IncomeTaxEffectMember" order="11980.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MaximumMember_li0l2" order="12140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="wltw_BalanceSheetDateAxis" order="10030.12" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_BalanceSheetDateAxis" xlink:to="wltw_BalanceSheetDateDomain" order="12320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_BalanceSheetDateDomain" xlink:to="wltw_January12018Member" order="12340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" order="12360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" order="12370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_Revenues" order="12420.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit" order="12460.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_OperatingExpenses" order="12940.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_CapitalizedContractCostAmortizationPeriod" order="12980.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_IncomeTaxExpenseBenefit" order="13200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="wltw_PercentageOfIndividualRevenueIncludedInOtherRevenue" order="13350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_ContractWithCustomerLiabilityRevenueRecognized" order="13400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfEffectOfASC606OnItemsInRetainedEarningsAndEarningsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRevenueScheduleOfEffectOfASC606OnItemsInRetainedEarningsAndEarningsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfEffectOfASC606OnItemsInRetainedEarningsAndEarningsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:type="locator" xlink:label="us-gaap_NetIncomeLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingExpenses" xlink:type="locator" xlink:label="us-gaap_OperatingExpenses"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:type="locator" xlink:label="us-gaap_Revenues"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_IncomeTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:type="locator" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_IncomeTaxEffectMember" xlink:type="locator" xlink:label="wltw_IncomeTaxEffectMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CostAdjustmentsMember" xlink:type="locator" xlink:label="wltw_CostAdjustmentsMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherCostAdjustmentsMember" xlink:type="locator" xlink:label="wltw_OtherCostAdjustmentsMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SystemImplementationActivitiesMember" xlink:type="locator" xlink:label="wltw_SystemImplementationActivitiesMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_RevenueAdjustmentsMember" xlink:type="locator" xlink:label="wltw_RevenueAdjustmentsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductAndServiceOtherMember" xlink:type="locator" xlink:label="us-gaap_ProductAndServiceOtherMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_HealthAndBenefitsBrokingMember" xlink:type="locator" xlink:label="wltw_HealthAndBenefitsBrokingMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ProportionalTreatyReinsuranceBrokingMember" xlink:type="locator" xlink:label="wltw_ProportionalTreatyReinsuranceBrokingMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_MedicareBrokingMember" xlink:type="locator" xlink:label="wltw_MedicareBrokingMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductsAndServicesDomain" xlink:type="locator" xlink:label="srt_ProductsAndServicesDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductOrServiceAxis" xlink:type="locator" xlink:label="srt_ProductOrServiceAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201409Member" xlink:type="locator" xlink:label="us-gaap_AccountingStandardsUpdate201409Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:type="locator" xlink:label="us-gaap_TypeOfAdoptionMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:type="locator" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member" xlink:type="locator" xlink:label="us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" xlink:type="locator" xlink:label="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis" xlink:type="locator" xlink:label="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionAxis" xlink:to="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InitialApplicationPeriodCumulativeEffectTransitionDomain" xlink:to="us-gaap_DifferenceBetweenRevenueGuidanceInEffectBeforeAndAfterTopic606Member" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:to="us-gaap_TypeOfAdoptionMember" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TypeOfAdoptionMember" xlink:to="us-gaap_AccountingStandardsUpdate201409Member" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="srt_ProductOrServiceAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductOrServiceAxis" xlink:to="srt_ProductsAndServicesDomain" order="10660.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_MedicareBrokingMember" order="10680.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_ProportionalTreatyReinsuranceBrokingMember" order="10700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_HealthAndBenefitsBrokingMember" order="10720.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="us-gaap_ProductAndServiceOtherMember" order="10740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_RevenueAdjustmentsMember" order="10760.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_SystemImplementationActivitiesMember" order="10780.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_OtherCostAdjustmentsMember" order="10800.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_CostAdjustmentsMember" order="10820.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_IncomeTaxEffectMember" order="10840.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" order="11640.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit" order="11650.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_IncomeTaxExpenseBenefit" order="11850.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_Revenues" order="11900.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_OperatingExpenses" order="12000.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_NetIncomeLoss" order="12080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfDisaggregationOfRevenueDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRevenueScheduleOfDisaggregationOfRevenueDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfDisaggregationOfRevenueDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:type="locator" xlink:label="us-gaap_Revenues"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:type="locator" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_InterestAndOtherIncomeMember" xlink:type="locator" xlink:label="wltw_InterestAndOtherIncomeMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProductAndServiceOtherMember" xlink:type="locator" xlink:label="us-gaap_ProductAndServiceOtherMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OutsourcedAdministrationMember" xlink:type="locator" xlink:label="wltw_OutsourcedAdministrationMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ConsultingMember" xlink:type="locator" xlink:label="wltw_ConsultingMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BrokingMember" xlink:type="locator" xlink:label="wltw_BrokingMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductsAndServicesDomain" xlink:type="locator" xlink:label="srt_ProductsAndServicesDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductOrServiceAxis" xlink:type="locator" xlink:label="srt_ProductOrServiceAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:type="locator" xlink:label="us-gaap_MaterialReconcilingItemsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:type="locator" xlink:label="us-gaap_OperatingSegmentsMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:type="locator" xlink:label="srt_ConsolidationItemsDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:type="locator" xlink:label="srt_ConsolidationItemsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:type="locator" xlink:label="us-gaap_CorporateNonSegmentMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BenefitsDeliveryAndAdministrationMember" xlink:type="locator" xlink:label="wltw_BenefitsDeliveryAndAdministrationMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_InvestmentRiskAndReinsuranceMember" xlink:type="locator" xlink:label="wltw_InvestmentRiskAndReinsuranceMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CorporateRiskAndBrokingMember" xlink:type="locator" xlink:label="wltw_CorporateRiskAndBrokingMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_HumanCapitalAndBenefitsMember" xlink:type="locator" xlink:label="wltw_HumanCapitalAndBenefitsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:type="locator" xlink:label="us-gaap_SegmentDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementBusinessSegmentsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_StatementBusinessSegmentsAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementBusinessSegmentsAxis" xlink:to="us-gaap_SegmentDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_HumanCapitalAndBenefitsMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_CorporateRiskAndBrokingMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_InvestmentRiskAndReinsuranceMember" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_BenefitsDeliveryAndAdministrationMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="us-gaap_CorporateNonSegmentMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="srt_ConsolidationItemsAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsAxis" xlink:to="srt_ConsolidationItemsDomain" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="us-gaap_OperatingSegmentsMember" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="us-gaap_MaterialReconcilingItemsMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="srt_ProductOrServiceAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductOrServiceAxis" xlink:to="srt_ProductsAndServicesDomain" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_BrokingMember" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_ConsultingMember" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_OutsourcedAdministrationMember" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="us-gaap_ProductAndServiceOtherMember" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ProductsAndServicesDomain" xlink:to="wltw_InterestAndOtherIncomeMember" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" order="10400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_Revenues" order="11370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfRevenueByGeographyDetail" xlink:href="wltw-20181231.xsd#Role_DisclosureRevenueScheduleOfRevenueByGeographyDetail" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfRevenueByGeographyDetail">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:type="locator" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:type="locator" xlink:label="us-gaap_CorporateNonSegmentMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:type="locator" xlink:label="us-gaap_OperatingSegmentsMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:type="locator" xlink:label="srt_ConsolidationItemsDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:type="locator" xlink:label="srt_ConsolidationItemsAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BenefitsDeliveryAndAdministrationMember" xlink:type="locator" xlink:label="wltw_BenefitsDeliveryAndAdministrationMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_InvestmentRiskAndReinsuranceMember" xlink:type="locator" xlink:label="wltw_InvestmentRiskAndReinsuranceMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CorporateRiskAndBrokingMember" xlink:type="locator" xlink:label="wltw_CorporateRiskAndBrokingMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_HumanCapitalAndBenefitsMember" xlink:type="locator" xlink:label="wltw_HumanCapitalAndBenefitsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:type="locator" xlink:label="us-gaap_SegmentDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementBusinessSegmentsAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_InternationalMember" xlink:type="locator" xlink:label="wltw_InternationalMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_WesternEuropeMember" xlink:type="locator" xlink:label="wltw_WesternEuropeMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_GreatBritainMember" xlink:type="locator" xlink:label="wltw_GreatBritainMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_NorthAmericaMember" xlink:type="locator" xlink:label="srt_NorthAmericaMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:type="locator" xlink:label="srt_SegmentGeographicalDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:type="locator" xlink:label="srt_StatementGeographicalAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="srt_StatementGeographicalAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_StatementGeographicalAxis" xlink:to="srt_SegmentGeographicalDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="srt_NorthAmericaMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="wltw_GreatBritainMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="wltw_WesternEuropeMember" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="wltw_InternationalMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_StatementBusinessSegmentsAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementBusinessSegmentsAxis" xlink:to="us-gaap_SegmentDomain" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_HumanCapitalAndBenefitsMember" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_CorporateRiskAndBrokingMember" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_InvestmentRiskAndReinsuranceMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_BenefitsDeliveryAndAdministrationMember" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="srt_ConsolidationItemsAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsAxis" xlink:to="srt_ConsolidationItemsDomain" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="us-gaap_OperatingSegmentsMember" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="us-gaap_CorporateNonSegmentMember" order="10400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" order="10440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" order="10450.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfContractBalancesDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRevenueScheduleOfContractBalancesDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfContractBalancesDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:type="locator" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerLiability" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerLiability"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerAssetNetNoncurrent" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerAssetNetNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNetNoncurrent" xlink:type="locator" xlink:label="us-gaap_AccountsReceivableNetNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:type="locator" xlink:label="us-gaap_AccountsReceivableNetCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ContractWithCustomerAssetNetCurrent" xlink:type="locator" xlink:label="us-gaap_ContractWithCustomerAssetNetCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnbilledReceivablesCurrent" xlink:type="locator" xlink:label="us-gaap_UnbilledReceivablesCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BilledContractReceivables" xlink:type="locator" xlink:label="us-gaap_BilledContractReceivables"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_BilledContractReceivables" order="10040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_UnbilledReceivablesCurrent" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_ContractWithCustomerAssetNetCurrent" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_AccountsReceivableNetCurrent" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_AccountsReceivableNetNoncurrent" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_ContractWithCustomerAssetNetNoncurrent" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_ContractWithCustomerLiability" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivable" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfChangesInAllowanceForDoubtfulAccountsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRevenueScheduleOfChangesInAllowanceForDoubtfulAccountsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfChangesInAllowanceForDoubtfulAccountsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesBalance" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesBalance_li0l2"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ValuationAllowancesAndReservesForeignExchangeDifferences" xlink:type="locator" xlink:label="wltw_ValuationAllowancesAndReservesForeignExchangeDifferences"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDeductions" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesDeductions"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesBalance" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesBalance"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:type="locator" xlink:label="srt_ValuationAndQualifyingAccountsDisclosureLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AllowanceForCreditLossMember" xlink:type="locator" xlink:label="us-gaap_AllowanceForCreditLossMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureTable" xlink:type="locator" xlink:label="srt_ValuationAndQualifyingAccountsDisclosureTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="srt_ValuationAndQualifyingAccountsDisclosureTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ValuationAndQualifyingAccountsDisclosureTable" xlink:to="us-gaap_ValuationAllowancesAndReservesTypeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:to="us-gaap_ValuationAllowancesAndReservesDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ValuationAllowancesAndReservesDomain" xlink:to="us-gaap_AllowanceForCreditLossMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ValuationAndQualifyingAccountsDisclosureTable" xlink:to="srt_ValuationAndQualifyingAccountsDisclosureLineItems" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:to="us-gaap_ValuationAllowancesAndReservesBalance" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:to="us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:to="us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:to="us-gaap_ValuationAllowancesAndReservesDeductions" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:to="wltw_ValuationAllowancesAndReservesForeignExchangeDifferences" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:to="us-gaap_ValuationAllowancesAndReservesBalance_li0l2" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfRemainingPerformanceObligationsDetails1" xlink:href="wltw-20181231.xsd#Role_DisclosureRevenueScheduleOfRemainingPerformanceObligationsDetails1" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfRemainingPerformanceObligationsDetails1">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1" xlink:type="locator" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligation" xlink:type="locator" xlink:label="us-gaap_RevenueRemainingPerformanceObligation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis" xlink:type="locator" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:to="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_RevenueRemainingPerformanceObligation" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:to="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfRemainingPerformanceObligationsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRevenueScheduleOfRemainingPerformanceObligationsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfRemainingPerformanceObligationsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRemainingPerformanceObligation" xlink:type="locator" xlink:label="us-gaap_RevenueRemainingPerformanceObligation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_RevenueRemainingPerformanceObligation" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfCapitalizedAndDeferredCostsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRevenueScheduleOfCapitalizedAndDeferredCostsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRevenueScheduleOfCapitalizedAndDeferredCostsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalizedContractCostNet" xlink:type="locator" xlink:label="us-gaap_CapitalizedContractCostNet_li0l2"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CapitalizedContractCostForeignExchangeTranslationGainLoss" xlink:type="locator" xlink:label="wltw_CapitalizedContractCostForeignExchangeTranslationGainLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalizedContractCostImpairmentLoss" xlink:type="locator" xlink:label="us-gaap_CapitalizedContractCostImpairmentLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalizedContractCostAmortization" xlink:type="locator" xlink:label="us-gaap_CapitalizedContractCostAmortization"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CapitalizedContractCostAdditions" xlink:type="locator" xlink:label="wltw_CapitalizedContractCostAdditions"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalizedContractCostNet" xlink:type="locator" xlink:label="us-gaap_CapitalizedContractCostNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:type="locator" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_CapitalizedContractCostNet" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="wltw_CapitalizedContractCostAdditions" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_CapitalizedContractCostAmortization" order="10090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_CapitalizedContractCostImpairmentLoss" order="10130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="wltw_CapitalizedContractCostForeignExchangeTranslationGainLoss" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesAbstract" xlink:to="us-gaap_CapitalizedContractCostNet_li0l2" order="10210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSegmentInformationNarrativeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureSegmentInformationNarrativeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSegmentInformationNarrativeDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:type="locator" xlink:label="us-gaap_NumberOfReportableSegments"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NumberOfOperatingSegments" xlink:type="locator" xlink:label="us-gaap_NumberOfOperatingSegments"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:type="locator" xlink:label="us-gaap_SegmentReportingAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingAbstract" xlink:to="us-gaap_NumberOfOperatingSegments" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingAbstract" xlink:to="us-gaap_NumberOfReportableSegments" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSegmentInformationRevenueNetOfReimbursableExpensesOfReportedSegmentsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureSegmentInformationRevenueNetOfReimbursableExpensesOfReportedSegmentsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSegmentInformationRevenueNetOfReimbursableExpensesOfReportedSegmentsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:type="locator" xlink:label="us-gaap_OperatingIncomeLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:type="locator" xlink:label="us-gaap_Revenues"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:type="locator" xlink:label="us-gaap_SegmentReportingInformationLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BenefitsDeliveryAndAdministrationMember" xlink:type="locator" xlink:label="wltw_BenefitsDeliveryAndAdministrationMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_InvestmentRiskAndReinsuranceMember" xlink:type="locator" xlink:label="wltw_InvestmentRiskAndReinsuranceMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CorporateRiskAndBrokingMember" xlink:type="locator" xlink:label="wltw_CorporateRiskAndBrokingMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_HumanCapitalAndBenefitsMember" xlink:type="locator" xlink:label="wltw_HumanCapitalAndBenefitsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:type="locator" xlink:label="us-gaap_SegmentDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementBusinessSegmentsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:type="locator" xlink:label="us-gaap_OperatingSegmentsMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:type="locator" xlink:label="srt_ConsolidationItemsDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:type="locator" xlink:label="srt_ConsolidationItemsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:type="locator" xlink:label="us-gaap_SegmentReportingAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingAbstract" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="srt_ConsolidationItemsAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsAxis" xlink:to="srt_ConsolidationItemsDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="us-gaap_OperatingSegmentsMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="us-gaap_StatementBusinessSegmentsAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementBusinessSegmentsAxis" xlink:to="us-gaap_SegmentDomain" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_HumanCapitalAndBenefitsMember" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_CorporateRiskAndBrokingMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_InvestmentRiskAndReinsuranceMember" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_BenefitsDeliveryAndAdministrationMember" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="us-gaap_SegmentReportingInformationLineItems" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationLineItems" xlink:to="us-gaap_Revenues" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationLineItems" xlink:to="us-gaap_OperatingIncomeLoss" order="10790.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSegmentInformationReconciliationOfInformationReportedBySegmentToConsolidatedAmountsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureSegmentInformationReconciliationOfInformationReportedBySegmentToConsolidatedAmountsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSegmentInformationReconciliationOfInformationReportedBySegmentToConsolidatedAmountsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:type="locator" xlink:label="us-gaap_OtherNonoperatingIncomeExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestExpense" xlink:type="locator" xlink:label="us-gaap_InterestExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherOperatingIncomeExpenseNet" xlink:type="locator" xlink:label="us-gaap_OtherOperatingIncomeExpenseNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyAccrualProvision" xlink:type="locator" xlink:label="us-gaap_LossContingencyAccrualProvision"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BusinessCombinationIntegrationRelatedTransactionCosts" xlink:type="locator" xlink:label="wltw_BusinessCombinationIntegrationRelatedTransactionCosts"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringCharges" xlink:type="locator" xlink:label="us-gaap_RestructuringCharges"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:type="locator" xlink:label="us-gaap_AmortizationOfIntangibleAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:type="locator" xlink:label="us-gaap_OperatingIncomeLoss"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredRevenue" xlink:type="locator" xlink:label="wltw_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredRevenue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:type="locator" xlink:label="us-gaap_Revenues"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationRevenueAbstract" xlink:type="locator" xlink:label="us-gaap_SegmentReportingInformationRevenueAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" xlink:type="locator" xlink:label="us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:type="locator" xlink:label="us-gaap_MaterialReconcilingItemsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:type="locator" xlink:label="us-gaap_OperatingSegmentsMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:type="locator" xlink:label="srt_ConsolidationItemsDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:type="locator" xlink:label="srt_ConsolidationItemsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" xlink:type="locator" xlink:label="us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:type="locator" xlink:label="us-gaap_SegmentReportingAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingAbstract" xlink:to="us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" xlink:to="srt_ConsolidationItemsAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsAxis" xlink:to="srt_ConsolidationItemsDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="us-gaap_OperatingSegmentsMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="us-gaap_MaterialReconcilingItemsMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTable" xlink:to="us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingReconcilingItemForOperatingProfitLossFromSegmentToConsolidatedLineItems" xlink:to="us-gaap_SegmentReportingInformationRevenueAbstract" order="10330.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="us-gaap_Revenues" order="10450.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="wltw_BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentDeferredRevenue" order="10510.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="us-gaap_OperatingIncomeLoss" order="10690.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="us-gaap_AmortizationOfIntangibleAssets" order="10810.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="us-gaap_RestructuringCharges" order="10870.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="wltw_BusinessCombinationIntegrationRelatedTransactionCosts" order="10930.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="us-gaap_LossContingencyAccrualProvision" order="10990.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="us-gaap_OtherOperatingIncomeExpenseNet" order="11050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="us-gaap_InterestExpense" order="11170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="us-gaap_OtherNonoperatingIncomeExpense" order="11230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationRevenueAbstract" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" order="11290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSegmentInformationRevenueAndLongLivedAssetsByGeographicalAreasDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureSegmentInformationRevenueAndLongLivedAssetsByGeographicalAreasDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSegmentInformationRevenueAndLongLivedAssetsByGeographicalAreasDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NoncurrentAssets" xlink:type="locator" xlink:label="us-gaap_NoncurrentAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:type="locator" xlink:label="us-gaap_Revenues"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:type="locator" xlink:label="us-gaap_SegmentReportingInformationLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ForeignCountriesMember" xlink:type="locator" xlink:label="wltw_ForeignCountriesMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_RestOfWorldMember" xlink:type="locator" xlink:label="wltw_RestOfWorldMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:type="locator" xlink:label="country_GB"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_IE" xlink:type="locator" xlink:label="country_IE"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:type="locator" xlink:label="srt_SegmentGeographicalDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:type="locator" xlink:label="srt_StatementGeographicalAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:type="locator" xlink:label="us-gaap_SegmentReportingAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingAbstract" xlink:to="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="srt_StatementGeographicalAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_StatementGeographicalAxis" xlink:to="srt_SegmentGeographicalDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="country_IE" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="country_US" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="country_GB" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="wltw_RestOfWorldMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="wltw_ForeignCountriesMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:to="us-gaap_SegmentReportingInformationLineItems" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationLineItems" xlink:to="us-gaap_Revenues" order="10190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentReportingInformationLineItems" xlink:to="us-gaap_NoncurrentAssets" order="10670.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRestructuringCostsNarrativeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRestructuringCostsNarrativeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRestructuringCostsNarrativeDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_CumulativeRestructuringCost" xlink:type="locator" xlink:label="wltw_CumulativeRestructuringCost"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringCharges" xlink:type="locator" xlink:label="us-gaap_RestructuringCharges"/>
<loc xlink:href="wltw-20181231.xsd#wltw_RestructuringAndRelatedCostExpectedNumberOfPositionsMoved" xlink:type="locator" xlink:label="wltw_RestructuringAndRelatedCostExpectedNumberOfPositionsMoved"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:type="locator" xlink:label="us-gaap_RestructuringCostAndReserveLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BusinessRestructureProgramMember" xlink:type="locator" xlink:label="wltw_BusinessRestructureProgramMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperationalImprovementProgramMember" xlink:type="locator" xlink:label="wltw_OperationalImprovementProgramMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:type="locator" xlink:label="us-gaap_RestructuringPlanDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:type="locator" xlink:label="us-gaap_RestructuringPlanAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringAndRelatedActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_RestructuringAndRelatedActivitiesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringAndRelatedActivitiesAbstract" xlink:to="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:to="us-gaap_RestructuringPlanAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringPlanAxis" xlink:to="us-gaap_RestructuringPlanDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringPlanDomain" xlink:to="wltw_OperationalImprovementProgramMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringPlanDomain" xlink:to="wltw_BusinessRestructureProgramMember" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:to="us-gaap_RestructuringCostAndReserveLineItems" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringCostAndReserveLineItems" xlink:to="wltw_RestructuringAndRelatedCostExpectedNumberOfPositionsMoved" order="10250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringCostAndReserveLineItems" xlink:to="us-gaap_RestructuringCharges" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringCostAndReserveLineItems" xlink:to="wltw_CumulativeRestructuringCost" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRestructuringCostsAnalysisOfCostForRestructuringDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRestructuringCostsAnalysisOfCostForRestructuringDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRestructuringCostsAnalysisOfCostForRestructuringDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringAndRelatedCostCostIncurredToDate1" xlink:type="locator" xlink:label="us-gaap_RestructuringAndRelatedCostCostIncurredToDate1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringCharges" xlink:type="locator" xlink:label="us-gaap_RestructuringCharges"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:type="locator" xlink:label="us-gaap_RestructuringCostAndReserveLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BusinessRestructureProgramMember" xlink:type="locator" xlink:label="wltw_BusinessRestructureProgramMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperationalImprovementProgramMember" xlink:type="locator" xlink:label="wltw_OperationalImprovementProgramMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:type="locator" xlink:label="us-gaap_RestructuringPlanDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:type="locator" xlink:label="us-gaap_RestructuringPlanAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherRestructuringMember" xlink:type="locator" xlink:label="us-gaap_OtherRestructuringMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SpecialTerminationBenefitsMember" xlink:type="locator" xlink:label="us-gaap_SpecialTerminationBenefitsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:type="locator" xlink:label="us-gaap_TypeOfRestructuringDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis" xlink:type="locator" xlink:label="us-gaap_RestructuringCostAndReserveAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BenefitsDeliveryAndAdministrationMember" xlink:type="locator" xlink:label="wltw_BenefitsDeliveryAndAdministrationMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_InvestmentRiskAndReinsuranceMember" xlink:type="locator" xlink:label="wltw_InvestmentRiskAndReinsuranceMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CorporateRiskAndBrokingMember" xlink:type="locator" xlink:label="wltw_CorporateRiskAndBrokingMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_HumanCapitalAndBenefitsMember" xlink:type="locator" xlink:label="wltw_HumanCapitalAndBenefitsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:type="locator" xlink:label="us-gaap_SegmentDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementBusinessSegmentsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateNonSegmentMember" xlink:type="locator" xlink:label="us-gaap_CorporateNonSegmentMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingSegmentsMember" xlink:type="locator" xlink:label="us-gaap_OperatingSegmentsMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:type="locator" xlink:label="srt_ConsolidationItemsDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:type="locator" xlink:label="srt_ConsolidationItemsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringAndRelatedActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_RestructuringAndRelatedActivitiesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringAndRelatedActivitiesAbstract" xlink:to="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:to="srt_ConsolidationItemsAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsAxis" xlink:to="srt_ConsolidationItemsDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="us-gaap_OperatingSegmentsMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="us-gaap_CorporateNonSegmentMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:to="us-gaap_StatementBusinessSegmentsAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementBusinessSegmentsAxis" xlink:to="us-gaap_SegmentDomain" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_HumanCapitalAndBenefitsMember" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_CorporateRiskAndBrokingMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_InvestmentRiskAndReinsuranceMember" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_BenefitsDeliveryAndAdministrationMember" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:to="us-gaap_RestructuringCostAndReserveAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringCostAndReserveAxis" xlink:to="us-gaap_TypeOfRestructuringDomain" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TypeOfRestructuringDomain" xlink:to="us-gaap_SpecialTerminationBenefitsMember" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TypeOfRestructuringDomain" xlink:to="us-gaap_OtherRestructuringMember" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:to="us-gaap_RestructuringPlanAxis" order="10030.06" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringPlanAxis" xlink:to="us-gaap_RestructuringPlanDomain" order="10440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringPlanDomain" xlink:to="wltw_OperationalImprovementProgramMember" order="10460.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringPlanDomain" xlink:to="wltw_BusinessRestructureProgramMember" order="11260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:to="us-gaap_RestructuringCostAndReserveLineItems" order="11580.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringCostAndReserveLineItems" xlink:to="us-gaap_RestructuringCharges" order="11590.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringCostAndReserveLineItems" xlink:to="us-gaap_RestructuringAndRelatedCostCostIncurredToDate1" order="13580.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRestructuringCostsRestructuringLiabilityDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRestructuringCostsRestructuringLiabilityDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRestructuringCostsRestructuringLiabilityDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringReserve" xlink:type="locator" xlink:label="us-gaap_RestructuringReserve_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForRestructuring" xlink:type="locator" xlink:label="us-gaap_PaymentsForRestructuring"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringCharges" xlink:type="locator" xlink:label="us-gaap_RestructuringCharges"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringReserve" xlink:type="locator" xlink:label="us-gaap_RestructuringReserve"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringReserveRollForward" xlink:type="locator" xlink:label="us-gaap_RestructuringReserveRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:type="locator" xlink:label="us-gaap_RestructuringCostAndReserveLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BusinessRestructureProgramMember" xlink:type="locator" xlink:label="wltw_BusinessRestructureProgramMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherRestructuringMember" xlink:type="locator" xlink:label="us-gaap_OtherRestructuringMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SpecialTerminationBenefitsMember" xlink:type="locator" xlink:label="us-gaap_SpecialTerminationBenefitsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:type="locator" xlink:label="us-gaap_TypeOfRestructuringDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis" xlink:type="locator" xlink:label="us-gaap_RestructuringCostAndReserveAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperationalImprovementProgramMember" xlink:type="locator" xlink:label="wltw_OperationalImprovementProgramMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:type="locator" xlink:label="us-gaap_RestructuringPlanDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:type="locator" xlink:label="us-gaap_RestructuringPlanAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringAndRelatedActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_RestructuringAndRelatedActivitiesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringAndRelatedActivitiesAbstract" xlink:to="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:to="us-gaap_RestructuringPlanAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringPlanAxis" xlink:to="us-gaap_RestructuringPlanDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringPlanDomain" xlink:to="wltw_OperationalImprovementProgramMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:to="us-gaap_RestructuringCostAndReserveAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringCostAndReserveAxis" xlink:to="us-gaap_TypeOfRestructuringDomain" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TypeOfRestructuringDomain" xlink:to="us-gaap_SpecialTerminationBenefitsMember" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TypeOfRestructuringDomain" xlink:to="us-gaap_OtherRestructuringMember" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringPlanDomain" xlink:to="wltw_BusinessRestructureProgramMember" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:to="us-gaap_RestructuringCostAndReserveLineItems" order="10400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringCostAndReserveLineItems" xlink:to="us-gaap_RestructuringReserveRollForward" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringReserveRollForward" xlink:to="us-gaap_RestructuringReserve" order="10570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringReserveRollForward" xlink:to="us-gaap_RestructuringCharges" order="10650.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/positiveLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringReserveRollForward" xlink:to="us-gaap_PaymentsForRestructuring" order="10730.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RestructuringReserveRollForward" xlink:to="us-gaap_RestructuringReserve_li0l2" order="10810.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesNarrativeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureIncomeTaxesNarrativeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesNarrativeDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit" xlink:type="locator" xlink:label="us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExaminationPenaltiesAccrued" xlink:type="locator" xlink:label="us-gaap_IncomeTaxExaminationPenaltiesAccrued"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible" xlink:type="locator" xlink:label="us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefits"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UndistributedEarningsOfForeignSubsidiaries" xlink:type="locator" xlink:label="us-gaap_UndistributedEarningsOfForeignSubsidiaries"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AdditionalRepatriationAmountPreviouslyDeemedIndefinitelyReinvested" xlink:type="locator" xlink:label="wltw_AdditionalRepatriationAmountPreviouslyDeemedIndefinitelyReinvested"/>
<loc xlink:href="wltw-20181231.xsd#wltw_Foreignwithholdingtaxesandstateincometaxesonpotentialrepatriationamountpreviouslydeemedindefinitelyreinvested" xlink:type="locator" xlink:label="wltw_Foreignwithholdingtaxesandstateincometaxesonpotentialrepatriationamountpreviouslydeemedindefinitelyreinvested"/>
<loc xlink:href="wltw-20181231.xsd#wltw_Potentialrepatriationamountpreviouslydeemedindefinitelyreinvested" xlink:type="locator" xlink:label="wltw_Potentialrepatriationamountpreviouslydeemedindefinitelyreinvested"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLossCarryforwardsValuationAllowance" xlink:type="locator" xlink:label="us-gaap_OperatingLossCarryforwardsValuationAllowance"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:type="locator" xlink:label="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsNet" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>
<loc xlink:href="wltw-20181231.xsd#wltw_EffectiveIncomeTaxReconciliationForeignStatutoryIncomeTaxRate" xlink:type="locator" xlink:label="wltw_EffectiveIncomeTaxReconciliationForeignStatutoryIncomeTaxRate"/>
<loc xlink:href="wltw-20181231.xsd#wltw_Federalandstatetaxexpensebenefitonpotentialrepatriationamountpreviouslydeemedindefinitelyreinvested" xlink:type="locator" xlink:label="wltw_Federalandstatetaxexpensebenefitonpotentialrepatriationamountpreviouslydeemedindefinitelyreinvested"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_OtherTaxExpenseBenefit"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DeferredTaxExpenseBenefitOnPotentialRepatriationAmountPreviouslyDeemedIndefinitelyReinvested" xlink:type="locator" xlink:label="wltw_DeferredTaxExpenseBenefitOnPotentialRepatriationAmountPreviouslyDeemedIndefinitelyReinvested"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInFederalCorporateTaxRateAndRemeasurementOfDeferredTaxLiabilitiesRelatedToAcquisitionBasedIntangiblesProvisionalIncomeTaxBenefit" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInFederalCorporateTaxRateAndRemeasurementOfDeferredTaxLiabilitiesRelatedToAcquisitionBasedIntangiblesProvisionalIncomeTaxBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherReconcilingItems" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationOtherReconcilingItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit"/>
<loc xlink:href="wltw-20181231.xsd#wltw_IncomeTaxReconciliationGlobalIntangibleLowTaxedIncome" xlink:type="locator" xlink:label="wltw_IncomeTaxReconciliationGlobalIntangibleLowTaxedIncome"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActCompleteAccountingExecutiveCompensationMeasurementPeriodAdjustmentInEffectiveTaxRate" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActCompleteAccountingExecutiveCompensationMeasurementPeriodAdjustmentInEffectiveTaxRate"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActCompleteAccountingExecutiveCompensationIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActCompleteAccountingExecutiveCompensationIncomeTaxExpenseBenefit"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActIncompleteAccountingExecutiveCompensationProvisionalIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActIncompleteAccountingExecutiveCompensationProvisionalIncomeTaxExpenseBenefit"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActCompleteAccountingExecutiveCompensationDeductionLimit" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActCompleteAccountingExecutiveCompensationDeductionLimit"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActIncompleteAccountingBonusDepreciationProvisionalIncreaseInFederalCurrentIncomeTaxesReceivable" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActIncompleteAccountingBonusDepreciationProvisionalIncreaseInFederalCurrentIncomeTaxesReceivable"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActIncompleteAccountingBonusDepreciationProvisionalIncreaseInNetDeferredTaxLiabilities" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActIncompleteAccountingBonusDepreciationProvisionalIncreaseInNetDeferredTaxLiabilities"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActCompleteAccountingBonusDepreciationProvisionalTaxDeduction" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActCompleteAccountingBonusDepreciationProvisionalTaxDeduction"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActIncompleteAccountingBonusDepreciationProvisionalTaxDeduction" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActIncompleteAccountingBonusDepreciationProvisionalTaxDeduction"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PercentageOfDividendsReceivedFromOwnedForeignCorporationsByUSCorporateShareholders" xlink:type="locator" xlink:label="wltw_PercentageOfDividendsReceivedFromOwnedForeignCorporationsByUSCorporateShareholders"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalTransitionTaxForForeignEarningsProvisionalIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalTransitionTaxForForeignEarningsProvisionalIncomeTaxExpenseBenefit"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActOf2017IncompleteAccountingRepatriationOfForeignEarningsProvisionalIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActOf2017IncompleteAccountingRepatriationOfForeignEarningsProvisionalIncomeTaxExpenseBenefit"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActIncompleteAccountingRepatriationOfForeignEarningsPreviouslyDeemedIndefinitelyReinvested" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActIncompleteAccountingRepatriationOfForeignEarningsPreviouslyDeemedIndefinitelyReinvested"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PercentageOfImpactOnEffectiveTaxRate" xlink:type="locator" xlink:label="wltw_PercentageOfImpactOnEffectiveTaxRate"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActCompleteAccountingAdditionalIncreaseToIncomeTaxExpense" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActCompleteAccountingAdditionalIncreaseToIncomeTaxExpense"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActOf2017CompleteAccountingChangeInTaxRateOneTimeTransitionTaxLiabilityProvisionalIncomeTaxBenefit" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActOf2017CompleteAccountingChangeInTaxRateOneTimeTransitionTaxLiabilityProvisionalIncomeTaxBenefit"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActOf2017IncompleteAccountingOneTimeTransitionTaxLiabilityForForeignSubsidiariesProvisionalIncomeTaxExpense" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActOf2017IncompleteAccountingOneTimeTransitionTaxLiabilityForForeignSubsidiariesProvisionalIncomeTaxExpense"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActOf2017CompleteAccountingChangeInTaxRateProvisionalAdditionalDeferredIncomeTaxBenefit" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActOf2017CompleteAccountingChangeInTaxRateProvisionalAdditionalDeferredIncomeTaxBenefit"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalDeferredIncomeTaxBenefit" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalDeferredIncomeTaxBenefit"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxLiability" xlink:type="locator" xlink:label="wltw_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxLiability"/>
<loc xlink:href="wltw-20181231.xsd#wltw_GILTIDeductionRate" xlink:type="locator" xlink:label="wltw_GILTIDeductionRate"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:type="locator" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLossCarryforwardsLineItems" xlink:type="locator" xlink:label="us-gaap_OperatingLossCarryforwardsLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_InternalRestructuringMember" xlink:type="locator" xlink:label="wltw_InternalRestructuringMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterimPeriodCostsNotAllocableDomain" xlink:type="locator" xlink:label="us-gaap_InterimPeriodCostsNotAllocableDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NatureOfExpenseAxis" xlink:type="locator" xlink:label="us-gaap_NatureOfExpenseAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLossCarryforwardMember" xlink:type="locator" xlink:label="us-gaap_CapitalLossCarryforwardMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TaxCreditCarryforwardNameDomain" xlink:type="locator" xlink:label="us-gaap_TaxCreditCarryforwardNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TaxCreditCarryforwardAxis" xlink:type="locator" xlink:label="us-gaap_TaxCreditCarryforwardAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignCountryMember" xlink:type="locator" xlink:label="us-gaap_ForeignCountryMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HerMajestysRevenueAndCustomsHMRCMember" xlink:type="locator" xlink:label="us-gaap_HerMajestysRevenueAndCustomsHMRCMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxYear2019Through2038Member" xlink:type="locator" xlink:label="wltw_TaxYear2019Through2038Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TaxPeriodDomain" xlink:type="locator" xlink:label="us-gaap_TaxPeriodDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TaxPeriodAxis" xlink:type="locator" xlink:label="us-gaap_TaxPeriodAxis"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:type="locator" xlink:label="srt_SegmentGeographicalDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:type="locator" xlink:label="srt_StatementGeographicalAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_FederalAndForeignTaxAuthorityMember" xlink:type="locator" xlink:label="wltw_FederalAndForeignTaxAuthorityMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticCountryMember" xlink:type="locator" xlink:label="us-gaap_DomesticCountryMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueCommissionersIrelandMember" xlink:type="locator" xlink:label="us-gaap_RevenueCommissionersIrelandMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_Section162mMember" xlink:type="locator" xlink:label="wltw_Section162mMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LegislationsectionDomain" xlink:type="locator" xlink:label="wltw_LegislationsectionDomain"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LegislationsectionAxis" xlink:type="locator" xlink:label="wltw_LegislationsectionAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ExecutiveCompensationMember" xlink:type="locator" xlink:label="wltw_ExecutiveCompensationMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OneTimeTransitionTaxMember" xlink:type="locator" xlink:label="wltw_OneTimeTransitionTaxMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LegislationaspectDomain" xlink:type="locator" xlink:label="wltw_LegislationaspectDomain"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LegislationaspectAxis" xlink:type="locator" xlink:label="wltw_LegislationaspectAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TaxCutsandJobsActMember" xlink:type="locator" xlink:label="wltw_TaxCutsandJobsActMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LegislationtypeDomain" xlink:type="locator" xlink:label="wltw_LegislationtypeDomain"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LegislationAxis" xlink:type="locator" xlink:label="wltw_LegislationAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember" xlink:type="locator" xlink:label="us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:type="locator" xlink:label="srt_MaximumMember_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StateAndLocalJurisdictionMember" xlink:type="locator" xlink:label="us-gaap_StateAndLocalJurisdictionMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxAuthorityAxis" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InternalRevenueServiceIRSMember" xlink:type="locator" xlink:label="us-gaap_InternalRevenueServiceIRSMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxAuthorityNameDomain" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxAuthorityNameAxis" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityNameAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:type="locator" xlink:label="srt_MinimumMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:type="locator" xlink:label="srt_MaximumMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:type="locator" xlink:label="srt_RangeMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:type="locator" xlink:label="srt_RangeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLossCarryforwardsTable" xlink:type="locator" xlink:label="us-gaap_OperatingLossCarryforwardsTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeTaxDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_OperatingLossCarryforwardsTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsTable" xlink:to="srt_RangeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeAxis" xlink:to="srt_RangeMember" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MaximumMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MinimumMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsTable" xlink:to="us-gaap_IncomeTaxAuthorityNameAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityNameAxis" xlink:to="us-gaap_IncomeTaxAuthorityNameDomain" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityNameDomain" xlink:to="us-gaap_InternalRevenueServiceIRSMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsTable" xlink:to="us-gaap_IncomeTaxAuthorityAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityAxis" xlink:to="us-gaap_IncomeTaxAuthorityDomain" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityDomain" xlink:to="us-gaap_StateAndLocalJurisdictionMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MaximumMember_li0l2" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsTable" xlink:to="us-gaap_ValuationAllowancesAndReservesTypeAxis" order="10030.06" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:to="us-gaap_ValuationAllowancesAndReservesDomain" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ValuationAllowancesAndReservesDomain" xlink:to="us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsTable" xlink:to="wltw_LegislationAxis" order="10030.08" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_LegislationAxis" xlink:to="wltw_LegislationtypeDomain" order="10480.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_LegislationtypeDomain" xlink:to="wltw_TaxCutsandJobsActMember" order="10500.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsTable" xlink:to="wltw_LegislationaspectAxis" order="10030.10" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_LegislationaspectAxis" xlink:to="wltw_LegislationaspectDomain" order="10600.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_LegislationaspectDomain" xlink:to="wltw_OneTimeTransitionTaxMember" order="10620.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_LegislationaspectDomain" xlink:to="wltw_ExecutiveCompensationMember" order="10640.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsTable" xlink:to="wltw_LegislationsectionAxis" order="10030.12" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_LegislationsectionAxis" xlink:to="wltw_LegislationsectionDomain" order="10700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_LegislationsectionDomain" xlink:to="wltw_Section162mMember" order="10720.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityNameDomain" xlink:to="us-gaap_RevenueCommissionersIrelandMember" order="10800.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityDomain" xlink:to="us-gaap_DomesticCountryMember" order="10860.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityDomain" xlink:to="wltw_FederalAndForeignTaxAuthorityMember" order="10920.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsTable" xlink:to="srt_StatementGeographicalAxis" order="10030.14" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_StatementGeographicalAxis" xlink:to="srt_SegmentGeographicalDomain" order="11020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="country_US" order="11040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsTable" xlink:to="us-gaap_TaxPeriodAxis" order="10030.16" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TaxPeriodAxis" xlink:to="us-gaap_TaxPeriodDomain" order="11100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TaxPeriodDomain" xlink:to="wltw_TaxYear2019Through2038Member" order="11120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityNameDomain" xlink:to="us-gaap_HerMajestysRevenueAndCustomsHMRCMember" order="11260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityDomain" xlink:to="us-gaap_ForeignCountryMember" order="11320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsTable" xlink:to="us-gaap_TaxCreditCarryforwardAxis" order="10030.18" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TaxCreditCarryforwardAxis" xlink:to="us-gaap_TaxCreditCarryforwardNameDomain" order="11400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TaxCreditCarryforwardNameDomain" xlink:to="us-gaap_CapitalLossCarryforwardMember" order="11420.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsTable" xlink:to="us-gaap_NatureOfExpenseAxis" order="10030.20" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NatureOfExpenseAxis" xlink:to="us-gaap_InterimPeriodCostsNotAllocableDomain" order="11460.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_InterimPeriodCostsNotAllocableDomain" xlink:to="wltw_InternalRestructuringMember" order="11480.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsTable" xlink:to="us-gaap_OperatingLossCarryforwardsLineItems" order="11820.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" order="11830.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_GILTIDeductionRate" order="11870.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxLiability" order="11940.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalDeferredIncomeTaxBenefit" order="11960.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActOf2017CompleteAccountingChangeInTaxRateProvisionalAdditionalDeferredIncomeTaxBenefit" order="11980.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActOf2017IncompleteAccountingOneTimeTransitionTaxLiabilityForForeignSubsidiariesProvisionalIncomeTaxExpense" order="12030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActOf2017CompleteAccountingChangeInTaxRateOneTimeTransitionTaxLiabilityProvisionalIncomeTaxBenefit" order="12110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActCompleteAccountingAdditionalIncreaseToIncomeTaxExpense" order="12150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_PercentageOfImpactOnEffectiveTaxRate" order="12190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActIncompleteAccountingRepatriationOfForeignEarningsPreviouslyDeemedIndefinitelyReinvested" order="12260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActOf2017IncompleteAccountingRepatriationOfForeignEarningsProvisionalIncomeTaxExpenseBenefit" order="12280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActOf2017IncompleteAccountingProvisionalTransitionTaxForForeignEarningsProvisionalIncomeTaxExpenseBenefit" order="12300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_PercentageOfDividendsReceivedFromOwnedForeignCorporationsByUSCorporateShareholders" order="12320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActIncompleteAccountingBonusDepreciationProvisionalTaxDeduction" order="12370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActCompleteAccountingBonusDepreciationProvisionalTaxDeduction" order="12390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActIncompleteAccountingBonusDepreciationProvisionalIncreaseInNetDeferredTaxLiabilities" order="12410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActIncompleteAccountingBonusDepreciationProvisionalIncreaseInFederalCurrentIncomeTaxesReceivable" order="12430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActCompleteAccountingExecutiveCompensationDeductionLimit" order="12480.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActIncompleteAccountingExecutiveCompensationProvisionalIncomeTaxExpenseBenefit" order="12500.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActCompleteAccountingExecutiveCompensationIncomeTaxExpenseBenefit" order="12520.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActCompleteAccountingExecutiveCompensationMeasurementPeriodAdjustmentInEffectiveTaxRate" order="12540.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_IncomeTaxReconciliationGlobalIntangibleLowTaxedIncome" order="12590.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" order="12640.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_DeferredIncomeTaxExpenseBenefit" order="12690.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_IncomeTaxReconciliationOtherReconcilingItems" order="12740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_TaxCutsAndJobsActOf2017IncompleteAccountingChangeInFederalCorporateTaxRateAndRemeasurementOfDeferredTaxLiabilitiesRelatedToAcquisitionBasedIntangiblesProvisionalIncomeTaxBenefit" order="12760.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_DeferredTaxExpenseBenefitOnPotentialRepatriationAmountPreviouslyDeemedIndefinitelyReinvested" order="12780.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_OtherTaxExpenseBenefit" order="12800.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_Federalandstatetaxexpensebenefitonpotentialrepatriationamountpreviouslydeemedindefinitelyreinvested" order="12820.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_EffectiveIncomeTaxReconciliationForeignStatutoryIncomeTaxRate" order="12870.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" order="12990.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration" order="13010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration" order="13030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_DeferredTaxAssetsNet" order="13100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" order="13160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" order="13220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_DeferredTaxAssetsValuationAllowance" order="13310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_OperatingLossCarryforwardsValuationAllowance" order="13350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_Potentialrepatriationamountpreviouslydeemedindefinitelyreinvested" order="13690.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_Foreignwithholdingtaxesandstateincometaxesonpotentialrepatriationamountpreviouslydeemedindefinitelyreinvested" order="13710.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="wltw_AdditionalRepatriationAmountPreviouslyDeemedIndefinitelyReinvested" order="13780.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_IncomeTaxReconciliationRepatriationOfForeignEarnings" order="13800.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_UndistributedEarningsOfForeignSubsidiaries" order="13850.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_UnrecognizedTaxBenefits" order="13900.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible" order="13950.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued" order="14040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_IncomeTaxExaminationPenaltiesAccrued" order="14080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OperatingLossCarryforwardsLineItems" xlink:to="us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit" order="14150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesIncomeLossFromOperationsBeforeIncomeTaxesDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureIncomeTaxesIncomeLossFromOperationsBeforeIncomeTaxesDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesIncomeLossFromOperationsBeforeIncomeTaxesDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments"/>
<loc xlink:href="wltw-20181231.xsd#wltw_IncomeFromContinuingOperationsBeforeIncomeTaxesAndInterestInEarningsOfAssociatesLineItems" xlink:type="locator" xlink:label="wltw_IncomeFromContinuingOperationsBeforeIncomeTaxesAndInterestInEarningsOfAssociatesLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignCountryMember" xlink:type="locator" xlink:label="us-gaap_ForeignCountryMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticCountryMember" xlink:type="locator" xlink:label="us-gaap_DomesticCountryMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxAuthorityAxis" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherJurisdictionsMember" xlink:type="locator" xlink:label="wltw_OtherJurisdictionsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HerMajestysRevenueAndCustomsHMRCMember" xlink:type="locator" xlink:label="us-gaap_HerMajestysRevenueAndCustomsHMRCMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InternalRevenueServiceIRSMember" xlink:type="locator" xlink:label="us-gaap_InternalRevenueServiceIRSMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueCommissionersIrelandMember" xlink:type="locator" xlink:label="us-gaap_RevenueCommissionersIrelandMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxAuthorityNameDomain" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxAuthorityNameAxis" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityNameAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_IncomeFromContinuingOperationsBeforeIncomeTaxesAndInterestInEarningsOfAssociatesTable" xlink:type="locator" xlink:label="wltw_IncomeFromContinuingOperationsBeforeIncomeTaxesAndInterestInEarningsOfAssociatesTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeTaxDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="wltw_IncomeFromContinuingOperationsBeforeIncomeTaxesAndInterestInEarningsOfAssociatesTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_IncomeFromContinuingOperationsBeforeIncomeTaxesAndInterestInEarningsOfAssociatesTable" xlink:to="us-gaap_IncomeTaxAuthorityNameAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityNameAxis" xlink:to="us-gaap_IncomeTaxAuthorityNameDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityNameDomain" xlink:to="us-gaap_RevenueCommissionersIrelandMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityNameDomain" xlink:to="us-gaap_InternalRevenueServiceIRSMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityNameDomain" xlink:to="us-gaap_HerMajestysRevenueAndCustomsHMRCMember" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityNameDomain" xlink:to="wltw_OtherJurisdictionsMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_IncomeFromContinuingOperationsBeforeIncomeTaxesAndInterestInEarningsOfAssociatesTable" xlink:to="us-gaap_IncomeTaxAuthorityAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityAxis" xlink:to="us-gaap_IncomeTaxAuthorityDomain" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityDomain" xlink:to="us-gaap_DomesticCountryMember" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityDomain" xlink:to="us-gaap_ForeignCountryMember" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_IncomeFromContinuingOperationsBeforeIncomeTaxesAndInterestInEarningsOfAssociatesTable" xlink:to="wltw_IncomeFromContinuingOperationsBeforeIncomeTaxesAndInterestInEarningsOfAssociatesLineItems" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_IncomeFromContinuingOperationsBeforeIncomeTaxesAndInterestInEarningsOfAssociatesLineItems" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesProvisionForBenefitFromIncomeTaxesDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureIncomeTaxesProvisionForBenefitFromIncomeTaxesDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesProvisionForBenefitFromIncomeTaxesDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_IncomeTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DeferredOtherJurisdictionsTaxExpenseBenefit" xlink:type="locator" xlink:label="wltw_DeferredOtherJurisdictionsTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredForeignIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredForeignIncomeTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:type="locator" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CurrentOtherJurisdictionsTaxExpenseBenefit" xlink:type="locator" xlink:label="wltw_CurrentOtherJurisdictionsTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CurrentForeignTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_CurrentForeignTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:type="locator" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeTaxDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:to="us-gaap_CurrentFederalTaxExpenseBenefit" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:to="us-gaap_CurrentStateAndLocalTaxExpenseBenefit" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:to="us-gaap_CurrentForeignTaxExpenseBenefit" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:to="wltw_CurrentOtherJurisdictionsTaxExpenseBenefit" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:to="us-gaap_CurrentIncomeTaxExpenseBenefit" order="10470.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedTotalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract" order="10530.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:to="us-gaap_DeferredFederalIncomeTaxExpenseBenefit" order="10650.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:to="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" order="10710.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:to="us-gaap_DeferredForeignIncomeTaxExpenseBenefit" order="10770.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:to="wltw_DeferredOtherJurisdictionsTaxExpenseBenefit" order="10830.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:to="us-gaap_DeferredIncomeTaxExpenseBenefit" order="10890.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedTotalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:to="us-gaap_IncomeTaxExpenseBenefit" order="10950.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedTotalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesEffectiveTaxRateReconciliationDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureIncomeTaxesEffectiveTaxRateReconciliationDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesEffectiveTaxRateReconciliationDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_IncomeTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherAdjustments" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationOtherAdjustments"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationOtherReconcilingItems" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationOtherReconcilingItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_IncomeTaxReconciliationGlobalIntangibleLowTaxedIncome" xlink:type="locator" xlink:label="wltw_IncomeTaxReconciliationGlobalIntangibleLowTaxedIncome"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationDeductionsOther" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationDeductionsOther"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance"/>
<loc xlink:href="wltw-20181231.xsd#wltw_EffectiveIncomeTaxRateReconciliationNonDeductibleForeignExchangeLoss" xlink:type="locator" xlink:label="wltw_EffectiveIncomeTaxRateReconciliationNonDeductibleForeignExchangeLoss"/>
<loc xlink:href="wltw-20181231.xsd#wltw_EffectiveIncomeTaxRateReconciliationEffectOfForeignExchangeAndOtherDifferences" xlink:type="locator" xlink:label="wltw_EffectiveIncomeTaxRateReconciliationEffectOfForeignExchangeAndOtherDifferences"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationDispositionOfBusiness" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationDispositionOfBusiness"/>
<loc xlink:href="wltw-20181231.xsd#wltw_EffectiveIncomeTaxRateReconciliationNonDeductibleAcquisitionCosts" xlink:type="locator" xlink:label="wltw_EffectiveIncomeTaxRateReconciliationNonDeductibleAcquisitionCosts"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationNondeductibleExpense" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationNondeductibleExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" xlink:type="locator" xlink:label="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:type="locator" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeTaxDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" order="10150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" order="10210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate" order="10270.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxReconciliationNondeductibleExpense" order="10330.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="wltw_EffectiveIncomeTaxRateReconciliationNonDeductibleAcquisitionCosts" order="10390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxReconciliationDispositionOfBusiness" order="10450.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxReconciliationChangeInEnactedTaxRate" order="10510.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="wltw_EffectiveIncomeTaxRateReconciliationEffectOfForeignExchangeAndOtherDifferences" order="10570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="wltw_EffectiveIncomeTaxRateReconciliationNonDeductibleForeignExchangeLoss" order="10630.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance" order="10690.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxReconciliationDeductionsOther" order="10750.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential" order="10810.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes" order="10870.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="wltw_IncomeTaxReconciliationGlobalIntangibleLowTaxedIncome" order="10930.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxReconciliationOtherReconcilingItems" order="10990.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxReconciliationOtherAdjustments" order="11050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxExpenseBenefit" order="11110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedTotalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesDeferredTaxAssetsLiabilitiesDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureIncomeTaxesDeferredTaxAssetsLiabilitiesDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesDeferredTaxAssetsLiabilitiesDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredIncomeTaxLiabilities" xlink:type="locator" xlink:label="us-gaap_DeferredIncomeTaxLiabilities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilitiesTaxDeferredIncome" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesTaxDeferredIncome"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPrepaidExpenses" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesPrepaidExpenses"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:type="locator" xlink:label="us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsNet" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsGross" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsGross"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsDerivativeInstruments" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsDerivativeInstruments"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsCapitalLossCarryforwards" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsCapitalLossCarryforwards"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AccruedExpensesNotCurrentlyDeductible" xlink:type="locator" xlink:label="wltw_AccruedExpensesNotCurrentlyDeductible"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComponentsOfDeferredTaxAssetsAbstract" xlink:type="locator" xlink:label="us-gaap_ComponentsOfDeferredTaxAssetsAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeTaxDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_ComponentsOfDeferredTaxAssetsAbstract" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ComponentsOfDeferredTaxAssetsAbstract" xlink:to="wltw_AccruedExpensesNotCurrentlyDeductible" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ComponentsOfDeferredTaxAssetsAbstract" xlink:to="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ComponentsOfDeferredTaxAssetsAbstract" xlink:to="us-gaap_DeferredTaxAssetsCapitalLossCarryforwards" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ComponentsOfDeferredTaxAssetsAbstract" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ComponentsOfDeferredTaxAssetsAbstract" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits" order="10400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ComponentsOfDeferredTaxAssetsAbstract" xlink:to="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" order="10440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ComponentsOfDeferredTaxAssetsAbstract" xlink:to="us-gaap_DeferredTaxAssetsDerivativeInstruments" order="10480.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_DeferredTaxAssetsGross" order="10520.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_DeferredTaxAssetsValuationAllowance" order="10560.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_DeferredTaxAssetsNet" order="10600.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract" order="10640.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:to="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets" order="10720.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:to="us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment" order="10760.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:to="us-gaap_DeferredTaxLiabilitiesPrepaidExpenses" order="10800.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:to="us-gaap_DeferredTaxLiabilitiesTaxDeferredIncome" order="10840.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ComponentsOfDeferredTaxLiabilitiesAbstract" xlink:to="us-gaap_DeferredIncomeTaxLiabilities" order="10880.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_DeferredTaxLiabilities" order="10920.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesDeferredTaxLiabilitiesBalanceSheetClassificationDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureIncomeTaxesDeferredTaxLiabilitiesBalanceSheetClassificationDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesDeferredTaxLiabilitiesBalanceSheetClassificationDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilities" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilitiesGrossNoncurrent" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesGrossNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsNetNoncurrent" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsNetNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeTaxDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_DeferredTaxAssetsNetNoncurrent" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_DeferredTaxLiabilitiesGrossNoncurrent" order="10070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_DeferredTaxLiabilities" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesValuationAllowanceDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureIncomeTaxesValuationAllowanceDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesValuationAllowanceDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesBalance" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesBalance_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDeductions" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesDeductions"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesBalance" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesBalance"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MovementInValuationAllowancesAndReservesRollForward" xlink:type="locator" xlink:label="us-gaap_MovementInValuationAllowancesAndReservesRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:type="locator" xlink:label="srt_ValuationAndQualifyingAccountsDisclosureLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember" xlink:type="locator" xlink:label="us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesDomain" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:type="locator" xlink:label="us-gaap_ValuationAllowancesAndReservesTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ValuationAndQualifyingAccountsDisclosureTable" xlink:type="locator" xlink:label="srt_ValuationAndQualifyingAccountsDisclosureTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeTaxDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="srt_ValuationAndQualifyingAccountsDisclosureTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ValuationAndQualifyingAccountsDisclosureTable" xlink:to="us-gaap_ValuationAllowancesAndReservesTypeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ValuationAllowancesAndReservesTypeAxis" xlink:to="us-gaap_ValuationAllowancesAndReservesDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ValuationAllowancesAndReservesDomain" xlink:to="us-gaap_ValuationAllowanceOfDeferredTaxAssetsMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ValuationAndQualifyingAccountsDisclosureTable" xlink:to="srt_ValuationAndQualifyingAccountsDisclosureLineItems" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ValuationAndQualifyingAccountsDisclosureLineItems" xlink:to="us-gaap_MovementInValuationAllowancesAndReservesRollForward" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInValuationAllowancesAndReservesRollForward" xlink:to="us-gaap_ValuationAllowancesAndReservesBalance" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInValuationAllowancesAndReservesRollForward" xlink:to="us-gaap_ValuationAllowancesAndReservesChargedToCostAndExpense" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInValuationAllowancesAndReservesRollForward" xlink:to="us-gaap_ValuationAllowancesAndReservesChargedToOtherAccounts" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInValuationAllowancesAndReservesRollForward" xlink:to="us-gaap_ValuationAllowancesAndReservesDeductions" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInValuationAllowancesAndReservesRollForward" xlink:to="us-gaap_ValuationAllowancesAndReservesBalance_li0l2" order="10470.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesUnrecognizedTaxBenefitsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefits_li0l2"/>
<loc xlink:href="wltw-20181231.xsd#wltw_UnrecognizedTaxBenefitsOtherIncreaseDecrease" xlink:type="locator" xlink:label="wltw_UnrecognizedTaxBenefitsOtherIncreaseDecrease"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:type="locator" xlink:label="us-gaap_UnrecognizedTaxBenefits"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:type="locator" xlink:label="us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeTaxDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="us-gaap_UnrecognizedTaxBenefits" order="10130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition" order="10190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions" order="10250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities" order="10370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations" order="10430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions" order="10490.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="wltw_UnrecognizedTaxBenefitsOtherIncreaseDecrease" order="10550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward" xlink:to="us-gaap_UnrecognizedTaxBenefits_li0l2" order="10610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesSummaryOfTaxYearsThatRemainOpenToTaxExaminationInMajorTaxJurisdictionsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureIncomeTaxesSummaryOfTaxYearsThatRemainOpenToTaxExaminationInMajorTaxJurisdictionsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureIncomeTaxesSummaryOfTaxYearsThatRemainOpenToTaxExaminationInMajorTaxJurisdictionsDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_OpenTaxYears" xlink:type="locator" xlink:label="wltw_OpenTaxYears"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxContingencyLineItems" xlink:type="locator" xlink:label="us-gaap_IncomeTaxContingencyLineItems"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_CA" xlink:type="locator" xlink:label="country_CA"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_DE" xlink:type="locator" xlink:label="country_DE"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_FR" xlink:type="locator" xlink:label="country_FR"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_IE" xlink:type="locator" xlink:label="country_IE"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:type="locator" xlink:label="country_GB"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:type="locator" xlink:label="srt_SegmentGeographicalDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:type="locator" xlink:label="srt_StatementGeographicalAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignCountryMember" xlink:type="locator" xlink:label="us-gaap_ForeignCountryMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StateAndLocalJurisdictionMember" xlink:type="locator" xlink:label="us-gaap_StateAndLocalJurisdictionMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticCountryMember" xlink:type="locator" xlink:label="us-gaap_DomesticCountryMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxAuthorityNameDomain" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxAuthorityNameAxis" xlink:type="locator" xlink:label="us-gaap_IncomeTaxAuthorityNameAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxContingencyTable" xlink:type="locator" xlink:label="us-gaap_IncomeTaxContingencyTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_IncomeTaxDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxDisclosureAbstract" xlink:to="us-gaap_IncomeTaxContingencyTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxContingencyTable" xlink:to="us-gaap_IncomeTaxAuthorityNameAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityNameAxis" xlink:to="us-gaap_IncomeTaxAuthorityNameDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityNameDomain" xlink:to="us-gaap_DomesticCountryMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityNameDomain" xlink:to="us-gaap_StateAndLocalJurisdictionMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxAuthorityNameDomain" xlink:to="us-gaap_ForeignCountryMember" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxContingencyTable" xlink:to="srt_StatementGeographicalAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_StatementGeographicalAxis" xlink:to="srt_SegmentGeographicalDomain" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="country_GB" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="country_IE" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="country_FR" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="country_DE" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_SegmentGeographicalDomain" xlink:to="country_CA" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxContingencyTable" xlink:to="us-gaap_IncomeTaxContingencyLineItems" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeTaxContingencyLineItems" xlink:to="wltw_OpenTaxYears" order="10370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFixedAssetsComponentsOfFixedAssetsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureFixedAssetsComponentsOfFixedAssetsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFixedAssetsComponentsOfFixedAssetsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationIntegrationRelatedCosts" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationIntegrationRelatedCosts"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:type="locator" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_li0l2"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AccumulatedDepreciationDepletionAndAmortizationForeignExchange" xlink:type="locator" xlink:label="wltw_AccumulatedDepreciationDepletionAndAmortizationForeignExchange"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationReclassificationsFromPropertyPlantAndEquipment1" xlink:type="locator" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationReclassificationsFromPropertyPlantAndEquipment1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment1" xlink:type="locator" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Depreciation" xlink:type="locator" xlink:label="us-gaap_Depreciation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:type="locator" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MovementInAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentRollForward" xlink:type="locator" xlink:label="us-gaap_MovementInAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_li0l2"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PropertyPlantAndEquipmentIncreaseDecreaseDueToForeignExchange" xlink:type="locator" xlink:label="wltw_PropertyPlantAndEquipmentIncreaseDecreaseDueToForeignExchange"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ReclassificationOfPropertyPlantAndEquipment" xlink:type="locator" xlink:label="wltw_ReclassificationOfPropertyPlantAndEquipment"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDisposals" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentDisposals"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAdditions" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentAdditions"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentGross"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MovementInPropertyPlantAndEquipmentRollForward" xlink:type="locator" xlink:label="us-gaap_MovementInPropertyPlantAndEquipmentRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TransactionAndIntegrationExpensesMember" xlink:type="locator" xlink:label="wltw_TransactionAndIntegrationExpensesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:type="locator" xlink:label="us-gaap_IncomeStatementLocationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:type="locator" xlink:label="us-gaap_IncomeStatementLocationAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LandAndBuildingMember" xlink:type="locator" xlink:label="us-gaap_LandAndBuildingMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeaseholdImprovementsMember" xlink:type="locator" xlink:label="us-gaap_LeaseholdImprovementsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FurnitureAndFixturesMember" xlink:type="locator" xlink:label="us-gaap_FurnitureAndFixturesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentAbstract" xlink:to="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="us-gaap_PropertyPlantAndEquipmentByTypeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:to="us-gaap_PropertyPlantAndEquipmentTypeDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_FurnitureAndFixturesMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_LeaseholdImprovementsMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_LandAndBuildingMember" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="us-gaap_IncomeStatementLocationAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementLocationAxis" xlink:to="us-gaap_IncomeStatementLocationDomain" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementLocationDomain" xlink:to="wltw_TransactionAndIntegrationExpensesMember" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="us-gaap_PropertyPlantAndEquipmentLineItems" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_MovementInPropertyPlantAndEquipmentRollForward" order="10210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInPropertyPlantAndEquipmentRollForward" xlink:to="us-gaap_PropertyPlantAndEquipmentGross" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInPropertyPlantAndEquipmentRollForward" xlink:to="us-gaap_PropertyPlantAndEquipmentAdditions" order="10510.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInPropertyPlantAndEquipmentRollForward" xlink:to="us-gaap_PropertyPlantAndEquipmentDisposals" order="10610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInPropertyPlantAndEquipmentRollForward" xlink:to="wltw_ReclassificationOfPropertyPlantAndEquipment" order="10710.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInPropertyPlantAndEquipmentRollForward" xlink:to="wltw_PropertyPlantAndEquipmentIncreaseDecreaseDueToForeignExchange" order="10810.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInPropertyPlantAndEquipmentRollForward" xlink:to="us-gaap_PropertyPlantAndEquipmentGross_li0l2" order="11110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_MovementInAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentRollForward" order="11710.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentRollForward" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" order="11910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedPeriodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentRollForward" xlink:to="us-gaap_Depreciation" order="12010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentRollForward" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment1" order="12110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentRollForward" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationReclassificationsFromPropertyPlantAndEquipment1" order="12210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentRollForward" xlink:to="wltw_AccumulatedDepreciationDepletionAndAmortizationForeignExchange" order="12310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MovementInAccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipmentRollForward" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_li0l2" order="12610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedPeriodEndLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_PropertyPlantAndEquipmentNet" order="13210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_BusinessCombinationIntegrationRelatedCosts" order="13520.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFixedAssetsAssetsHeldUnderCapitalLeasesDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureFixedAssetsAssetsHeldUnderCapitalLeasesDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFixedAssetsAssetsHeldUnderCapitalLeasesDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:type="locator" xlink:label="us-gaap_DepreciationDepletionAndAmortization"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet" xlink:type="locator" xlink:label="us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation" xlink:type="locator" xlink:label="us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLeasedAssetsGross" xlink:type="locator" xlink:label="us-gaap_CapitalLeasedAssetsGross"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsHeldUnderCapitalLeasesMember" xlink:type="locator" xlink:label="us-gaap_AssetsHeldUnderCapitalLeasesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentAbstract" xlink:to="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" order="10040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="us-gaap_PropertyPlantAndEquipmentByTypeAxis" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:to="us-gaap_PropertyPlantAndEquipmentTypeDomain" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_AssetsHeldUnderCapitalLeasesMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:to="us-gaap_PropertyPlantAndEquipmentLineItems" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_CapitalLeasedAssetsGross" order="10130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet" order="10210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PropertyPlantAndEquipmentLineItems" xlink:to="us-gaap_DepreciationDepletionAndAmortization" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsComponentsOfGoodwillDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureGoodwillAndOtherIntangibleAssetsComponentsOfGoodwillDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsComponentsOfGoodwillDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:type="locator" xlink:label="us-gaap_Goodwill_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:type="locator" xlink:label="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillGross" xlink:type="locator" xlink:label="us-gaap_GoodwillGross_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillForeignCurrencyTranslationGainLoss" xlink:type="locator" xlink:label="us-gaap_GoodwillForeignCurrencyTranslationGainLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit" xlink:type="locator" xlink:label="us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAcquiredDuringPeriod" xlink:type="locator" xlink:label="us-gaap_GoodwillAcquiredDuringPeriod"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillTransfers" xlink:type="locator" xlink:label="us-gaap_GoodwillTransfers"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:type="locator" xlink:label="us-gaap_Goodwill"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:type="locator" xlink:label="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillGross" xlink:type="locator" xlink:label="us-gaap_GoodwillGross"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillRollForward" xlink:type="locator" xlink:label="us-gaap_GoodwillRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillLineItems" xlink:type="locator" xlink:label="us-gaap_GoodwillLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BenefitsDeliveryAndAdministrationMember" xlink:type="locator" xlink:label="wltw_BenefitsDeliveryAndAdministrationMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_InvestmentRiskAndReinsuranceMember" xlink:type="locator" xlink:label="wltw_InvestmentRiskAndReinsuranceMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CorporateRiskAndBrokingMember" xlink:type="locator" xlink:label="wltw_CorporateRiskAndBrokingMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_HumanCapitalAndBenefitsMember" xlink:type="locator" xlink:label="wltw_HumanCapitalAndBenefitsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentDomain" xlink:type="locator" xlink:label="us-gaap_SegmentDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementBusinessSegmentsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfGoodwillTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:to="us-gaap_ScheduleOfGoodwillTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfGoodwillTable" xlink:to="us-gaap_StatementBusinessSegmentsAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementBusinessSegmentsAxis" xlink:to="us-gaap_SegmentDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_HumanCapitalAndBenefitsMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_CorporateRiskAndBrokingMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_InvestmentRiskAndReinsuranceMember" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SegmentDomain" xlink:to="wltw_BenefitsDeliveryAndAdministrationMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfGoodwillTable" xlink:to="us-gaap_GoodwillLineItems" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillLineItems" xlink:to="us-gaap_GoodwillRollForward" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillRollForward" xlink:to="us-gaap_GoodwillGross" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillRollForward" xlink:to="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" order="10530.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedPeriodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillRollForward" xlink:to="us-gaap_Goodwill" order="10650.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillRollForward" xlink:to="us-gaap_GoodwillTransfers" order="10770.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillRollForward" xlink:to="us-gaap_GoodwillAcquiredDuringPeriod" order="10890.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillRollForward" xlink:to="us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit" order="11010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillRollForward" xlink:to="us-gaap_GoodwillForeignCurrencyTranslationGainLoss" order="11130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillRollForward" xlink:to="us-gaap_GoodwillGross_li0l2" order="11250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillRollForward" xlink:to="us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_li0l2" order="11370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedPeriodEndLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillRollForward" xlink:to="us-gaap_Goodwill_li0l2" order="11490.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsFiniteLivedIntangibleAssetsAndLiabilitiesDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureGoodwillAndOtherIntangibleAssetsFiniteLivedIntangibleAssetsAndLiabilitiesDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsFiniteLivedIntangibleAssetsAndLiabilitiesDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BelowMarketLeaseAccumulatedAmortization" xlink:type="locator" xlink:label="us-gaap_BelowMarketLeaseAccumulatedAmortization"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BelowMarketLeaseGross" xlink:type="locator" xlink:label="us-gaap_BelowMarketLeaseGross"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:type="locator" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AmortizationOfIntangibleAssetsIncludingOffMarketLeases" xlink:type="locator" xlink:label="wltw_AmortizationOfIntangibleAssetsIncludingOffMarketLeases"/>
<loc xlink:href="wltw-20181231.xsd#wltw_FiniteLivedIntangibleAssetsDisposed" xlink:type="locator" xlink:label="wltw_FiniteLivedIntangibleAssetsDisposed"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FinitelivedIntangibleAssetsAcquired1" xlink:type="locator" xlink:label="us-gaap_FinitelivedIntangibleAssetsAcquired1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsRollForward" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AboveMarketLeasesMember" xlink:type="locator" xlink:label="us-gaap_AboveMarketLeasesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InProcessResearchAndDevelopmentMember" xlink:type="locator" xlink:label="us-gaap_InProcessResearchAndDevelopmentMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:type="locator" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:type="locator" xlink:label="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherIntangibleAssetsMember" xlink:type="locator" xlink:label="us-gaap_OtherIntangibleAssetsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OffMarketFavorableLeaseMember" xlink:type="locator" xlink:label="us-gaap_OffMarketFavorableLeaseMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TradeSecretsMember" xlink:type="locator" xlink:label="us-gaap_TradeSecretsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TrademarksAndTradeNamesMember" xlink:type="locator" xlink:label="us-gaap_TrademarksAndTradeNamesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SoftwareAndSoftwareDevelopmentCostsMember" xlink:type="locator" xlink:label="us-gaap_SoftwareAndSoftwareDevelopmentCostsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CustomerContractsMember" xlink:type="locator" xlink:label="us-gaap_CustomerContractsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:type="locator" xlink:label="us-gaap_CustomerRelationshipsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:to="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:to="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_CustomerRelationshipsMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_CustomerContractsMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_SoftwareAndSoftwareDevelopmentCostsMember" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_TrademarksAndTradeNamesMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_TradeSecretsMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_OffMarketFavorableLeaseMember" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_OtherIntangibleAssetsMember" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:to="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IndefiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" order="10420.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IndefiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_InProcessResearchAndDevelopmentMember" order="10440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_AboveMarketLeasesMember" order="10680.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:to="us-gaap_FiniteLivedIntangibleAssetsLineItems" order="10700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:to="us-gaap_FiniteLivedIntangibleAssetsRollForward" order="10710.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsRollForward" xlink:to="us-gaap_FiniteLivedIntangibleAssetsNet" order="11070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsRollForward" xlink:to="us-gaap_FinitelivedIntangibleAssetsAcquired1" order="11250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsRollForward" xlink:to="wltw_FiniteLivedIntangibleAssetsDisposed" order="11430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsRollForward" xlink:to="wltw_AmortizationOfIntangibleAssetsIncludingOffMarketLeases" order="11610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsRollForward" xlink:to="us-gaap_FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss" order="11790.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsRollForward" xlink:to="us-gaap_FiniteLivedIntangibleAssetsNet_li0l2" order="11970.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:to="us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" order="13650.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsRollForward" xlink:to="us-gaap_FiniteLivedIntangibleAssetsGross" order="13720.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsRollForward" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" order="13960.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:to="us-gaap_BelowMarketLeaseGross" order="15190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:to="us-gaap_BelowMarketLeaseAccumulatedAmortization" order="15430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsNarrativeDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetUsefulLife"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BelowMarketLeaseNet" xlink:type="locator" xlink:label="us-gaap_BelowMarketLeaseNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:type="locator" xlink:label="us-gaap_AmortizationOfIntangibleAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsRollForward" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:to="us-gaap_FiniteLivedIntangibleAssetsRollForward" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsRollForward" xlink:to="us-gaap_AmortizationOfIntangibleAssets" order="10130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:to="us-gaap_BelowMarketLeaseNet" order="10190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:to="us-gaap_FiniteLivedIntangibleAssetUsefulLife" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfFutureAmortizationExpenseAndRentOffsetDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfFutureAmortizationExpenseAndRentOffsetDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureGoodwillAndOtherIntangibleAssetsScheduleOfFutureAmortizationExpenseAndRentOffsetDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_AboveBelowMarketLeaseNet" xlink:type="locator" xlink:label="wltw_AboveBelowMarketLeaseNet"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AmortizationOfAboveAndBelowMarketLeasesAfterYearFive" xlink:type="locator" xlink:label="wltw_AmortizationOfAboveAndBelowMarketLeasesAfterYearFive"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AmortizationOfAboveAndBelowMarketLeasesYearFive" xlink:type="locator" xlink:label="wltw_AmortizationOfAboveAndBelowMarketLeasesYearFive"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AmortizationOfAboveAndBelowMarketLeasesYearFour" xlink:type="locator" xlink:label="wltw_AmortizationOfAboveAndBelowMarketLeasesYearFour"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AmortizationOfAboveAndBelowMarketLeasesYearThree" xlink:type="locator" xlink:label="wltw_AmortizationOfAboveAndBelowMarketLeasesYearThree"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AmortizationOfAboveAndBelowMarketLeasesYearTwo" xlink:type="locator" xlink:label="wltw_AmortizationOfAboveAndBelowMarketLeasesYearTwo"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AmortizationOfAboveAndBelowMarketLeasesNextFiscalYear" xlink:type="locator" xlink:label="wltw_AmortizationOfAboveAndBelowMarketLeasesNextFiscalYear"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BelowMarketLeaseAmortizationIncomeMaturityScheduleAbstract" xlink:type="locator" xlink:label="us-gaap_BelowMarketLeaseAmortizationIncomeMaturityScheduleAbstract"/>
<loc xlink:href="wltw-20181231.xsd#wltw_FiniteLivedIntangibleAssetsNetExcludingAboveAndBelowMarketLeases" xlink:type="locator" xlink:label="wltw_FiniteLivedIntangibleAssetsNetExcludingAboveAndBelowMarketLeases"/>
<loc xlink:href="wltw-20181231.xsd#wltw_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFiveExcludingAboveAndBelowMarketLeases" xlink:type="locator" xlink:label="wltw_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFiveExcludingAboveAndBelowMarketLeases"/>
<loc xlink:href="wltw-20181231.xsd#wltw_FiniteLivedIntangibleAssetsAmortizationExpenseYearFiveExcludingAboveAndBelowMarketLeases" xlink:type="locator" xlink:label="wltw_FiniteLivedIntangibleAssetsAmortizationExpenseYearFiveExcludingAboveAndBelowMarketLeases"/>
<loc xlink:href="wltw-20181231.xsd#wltw_FiniteLivedIntangibleAssetsAmortizationExpenseYearFourExcludingAboveAndBelowMarketLeases" xlink:type="locator" xlink:label="wltw_FiniteLivedIntangibleAssetsAmortizationExpenseYearFourExcludingAboveAndBelowMarketLeases"/>
<loc xlink:href="wltw-20181231.xsd#wltw_FiniteLivedIntangibleAssetsAmortizationExpenseYearThreeExcludingAboveAndBelowMarketLeases" xlink:type="locator" xlink:label="wltw_FiniteLivedIntangibleAssetsAmortizationExpenseYearThreeExcludingAboveAndBelowMarketLeases"/>
<loc xlink:href="wltw-20181231.xsd#wltw_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwoExcludingAboveAndBelowMarketLeases" xlink:type="locator" xlink:label="wltw_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwoExcludingAboveAndBelowMarketLeases"/>
<loc xlink:href="wltw-20181231.xsd#wltw_FiniteLivedIntangibleAssetsAmortizationExpenseNextFiscalYearExcludingAboveAndBelowMarketLeases" xlink:type="locator" xlink:label="wltw_FiniteLivedIntangibleAssetsAmortizationExpenseNextFiscalYearExcludingAboveAndBelowMarketLeases"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract" xlink:type="locator" xlink:label="us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:to="us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract" order="10130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract" xlink:to="wltw_FiniteLivedIntangibleAssetsAmortizationExpenseNextFiscalYearExcludingAboveAndBelowMarketLeases" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract" xlink:to="wltw_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwoExcludingAboveAndBelowMarketLeases" order="10190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract" xlink:to="wltw_FiniteLivedIntangibleAssetsAmortizationExpenseYearThreeExcludingAboveAndBelowMarketLeases" order="10210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract" xlink:to="wltw_FiniteLivedIntangibleAssetsAmortizationExpenseYearFourExcludingAboveAndBelowMarketLeases" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract" xlink:to="wltw_FiniteLivedIntangibleAssetsAmortizationExpenseYearFiveExcludingAboveAndBelowMarketLeases" order="10250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract" xlink:to="wltw_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFiveExcludingAboveAndBelowMarketLeases" order="10270.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseCurrentAndFiveSucceedingFiscalYearsAbstract" xlink:to="wltw_FiniteLivedIntangibleAssetsNetExcludingAboveAndBelowMarketLeases" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:to="us-gaap_BelowMarketLeaseAmortizationIncomeMaturityScheduleAbstract" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BelowMarketLeaseAmortizationIncomeMaturityScheduleAbstract" xlink:to="wltw_AmortizationOfAboveAndBelowMarketLeasesNextFiscalYear" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BelowMarketLeaseAmortizationIncomeMaturityScheduleAbstract" xlink:to="wltw_AmortizationOfAboveAndBelowMarketLeasesYearTwo" order="10370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BelowMarketLeaseAmortizationIncomeMaturityScheduleAbstract" xlink:to="wltw_AmortizationOfAboveAndBelowMarketLeasesYearThree" order="10390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BelowMarketLeaseAmortizationIncomeMaturityScheduleAbstract" xlink:to="wltw_AmortizationOfAboveAndBelowMarketLeasesYearFour" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BelowMarketLeaseAmortizationIncomeMaturityScheduleAbstract" xlink:to="wltw_AmortizationOfAboveAndBelowMarketLeasesYearFive" order="10430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BelowMarketLeaseAmortizationIncomeMaturityScheduleAbstract" xlink:to="wltw_AmortizationOfAboveAndBelowMarketLeasesAfterYearFive" order="10450.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BelowMarketLeaseAmortizationIncomeMaturityScheduleAbstract" xlink:to="wltw_AboveBelowMarketLeaseNet" order="10470.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedTotalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDerivativeFinancialInstrumentsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureDerivativeFinancialInstrumentsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDerivativeFinancialInstrumentsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet" xlink:type="locator" xlink:label="us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeAssets" xlink:type="locator" xlink:label="us-gaap_DerivativeAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet" xlink:type="locator" xlink:label="us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:type="locator" xlink:label="us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeRemainingMaturity1" xlink:type="locator" xlink:label="us-gaap_DerivativeRemainingMaturity1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred" xlink:type="locator" xlink:label="us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:type="locator" xlink:label="us-gaap_DerivativeLiabilities"/>
<loc xlink:href="https://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_DerivativeNotionalAmount" xlink:type="locator" xlink:label="invest_DerivativeNotionalAmount"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeLineItems" xlink:type="locator" xlink:label="us-gaap_DerivativeLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherExpenseMember" xlink:type="locator" xlink:label="us-gaap_OtherExpenseMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:type="locator" xlink:label="us-gaap_IncomeStatementLocationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:type="locator" xlink:label="us-gaap_IncomeStatementLocationAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NondesignatedMember" xlink:type="locator" xlink:label="us-gaap_NondesignatedMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:type="locator" xlink:label="srt_MinimumMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:type="locator" xlink:label="srt_MaximumMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:type="locator" xlink:label="srt_RangeMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:type="locator" xlink:label="srt_RangeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignExchangeContractMember" xlink:type="locator" xlink:label="us-gaap_ForeignExchangeContractMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestRateSwapMember" xlink:type="locator" xlink:label="us-gaap_InterestRateSwapMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:type="locator" xlink:label="us-gaap_DerivativeContractTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:type="locator" xlink:label="us-gaap_DerivativeInstrumentRiskAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:type="locator" xlink:label="us-gaap_DesignatedAsHedgingInstrumentMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:type="locator" xlink:label="us-gaap_HedgingDesignationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:type="locator" xlink:label="us-gaap_HedgingDesignationAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashFlowHedgingMember" xlink:type="locator" xlink:label="us-gaap_CashFlowHedgingMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HedgingRelationshipDomain" xlink:type="locator" xlink:label="us-gaap_HedgingRelationshipDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis" xlink:type="locator" xlink:label="us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeTable" xlink:type="locator" xlink:label="us-gaap_DerivativeTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract" xlink:to="us-gaap_DerivativeTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeTable" xlink:to="us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis" xlink:to="us-gaap_HedgingRelationshipDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_HedgingRelationshipDomain" xlink:to="us-gaap_CashFlowHedgingMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeTable" xlink:to="us-gaap_HedgingDesignationAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_HedgingDesignationAxis" xlink:to="us-gaap_HedgingDesignationDomain" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_HedgingDesignationDomain" xlink:to="us-gaap_DesignatedAsHedgingInstrumentMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeTable" xlink:to="us-gaap_DerivativeInstrumentRiskAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeInstrumentRiskAxis" xlink:to="us-gaap_DerivativeContractTypeDomain" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeContractTypeDomain" xlink:to="us-gaap_InterestRateSwapMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeContractTypeDomain" xlink:to="us-gaap_ForeignExchangeContractMember" order="10480.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeTable" xlink:to="srt_RangeAxis" order="10030.06" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeAxis" xlink:to="srt_RangeMember" order="10540.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MaximumMember" order="10560.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MinimumMember" order="10580.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_HedgingDesignationDomain" xlink:to="us-gaap_NondesignatedMember" order="11300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeTable" xlink:to="us-gaap_IncomeStatementLocationAxis" order="10030.08" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementLocationAxis" xlink:to="us-gaap_IncomeStatementLocationDomain" order="11440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_IncomeStatementLocationDomain" xlink:to="us-gaap_OtherExpenseMember" order="11460.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeTable" xlink:to="us-gaap_DerivativeLineItems" order="11600.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeLineItems" xlink:to="invest_DerivativeNotionalAmount" order="11610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeLineItems" xlink:to="us-gaap_DerivativeLiabilities" order="11630.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeLineItems" xlink:to="us-gaap_DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred" order="11760.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeLineItems" xlink:to="us-gaap_DerivativeRemainingMaturity1" order="11800.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeLineItems" xlink:to="us-gaap_OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax" order="11870.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeLineItems" xlink:to="us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" order="12050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeLineItems" xlink:to="us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet" order="12230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeLineItems" xlink:to="us-gaap_DerivativeAssets" order="12480.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DerivativeLineItems" xlink:to="us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet" order="12550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDebtScheduleOfLongTermDebtDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureDebtScheduleOfLongTermDebtDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDebtScheduleOfLongTermDebtDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_DebtInstrumentMaturityYear" xlink:type="locator" xlink:label="wltw_DebtInstrumentMaturityYear"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:type="locator" xlink:label="us-gaap_LongTermDebtNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtCurrent" xlink:type="locator" xlink:label="us-gaap_DebtCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:type="locator" xlink:label="us-gaap_RevolvingCreditFacilityMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:type="locator" xlink:label="us-gaap_CreditFacilityDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:type="locator" xlink:label="us-gaap_CreditFacilityAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue20480505Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue20480505Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue204306125Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue204306125Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue2028045Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue2028045Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue202604400Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue202604400Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue202403600Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue202403600Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue202304625Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue202304625Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue202202125Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue202202125Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue202103500Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue202103500Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue202105750Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue202105750Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_Revolving125BillionDollarCreditFacilityMember" xlink:type="locator" xlink:label="wltw_Revolving125BillionDollarCreditFacilityMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TermLoanDueDecember2019Member" xlink:type="locator" xlink:label="wltw_TermLoanDueDecember2019Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue20190700Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue20190700Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_DebtDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_DebtInstrumentTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentNameDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue20190700Member" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_TermLoanDueDecember2019Member" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_Revolving125BillionDollarCreditFacilityMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue202105750Member" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue202103500Member" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue202202125Member" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue202304625Member" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue202403600Member" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue202604400Member" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue2028045Member" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue204306125Member" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue20480505Member" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_CreditFacilityAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CreditFacilityAxis" xlink:to="us-gaap_CreditFacilityDomain" order="10420.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="us-gaap_RevolvingCreditFacilityMember" order="10440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentLineItems" order="10840.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtCurrent" order="10850.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LongTermDebtNoncurrent" order="11000.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" order="11550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage" order="11850.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="wltw_DebtInstrumentMaturityYear" order="12150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDebtNarrativeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureDebtNarrativeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDebtNarrativeDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_DebtInstrumentRepaymentMonthAndYear" xlink:type="locator" xlink:label="wltw_DebtInstrumentRepaymentMonthAndYear"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromLinesOfCredit" xlink:type="locator" xlink:label="us-gaap_ProceedsFromLinesOfCredit"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DebtInstrumentNumberofTranches" xlink:type="locator" xlink:label="wltw_DebtInstrumentNumberofTranches"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentPeriodicPayment" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentPeriodicPayment"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentCreditRating" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentCreditRating"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentTerm"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepaymentsOfLinesOfCredit" xlink:type="locator" xlink:label="us-gaap_RepaymentsOfLinesOfCredit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:type="locator" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ExtinguishmentOfDebtAmount" xlink:type="locator" xlink:label="us-gaap_ExtinguishmentOfDebtAmount"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromDebtNetOfIssuanceCosts" xlink:type="locator" xlink:label="us-gaap_ProceedsFromDebtNetOfIssuanceCosts"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DebtInstrumentInterestAccrualDateDescription" xlink:type="locator" xlink:label="wltw_DebtInstrumentInterestAccrualDateDescription"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentMaturityDate" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentMaturityDate"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentFaceAmount"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepaymentsOfDebt" xlink:type="locator" xlink:label="us-gaap_RepaymentsOfDebt"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCredit" xlink:type="locator" xlink:label="us-gaap_LineOfCredit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityExpirationDate1" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityExpirationDate1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OneYearTermLoanFacilityDue2016TrancheOneMember" xlink:type="locator" xlink:label="wltw_OneYearTermLoanFacilityDue2016TrancheOneMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SevenYearTermLoanFacilityDue2018Member" xlink:type="locator" xlink:label="wltw_SevenYearTermLoanFacilityDue2018Member"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MoodysBaa3RatingMember" xlink:type="locator" xlink:label="srt_MoodysBaa3RatingMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ExternalCreditRatingMoodysMember" xlink:type="locator" xlink:label="srt_ExternalCreditRatingMoodysMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CreditRatingMoodysAxis" xlink:type="locator" xlink:label="srt_CreditRatingMoodysAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StandardPoorsBBBRatingMember" xlink:type="locator" xlink:label="srt_StandardPoorsBBBRatingMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ExternalCreditRatingStandardPoorsMember" xlink:type="locator" xlink:label="srt_ExternalCreditRatingStandardPoorsMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CreditRatingStandardPoorsAxis" xlink:type="locator" xlink:label="srt_CreditRatingStandardPoorsAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_WSIRevolvingCreditFacilityMember" xlink:type="locator" xlink:label="wltw_WSIRevolvingCreditFacilityMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NotesPayableToBanksMember" xlink:type="locator" xlink:label="us-gaap_NotesPayableToBanksMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:type="locator" xlink:label="us-gaap_ShortTermDebtTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:type="locator" xlink:label="us-gaap_ShortTermDebtTypeAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OneYearTermLoanFacilityDue2016Member" xlink:type="locator" xlink:label="wltw_OneYearTermLoanFacilityDue2016Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OneYearTermLoanFacilityDue2016TrancheTwoMember" xlink:type="locator" xlink:label="wltw_OneYearTermLoanFacilityDue2016TrancheTwoMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue2016Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue2016Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_Revolving800MillionDollarCreditFacilityMember" xlink:type="locator" xlink:label="wltw_Revolving800MillionDollarCreditFacilityMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue2021and2026Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue2021and2026Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TrinityAcquisitionPlcMember" xlink:type="locator" xlink:label="wltw_TrinityAcquisitionPlcMember"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:type="locator" xlink:label="dei_EntityDomain"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:type="locator" xlink:label="dei_LegalEntityAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_A3600seniornotesdue2024Member" xlink:type="locator" xlink:label="wltw_A3600seniornotesdue2024Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TermLoanDueDecember2019Member" xlink:type="locator" xlink:label="wltw_TermLoanDueDecember2019Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue2017062Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue2017062Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SeniorNotesMember" xlink:type="locator" xlink:label="us-gaap_SeniorNotesMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:type="locator" xlink:label="srt_MaximumMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:type="locator" xlink:label="srt_MinimumMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:type="locator" xlink:label="srt_RangeMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:type="locator" xlink:label="srt_RangeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BaseRateMember" xlink:type="locator" xlink:label="us-gaap_BaseRateMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:type="locator" xlink:label="us-gaap_LondonInterbankOfferedRateLIBORMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableRateDomain" xlink:type="locator" xlink:label="us-gaap_VariableRateDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableRateAxis" xlink:type="locator" xlink:label="us-gaap_VariableRateAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:type="locator" xlink:label="us-gaap_RevolvingCreditFacilityMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:type="locator" xlink:label="us-gaap_CreditFacilityDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:type="locator" xlink:label="us-gaap_CreditFacilityAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_Revolving800MillionCreditFacilityMember" xlink:type="locator" xlink:label="wltw_Revolving800MillionCreditFacilityMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_Revolving125BillionDollarCreditFacilityMember" xlink:type="locator" xlink:label="wltw_Revolving125BillionDollarCreditFacilityMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditMember" xlink:type="locator" xlink:label="us-gaap_LineOfCreditMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:type="locator" xlink:label="us-gaap_LongtermDebtTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:type="locator" xlink:label="us-gaap_LongtermDebtTypeAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue202202125Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue202202125Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue202604400Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue202604400Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue202103500Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue202103500Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue204306125Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue204306125Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue202304625Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue202304625Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue20480505Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue20480505Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue2028045Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue2028045Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue202403600Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue202403600Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue20190700Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue20190700Member"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SeniorNotesDue202105750Member" xlink:type="locator" xlink:label="wltw_SeniorNotesDue202105750Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_DebtDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_DebtInstrumentTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentNameDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue202105750Member" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue20190700Member" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue202403600Member" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue2028045Member" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue20480505Member" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue202304625Member" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue204306125Member" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue202103500Member" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue202604400Member" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue202202125Member" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_LongtermDebtTypeAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LongtermDebtTypeAxis" xlink:to="us-gaap_LongtermDebtTypeDomain" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_LineOfCreditMember" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_Revolving125BillionDollarCreditFacilityMember" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_Revolving800MillionCreditFacilityMember" order="10400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_CreditFacilityAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CreditFacilityAxis" xlink:to="us-gaap_CreditFacilityDomain" order="10520.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="us-gaap_RevolvingCreditFacilityMember" order="10540.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_VariableRateAxis" order="10030.06" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_VariableRateAxis" xlink:to="us-gaap_VariableRateDomain" order="10580.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_VariableRateDomain" xlink:to="us-gaap_LondonInterbankOfferedRateLIBORMember" order="10600.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_VariableRateDomain" xlink:to="us-gaap_BaseRateMember" order="10640.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="srt_RangeAxis" order="10030.08" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeAxis" xlink:to="srt_RangeMember" order="10700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MinimumMember" order="10720.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MaximumMember" order="10740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_SeniorNotesMember" order="11140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue2017062Member" order="11200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="wltw_TermLoanDueDecember2019Member" order="11340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_A3600seniornotesdue2024Member" order="11460.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="dei_LegalEntityAxis" order="10030.10" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="11640.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_TrinityAcquisitionPlcMember" order="11660.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue2021and2026Member" order="11880.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_Revolving800MillionDollarCreditFacilityMember" order="11900.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SeniorNotesDue2016Member" order="11920.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_OneYearTermLoanFacilityDue2016TrancheTwoMember" order="11940.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_OneYearTermLoanFacilityDue2016Member" order="11960.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="us-gaap_LineOfCreditMember" order="12040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_ShortTermDebtTypeAxis" order="10030.12" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShortTermDebtTypeAxis" xlink:to="us-gaap_ShortTermDebtTypeDomain" order="12100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShortTermDebtTypeDomain" xlink:to="us-gaap_SeniorNotesMember" order="12120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShortTermDebtTypeDomain" xlink:to="us-gaap_NotesPayableToBanksMember" order="12140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_NotesPayableToBanksMember" order="13020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_TermLoanDueDecember2019Member" order="13160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_WSIRevolvingCreditFacilityMember" order="13780.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="srt_CreditRatingStandardPoorsAxis" order="10030.14" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CreditRatingStandardPoorsAxis" xlink:to="srt_ExternalCreditRatingStandardPoorsMember" order="13820.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ExternalCreditRatingStandardPoorsMember" xlink:to="srt_StandardPoorsBBBRatingMember" order="13840.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="srt_CreditRatingMoodysAxis" order="10030.16" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CreditRatingMoodysAxis" xlink:to="srt_ExternalCreditRatingMoodysMember" order="13900.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ExternalCreditRatingMoodysMember" xlink:to="srt_MoodysBaa3RatingMember" order="13920.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_SevenYearTermLoanFacilityDue2018Member" order="14520.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_OneYearTermLoanFacilityDue2016TrancheOneMember" order="15000.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentLineItems" order="15700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage" order="15710.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" order="15960.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LineOfCreditFacilityExpirationDate1" order="16100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" order="16240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LineOfCredit" order="16410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" order="16450.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_RepaymentsOfDebt" order="16500.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentFaceAmount" order="16570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentInterestRateEffectivePercentage" order="16690.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentMaturityDate" order="16750.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="wltw_DebtInstrumentInterestAccrualDateDescription" order="16810.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_ProceedsFromDebtNetOfIssuanceCosts" order="16870.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_ExtinguishmentOfDebtAmount" order="16930.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_ProceedsFromIssuanceOfLongTermDebt" order="17290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_RepaymentsOfLinesOfCredit" order="18000.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentTerm" order="18700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentCreditRating" order="19690.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentPeriodicPayment" order="19820.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_DebtInstrumentPeriodicPaymentTermsBalloonPaymentToBePaid" order="19860.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="wltw_DebtInstrumentNumberofTranches" order="20010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_ProceedsFromLinesOfCredit" order="20090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="wltw_DebtInstrumentRepaymentMonthAndYear" order="20400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDebtMaturitiesOfLongTermDebtDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureDebtMaturitiesOfLongTermDebtDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDebtMaturitiesOfLongTermDebtDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebt" xlink:type="locator" xlink:label="us-gaap_LongTermDebt"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:type="locator" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_RevolvingOnePointTwoFiveBillionDollarCreditFacilityMember" xlink:type="locator" xlink:label="wltw_RevolvingOnePointTwoFiveBillionDollarCreditFacilityMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_InterestOnSeniorNotesMember" xlink:type="locator" xlink:label="wltw_InterestOnSeniorNotesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditMember" xlink:type="locator" xlink:label="us-gaap_LineOfCreditMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SeniorNotesMember" xlink:type="locator" xlink:label="us-gaap_SeniorNotesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:type="locator" xlink:label="us-gaap_LongtermDebtTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:type="locator" xlink:label="us-gaap_LongtermDebtTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:type="locator" xlink:label="us-gaap_RevolvingCreditFacilityMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:type="locator" xlink:label="us-gaap_CreditFacilityDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:type="locator" xlink:label="us-gaap_CreditFacilityAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_DebtDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_DebtInstrumentTable" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_CreditFacilityAxis" order="10090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CreditFacilityAxis" xlink:to="us-gaap_CreditFacilityDomain" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="us-gaap_RevolvingCreditFacilityMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_LongtermDebtTypeAxis" order="10090.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LongtermDebtTypeAxis" xlink:to="us-gaap_LongtermDebtTypeDomain" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_SeniorNotesMember" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_LineOfCreditMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentAxis" order="10090.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentNameDomain" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_InterestOnSeniorNotesMember" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_RevolvingOnePointTwoFiveBillionDollarCreditFacilityMember" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentLineItems" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" order="10450.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" order="10550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" order="10650.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" order="10750.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" order="10850.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LongTermDebt" order="10950.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDebtInterestExpenseDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureDebtInterestExpenseDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureDebtInterestExpenseDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestExpense" xlink:type="locator" xlink:label="us-gaap_InterestExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_WSIRevolvingCreditFacilityMember" xlink:type="locator" xlink:label="wltw_WSIRevolvingCreditFacilityMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_Revolving125BillionDollarCreditFacilityMember" xlink:type="locator" xlink:label="wltw_Revolving125BillionDollarCreditFacilityMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NotesPayableOtherPayablesMember" xlink:type="locator" xlink:label="us-gaap_NotesPayableOtherPayablesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditMember" xlink:type="locator" xlink:label="us-gaap_LineOfCreditMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NotesPayableToBanksMember" xlink:type="locator" xlink:label="us-gaap_NotesPayableToBanksMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SeniorNotesMember" xlink:type="locator" xlink:label="us-gaap_SeniorNotesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:type="locator" xlink:label="us-gaap_LongtermDebtTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:type="locator" xlink:label="us-gaap_LongtermDebtTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:type="locator" xlink:label="us-gaap_RevolvingCreditFacilityMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:type="locator" xlink:label="us-gaap_CreditFacilityDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:type="locator" xlink:label="us-gaap_CreditFacilityAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_DebtDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_DebtInstrumentTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_CreditFacilityAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CreditFacilityAxis" xlink:to="us-gaap_CreditFacilityDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="us-gaap_RevolvingCreditFacilityMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_LongtermDebtTypeAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LongtermDebtTypeAxis" xlink:to="us-gaap_LongtermDebtTypeDomain" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_SeniorNotesMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_NotesPayableToBanksMember" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_LineOfCreditMember" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_NotesPayableOtherPayablesMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentNameDomain" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_Revolving125BillionDollarCreditFacilityMember" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_WSIRevolvingCreditFacilityMember" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentLineItems" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_InterestExpense" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFairValueMeasurementsScheduleOfAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureFairValueMeasurementsScheduleOfAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFairValueMeasurementsScheduleOfAssetsAndLiabilitiesMeasuredAtFairValueOnRecurringBasisDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AlternativeInvestmentMeasurementInput" xlink:type="locator" xlink:label="us-gaap_AlternativeInvestmentMeasurementInput"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeLiabilities" xlink:type="locator" xlink:label="us-gaap_DerivativeLiabilities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisObligations" xlink:type="locator" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisObligations"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_LiabilitiesFairValueDisclosureAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeAssets" xlink:type="locator" xlink:label="us-gaap_DerivativeAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities" xlink:type="locator" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsFairValueDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_AssetsFairValueDisclosureAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:type="locator" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MeasurementInputDiscountRateMember" xlink:type="locator" xlink:label="us-gaap_MeasurementInputDiscountRateMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MeasurementInputTypeDomain" xlink:type="locator" xlink:label="us-gaap_MeasurementInputTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MeasurementInputTypeAxis" xlink:type="locator" xlink:label="us-gaap_MeasurementInputTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ObligationsMember" xlink:type="locator" xlink:label="us-gaap_ObligationsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:type="locator" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByLiabilityClassAxis" xlink:type="locator" xlink:label="us-gaap_FairValueByLiabilityClassAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel3Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel2Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel1Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:type="locator" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsRecurringMember" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementsRecurringMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:type="locator" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:type="locator" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:type="locator" xlink:label="us-gaap_FairValueDisclosuresAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueDisclosuresAbstract" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="us-gaap_FairValueByMeasurementFrequencyAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueByMeasurementFrequencyAxis" xlink:to="us-gaap_FairValueMeasurementFrequencyDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueMeasurementFrequencyDomain" xlink:to="us-gaap_FairValueMeasurementsRecurringMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueInputsLevel1Member" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueInputsLevel2Member" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueInputsLevel3Member" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="us-gaap_FairValueByLiabilityClassAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueByLiabilityClassAxis" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:to="us-gaap_ObligationsMember" order="10400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="us-gaap_MeasurementInputTypeAxis" order="10030.06" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MeasurementInputTypeAxis" xlink:to="us-gaap_MeasurementInputTypeDomain" order="10440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_MeasurementInputTypeDomain" xlink:to="us-gaap_MeasurementInputDiscountRateMember" order="10460.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" order="10480.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="us-gaap_AssetsFairValueDisclosureAbstract" order="10490.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AssetsFairValueDisclosureAbstract" xlink:to="us-gaap_AvailableForSaleSecuritiesDebtSecurities" order="10650.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AssetsFairValueDisclosureAbstract" xlink:to="us-gaap_DerivativeAssets" order="10730.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="us-gaap_LiabilitiesFairValueDisclosureAbstract" order="10810.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesFairValueDisclosureAbstract" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisObligations" order="10970.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LiabilitiesFairValueDisclosureAbstract" xlink:to="us-gaap_DerivativeLiabilities" order="11050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="us-gaap_AlternativeInvestmentMeasurementInput" order="11830.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFairValueMeasurementsFairValueLiabilitiesMeasuredUsingSignificantUnobservableInputsLevel3Details" xlink:href="wltw-20181231.xsd#Role_DisclosureFairValueMeasurementsFairValueLiabilitiesMeasuredUsingSignificantUnobservableInputsLevel3Details" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFairValueMeasurementsFairValueLiabilitiesMeasuredUsingSignificantUnobservableInputsLevel3Details">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:type="locator" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:type="locator" xlink:label="us-gaap_FairValueDisclosuresAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueDisclosuresAbstract" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue" order="10090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases" order="10130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings" order="10210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome" order="10250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:to="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue_li0l2" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFairValueMeasurementsNarrativeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureFairValueMeasurementsNarrativeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFairValueMeasurementsNarrativeDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_FairValueLevelOneLevelTwoOrLevelThreeTransfersAmount" xlink:type="locator" xlink:label="wltw_FairValueLevelOneLevelTwoOrLevelThreeTransfersAmount"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:type="locator" xlink:label="us-gaap_FairValueDisclosuresAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueDisclosuresAbstract" xlink:to="wltw_FairValueLevelOneLevelTwoOrLevelThreeTransfersAmount" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFairValueMeasurementsScheduleOfLiabilitiesWhoseCarryingValuesDifferFromFairValueAndAreNotMeasuredOnRecurringBasisDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureFairValueMeasurementsScheduleOfLiabilitiesWhoseCarryingValuesDifferFromFairValueAndAreNotMeasuredOnRecurringBasisDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFairValueMeasurementsScheduleOfLiabilitiesWhoseCarryingValuesDifferFromFairValueAndAreNotMeasuredOnRecurringBasisDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_LongtermDebtExcludingCurrentMaturitiesFairValue" xlink:type="locator" xlink:label="wltw_LongtermDebtExcludingCurrentMaturitiesFairValue"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LongtermDebtCurrentMaturitiesFairValue" xlink:type="locator" xlink:label="wltw_LongtermDebtCurrentMaturitiesFairValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:type="locator" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsNonrecurringMember" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementsNonrecurringMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementFrequencyDomain" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByMeasurementFrequencyAxis" xlink:type="locator" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EstimateOfFairValueFairValueDisclosureMember" xlink:type="locator" xlink:label="us-gaap_EstimateOfFairValueFairValueDisclosureMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CarryingReportedAmountFairValueDisclosureMember" xlink:type="locator" xlink:label="us-gaap_CarryingReportedAmountFairValueDisclosureMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PortionAtFairValueFairValueDisclosureMember" xlink:type="locator" xlink:label="us-gaap_PortionAtFairValueFairValueDisclosureMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosureItemAmountsDomain" xlink:type="locator" xlink:label="us-gaap_FairValueDisclosureItemAmountsDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByMeasurementBasisAxis" xlink:type="locator" xlink:label="us-gaap_FairValueByMeasurementBasisAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:type="locator" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueDisclosuresAbstract" xlink:type="locator" xlink:label="us-gaap_FairValueDisclosuresAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueDisclosuresAbstract" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="us-gaap_FairValueByMeasurementBasisAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueDisclosureItemAmountsDomain" xlink:to="us-gaap_PortionAtFairValueFairValueDisclosureMember" order="10070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueByMeasurementBasisAxis" xlink:to="us-gaap_FairValueDisclosureItemAmountsDomain" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueDisclosureItemAmountsDomain" xlink:to="us-gaap_CarryingReportedAmountFairValueDisclosureMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueDisclosureItemAmountsDomain" xlink:to="us-gaap_EstimateOfFairValueFairValueDisclosureMember" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="us-gaap_FairValueByMeasurementFrequencyAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueByMeasurementFrequencyAxis" xlink:to="us-gaap_FairValueMeasurementFrequencyDomain" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueMeasurementFrequencyDomain" xlink:to="us-gaap_FairValueMeasurementsNonrecurringMember" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable" xlink:to="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="wltw_LongtermDebtCurrentMaturitiesFairValue" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems" xlink:to="wltw_LongtermDebtExcludingCurrentMaturitiesFairValue" order="10390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsNarrativeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsNarrativeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsNarrativeDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedContributionPlanCostRecognized" xlink:type="locator" xlink:label="us-gaap_DefinedContributionPlanCostRecognized"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MaturityOfTimeDeposits" xlink:type="locator" xlink:label="us-gaap_MaturityOfTimeDeposits"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent" xlink:type="locator" xlink:label="us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch" xlink:type="locator" xlink:label="us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanAverageRemainingServicePeriod" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanAverageRemainingServicePeriod"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanNetPeriodicBenefitCostPeriodIncreaseDecrease" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanNetPeriodicBenefitCostPeriodIncreaseDecrease"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ReclassificationForPresentation" xlink:type="locator" xlink:label="wltw_ReclassificationForPresentation"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanEmployeesCoveredPercentage" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanEmployeesCoveredPercentage"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanRequiredEmployeeContributionRate" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanRequiredEmployeeContributionRate"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlansPercentageOfObligationFromPlans" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlansPercentageOfObligationFromPlans"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedContributionPlanTrancheTwoMember" xlink:type="locator" xlink:label="wltw_DefinedContributionPlanTrancheTwoMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedContributionPlanTrancheOneMember" xlink:type="locator" xlink:label="wltw_DefinedContributionPlanTrancheOneMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedContributionPlanTranchesDomain" xlink:type="locator" xlink:label="wltw_DefinedContributionPlanTranchesDomain"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedContributionPlanTranchesAxis" xlink:type="locator" xlink:label="wltw_DefinedContributionPlanTranchesAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAssumptionsForPensionPlansMember" xlink:type="locator" xlink:label="us-gaap_ChangeInAssumptionsForPensionPlansMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingEstimateTypeDomain" xlink:type="locator" xlink:label="us-gaap_ChangeInAccountingEstimateTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ChangeInAccountingEstimateByTypeAxis" xlink:type="locator" xlink:label="us-gaap_ChangeInAccountingEstimateByTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionCostsMember" xlink:type="locator" xlink:label="us-gaap_PensionCostsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RegulatoryLiabilityDomain" xlink:type="locator" xlink:label="us-gaap_RegulatoryLiabilityDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RegulatoryLiabilityAxis" xlink:type="locator" xlink:label="us-gaap_RegulatoryLiabilityAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingStandardsUpdate201707Member" xlink:type="locator" xlink:label="us-gaap_AccountingStandardsUpdate201707Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TypeOfAdoptionMember" xlink:type="locator" xlink:label="us-gaap_TypeOfAdoptionMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:type="locator" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_PensionPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeAxis"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_NL" xlink:type="locator" xlink:label="country_NL"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:type="locator" xlink:label="country_GB"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:type="locator" xlink:label="us-gaap_ForeignPlanMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticPlanMember" xlink:type="locator" xlink:label="us-gaap_DomesticPlanMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_NewlyEligibleEmployeesMember" xlink:type="locator" xlink:label="wltw_NewlyEligibleEmployeesMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_EmployeeStatusDomain" xlink:type="locator" xlink:label="wltw_EmployeeStatusDomain"/>
<loc xlink:href="wltw-20181231.xsd#wltw_EmployeeStatusAxis" xlink:type="locator" xlink:label="wltw_EmployeeStatusAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="wltw_EmployeeStatusAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_EmployeeStatusAxis" xlink:to="wltw_EmployeeStatusDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_EmployeeStatusDomain" xlink:to="wltw_NewlyEligibleEmployeesMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanSponsorLocationAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationAxis" xlink:to="us-gaap_RetirementPlanSponsorLocationDomain" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_DomesticPlanMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DomesticPlanMember" xlink:to="country_US" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_ForeignPlanMember" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_GB" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="country_NL" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanTypeAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeDomain" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_PensionPlansDefinedBenefitMember" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" order="10030.06" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis" xlink:to="us-gaap_TypeOfAdoptionMember" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_TypeOfAdoptionMember" xlink:to="us-gaap_AccountingStandardsUpdate201707Member" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RegulatoryLiabilityAxis" order="10030.08" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RegulatoryLiabilityAxis" xlink:to="us-gaap_RegulatoryLiabilityDomain" order="10420.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RegulatoryLiabilityDomain" xlink:to="us-gaap_PensionCostsMember" order="10440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_ChangeInAccountingEstimateByTypeAxis" order="10030.10" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ChangeInAccountingEstimateByTypeAxis" xlink:to="us-gaap_ChangeInAccountingEstimateTypeDomain" order="10600.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ChangeInAccountingEstimateTypeDomain" xlink:to="us-gaap_ChangeInAssumptionsForPensionPlansMember" order="10620.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" order="10680.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="wltw_DefinedContributionPlanTranchesAxis" order="10030.12" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DefinedContributionPlanTranchesAxis" xlink:to="wltw_DefinedContributionPlanTranchesDomain" order="10720.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DefinedContributionPlanTranchesDomain" xlink:to="wltw_DefinedContributionPlanTrancheOneMember" order="10740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="wltw_DefinedContributionPlanTranchesDomain" xlink:to="wltw_DefinedContributionPlanTrancheTwoMember" order="10780.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems" order="10860.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="wltw_DefinedBenefitPlansPercentageOfObligationFromPlans" order="10870.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="wltw_DefinedBenefitPlanRequiredEmployeeContributionRate" order="10920.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="wltw_DefinedBenefitPlanEmployeesCoveredPercentage" order="10970.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="wltw_ReclassificationForPresentation" order="11020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments" order="11110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1" order="11150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="wltw_DefinedBenefitPlanNetPeriodicBenefitCostPeriodIncreaseDecrease" order="11220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="wltw_DefinedBenefitPlanAverageRemainingServicePeriod" order="11270.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch" order="11320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent" order="11340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_MaturityOfTimeDeposits" order="11400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedContributionPlanCostRecognized" order="11450.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsChangeInBenefitObligationAndPlanAssetsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsChangeInBenefitObligationAndPlanAssetsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsChangeInBenefitObligationAndPlanAssetsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities" xlink:type="locator" xlink:label="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFundedStatusOfPlan" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanFundedStatusOfPlan"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanSettlementsPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanSettlementsPlanAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanContributionsByEmployer"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanBenefitObligation_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAmendments" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPlanAmendments"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanCurtailments" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanCurtailments"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanSettlementsBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanSettlementsBenefitObligation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanActuarialGainLoss" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanActuarialGainLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanInterestCost"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanServiceCost"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanBenefitObligation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherForeignPlansMember" xlink:type="locator" xlink:label="wltw_OtherForeignPlansMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:type="locator" xlink:label="country_GB"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:type="locator" xlink:label="us-gaap_ForeignPlanMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticPlanMember" xlink:type="locator" xlink:label="us-gaap_DomesticPlanMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_PensionPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanTypeAxis" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeDomain" order="10090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_PensionPlansDefinedBenefitMember" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanSponsorLocationAxis" order="10060.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationAxis" xlink:to="us-gaap_RetirementPlanSponsorLocationDomain" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_DomesticPlanMember" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DomesticPlanMember" xlink:to="country_US" order="10330.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_ForeignPlanMember" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_GB" order="10370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="wltw_OtherForeignPlansMember" order="10390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" order="10420.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:to="us-gaap_DefinedBenefitPlanBenefitObligation" order="10740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:to="us-gaap_DefinedBenefitPlanServiceCost" order="10900.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:to="us-gaap_DefinedBenefitPlanInterestCost" order="11060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:to="us-gaap_DefinedBenefitPlanBenefitObligationContributionsByPlanParticipant" order="11220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:to="us-gaap_DefinedBenefitPlanActuarialGainLoss" order="11380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:to="us-gaap_DefinedBenefitPlanSettlementsBenefitObligation" order="11540.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:to="us-gaap_DefinedBenefitPlanCurtailments" order="11700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:to="us-gaap_DefinedBenefitPlanBenefitObligationBenefitsPaid" order="11860.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:to="us-gaap_DefinedBenefitPlanPlanAmendments" order="12020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:to="us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan" order="12180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:to="us-gaap_DefinedBenefitPlanForeignCurrencyExchangeRateChangesBenefitObligation" order="12340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInBenefitObligationRollForward" xlink:to="us-gaap_DefinedBenefitPlanBenefitObligation_li0l2" order="12500.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" order="12660.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:to="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" order="12980.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:to="us-gaap_DefinedBenefitPlanActualReturnOnPlanAssets" order="13140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:to="us-gaap_DefinedBenefitPlanContributionsByEmployer" order="13300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:to="us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant" order="13460.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:to="us-gaap_DefinedBenefitPlanSettlementsPlanAssets" order="13620.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:to="us-gaap_DefinedBenefitPlanPlanAssetsBenefitsPaid" order="13780.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:to="us-gaap_DefinedBenefitPlanAssetsTransferredToFromPlan" order="13940.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:to="us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss" order="14100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward" xlink:to="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_li0l2" order="14260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanFundedStatusOfPlan" order="14420.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation" order="14580.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent" order="14740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities" order="14900.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" order="15060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet" order="15220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsAmountsRecognizedInOtherComprehensiveIncomeLossDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsAmountsRecognizedInOtherComprehensiveIncomeLossDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsAmountsRecognizedInOtherComprehensiveIncomeLossDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherForeignPlansMember" xlink:type="locator" xlink:label="wltw_OtherForeignPlansMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:type="locator" xlink:label="country_GB"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:type="locator" xlink:label="us-gaap_ForeignPlanMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticPlanMember" xlink:type="locator" xlink:label="us-gaap_DomesticPlanMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_PensionPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" order="10040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanTypeAxis" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeDomain" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_PensionPlansDefinedBenefitMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanSponsorLocationAxis" order="10050.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationAxis" xlink:to="us-gaap_RetirementPlanSponsorLocationDomain" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_DomesticPlanMember" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DomesticPlanMember" xlink:to="country_US" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_ForeignPlanMember" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_GB" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="wltw_OtherForeignPlansMember" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems" order="10400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesAfterTax" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditAfterTax" order="10570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax" order="10730.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsBenefitObligationInExcessOfPlanAssetsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsBenefitObligationInExcessOfPlanAssetsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsBenefitObligationInExcessOfPlanAssetsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherForeignPlansMember" xlink:type="locator" xlink:label="wltw_OtherForeignPlansMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:type="locator" xlink:label="country_GB"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:type="locator" xlink:label="us-gaap_ForeignPlanMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticPlanMember" xlink:type="locator" xlink:label="us-gaap_DomesticPlanMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_PensionPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanTypeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_PensionPlansDefinedBenefitMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanSponsorLocationAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationAxis" xlink:to="us-gaap_RetirementPlanSponsorLocationDomain" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_DomesticPlanMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DomesticPlanMember" xlink:to="country_US" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_ForeignPlanMember" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_GB" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="wltw_OtherForeignPlansMember" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsProjectedBenefitObligation" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanPensionPlanWithProjectedBenefitObligationInExcessOfPlanAssetsPlanAssets" order="10470.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsAccumulatedBenefitObligationInExcessOfPlanAssetsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsAccumulatedBenefitObligationInExcessOfPlanAssetsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsAccumulatedBenefitObligationInExcessOfPlanAssetsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherForeignPlansMember" xlink:type="locator" xlink:label="wltw_OtherForeignPlansMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:type="locator" xlink:label="country_GB"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:type="locator" xlink:label="us-gaap_ForeignPlanMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticPlanMember" xlink:type="locator" xlink:label="us-gaap_DomesticPlanMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_PensionPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanTypeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_PensionPlansDefinedBenefitMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanSponsorLocationAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationAxis" xlink:to="us-gaap_RetirementPlanSponsorLocationDomain" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_DomesticPlanMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DomesticPlanMember" xlink:to="country_US" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_ForeignPlanMember" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_GB" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="wltw_OtherForeignPlansMember" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation" order="10470.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets" order="10590.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsNetPeriodicBenefitCostDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsNetPeriodicBenefitCostDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsNetPeriodicBenefitCostDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_CostsRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncome" xlink:type="locator" xlink:label="wltw_CostsRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncome"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanInterestCost" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanInterestCost"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanServiceCost" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanServiceCost"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherForeignPlansMember" xlink:type="locator" xlink:label="wltw_OtherForeignPlansMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:type="locator" xlink:label="country_GB"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:type="locator" xlink:label="us-gaap_ForeignPlanMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticPlanMember" xlink:type="locator" xlink:label="us-gaap_DomesticPlanMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_PensionPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanTypeAxis" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeDomain" order="10210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_PensionPlansDefinedBenefitMember" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanSponsorLocationAxis" order="10180.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationAxis" xlink:to="us-gaap_RetirementPlanSponsorLocationDomain" order="10490.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_DomesticPlanMember" order="10510.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DomesticPlanMember" xlink:to="country_US" order="10530.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_ForeignPlanMember" order="10550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_GB" order="10570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="wltw_OtherForeignPlansMember" order="10590.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems" order="10610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanServiceCost" order="10620.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanInterestCost" order="10860.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets" order="11100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanAmortizationOfPriorServiceCostCredit" order="11340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses" order="11580.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1" order="11820.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments" order="12060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" order="12300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax" order="12540.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossBeforeTax" order="12780.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax" order="13020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax" order="13260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationBeforeTax" order="13500.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax" order="13740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax" order="13980.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="wltw_CostsRecognizedInNetPeriodicBenefitCostAndOtherComprehensiveIncome" order="14220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsAmountsInAOCIToBeRecognizedNextFiscalYearDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsAmountsInAOCIToBeRecognizedNextFiscalYearDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsAmountsInAOCIToBeRecognizedNextFiscalYearDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherForeignPlansMember" xlink:type="locator" xlink:label="wltw_OtherForeignPlansMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:type="locator" xlink:label="country_GB"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:type="locator" xlink:label="us-gaap_ForeignPlanMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticPlanMember" xlink:type="locator" xlink:label="us-gaap_DomesticPlanMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_PensionPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanTypeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_PensionPlansDefinedBenefitMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanSponsorLocationAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationAxis" xlink:to="us-gaap_RetirementPlanSponsorLocationDomain" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_DomesticPlanMember" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DomesticPlanMember" xlink:to="country_US" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_ForeignPlanMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_GB" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="wltw_OtherForeignPlansMember" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanExpectedAmortizationOfPriorServiceCostCreditNextFiscalYear" order="10390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsAssumptionsUsedDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsAssumptionsUsedDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsAssumptionsUsedDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateInterestCostOnProjectedBenefitObligation" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateInterestCostOnProjectedBenefitObligation"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateInterestCostOnServiceCost" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateInterestCostOnServiceCost"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateServiceCost" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateServiceCost"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateProjectedBenefitObligation" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateProjectedBenefitObligation"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherForeignPlansMember" xlink:type="locator" xlink:label="wltw_OtherForeignPlansMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:type="locator" xlink:label="country_GB"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:type="locator" xlink:label="us-gaap_ForeignPlanMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticPlanMember" xlink:type="locator" xlink:label="us-gaap_DomesticPlanMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_PensionPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanTypeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_PensionPlansDefinedBenefitMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanSponsorLocationAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationAxis" xlink:to="us-gaap_RetirementPlanSponsorLocationDomain" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_DomesticPlanMember" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DomesticPlanMember" xlink:to="country_US" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_ForeignPlanMember" order="10400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_GB" order="10420.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="wltw_OtherForeignPlansMember" order="10440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems" order="10700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="wltw_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateProjectedBenefitObligation" order="10710.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="wltw_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateServiceCost" order="10950.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="wltw_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateInterestCostOnServiceCost" order="11190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="wltw_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostDiscountRateInterestCostOnProjectedBenefitObligation" order="11430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets" order="11670.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostRateOfCompensationIncrease" order="11910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear" order="12150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanUltimateHealthCareCostTrendRate1" order="12390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate" order="12630.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate" order="12900.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease" order="13060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsAllocationOfPlanAssetsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsAllocationOfPlanAssetsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsAllocationOfPlanAssetsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_IE" xlink:type="locator" xlink:label="country_IE"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_DE" xlink:type="locator" xlink:label="country_DE"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_CA" xlink:type="locator" xlink:label="country_CA"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:type="locator" xlink:label="country_GB"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:type="locator" xlink:label="us-gaap_ForeignPlanMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticPlanMember" xlink:type="locator" xlink:label="us-gaap_DomesticPlanMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TowersWatsonCoMember" xlink:type="locator" xlink:label="wltw_TowersWatsonCoMember_li0l2"/>
<loc xlink:href="wltw-20181231.xsd#wltw_MillerMember" xlink:type="locator" xlink:label="wltw_MillerMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TowersWatsonCoMember" xlink:type="locator" xlink:label="wltw_TowersWatsonCoMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_WillisTowersWatsonMember" xlink:type="locator" xlink:label="wltw_WillisTowersWatsonMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_WillisMember" xlink:type="locator" xlink:label="wltw_WillisMember"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:type="locator" xlink:label="dei_EntityDomain"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:type="locator" xlink:label="dei_LegalEntityAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_PensionPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherInvestmentsMember" xlink:type="locator" xlink:label="us-gaap_OtherInvestmentsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateMember" xlink:type="locator" xlink:label="us-gaap_RealEstateMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtSecuritiesMember" xlink:type="locator" xlink:label="us-gaap_DebtSecuritiesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:type="locator" xlink:label="us-gaap_EquitySecuritiesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:type="locator" xlink:label="us-gaap_PlanAssetCategoriesDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:to="us-gaap_PlanAssetCategoriesDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_EquitySecuritiesMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_DebtSecuritiesMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_RealEstateMember" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_OtherInvestmentsMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanTypeAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeDomain" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_PensionPlansDefinedBenefitMember" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="dei_LegalEntityAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="10400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_WillisMember" order="10420.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_WillisTowersWatsonMember" order="10440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_TowersWatsonCoMember" order="10480.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_MillerMember" order="10500.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_TowersWatsonCoMember_li0l2" order="10580.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanSponsorLocationAxis" order="10030.06" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationAxis" xlink:to="us-gaap_RetirementPlanSponsorLocationDomain" order="10620.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_DomesticPlanMember" order="10640.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DomesticPlanMember" xlink:to="country_US" order="10660.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_ForeignPlanMember" order="10680.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_GB" order="10700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_CA" order="10720.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_DE" order="10740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_IE" order="10760.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems" order="10780.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage" order="10790.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsFairValueDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsFairValueDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsFairValueDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanFairValueOfPlanAssetsLiabilitiesNet" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanFairValueOfPlanAssetsLiabilitiesNet"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanFairValueOfPlanAssetsLiabilities" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanFairValueOfPlanAssetsLiabilities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InsuranceContractRightsAndObligationsFairValueOptionMember" xlink:type="locator" xlink:label="us-gaap_InsuranceContractRightsAndObligationsFairValueOptionMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember" xlink:type="locator" xlink:label="us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:type="locator" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByLiabilityClassAxis" xlink:type="locator" xlink:label="us-gaap_FairValueByLiabilityClassAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepurchaseAgreementsMember" xlink:type="locator" xlink:label="us-gaap_RepurchaseAgreementsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateMember" xlink:type="locator" xlink:label="us-gaap_RealEstateMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeMember" xlink:type="locator" xlink:label="us-gaap_DerivativeMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel3Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel2Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel1Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:type="locator" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherForeignPlansMember" xlink:type="locator" xlink:label="wltw_OtherForeignPlansMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:type="locator" xlink:label="country_GB"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:type="locator" xlink:label="us-gaap_ForeignPlanMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticPlanMember" xlink:type="locator" xlink:label="us-gaap_DomesticPlanMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_FairValueOfAssetMember" xlink:type="locator" xlink:label="wltw_FairValueOfAssetMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_HedgeFundsMember" xlink:type="locator" xlink:label="us-gaap_HedgeFundsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PrivateEquityFundsMember" xlink:type="locator" xlink:label="us-gaap_PrivateEquityFundsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MutualFundMember" xlink:type="locator" xlink:label="us-gaap_MutualFundMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CommingledFundsMember" xlink:type="locator" xlink:label="wltw_CommingledFundsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FixedIncomeSecuritiesMember" xlink:type="locator" xlink:label="us-gaap_FixedIncomeSecuritiesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:type="locator" xlink:label="us-gaap_CorporateDebtSecuritiesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_USTreasuryAndGovernmentMember" xlink:type="locator" xlink:label="us-gaap_USTreasuryAndGovernmentMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquitySecuritiesMember" xlink:type="locator" xlink:label="us-gaap_EquitySecuritiesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShortTermInvestmentsMember" xlink:type="locator" xlink:label="us-gaap_ShortTermInvestmentsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsMember" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanAssetCategoriesDomain" xlink:type="locator" xlink:label="us-gaap_PlanAssetCategoriesDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_PensionPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanTypeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_PensionPlansDefinedBenefitMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis" xlink:to="us-gaap_PlanAssetCategoriesDomain" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_CashAndCashEquivalentsMember" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_ShortTermInvestmentsMember" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_EquitySecuritiesMember" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_USTreasuryAndGovernmentMember" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_CorporateDebtSecuritiesMember" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_FixedIncomeSecuritiesMember" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="wltw_CommingledFundsMember" order="10400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_MutualFundMember" order="10420.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_PrivateEquityFundsMember" order="10440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_HedgeFundsMember" order="10460.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="wltw_FairValueOfAssetMember" order="10480.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanSponsorLocationAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationAxis" xlink:to="us-gaap_RetirementPlanSponsorLocationDomain" order="10520.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_DomesticPlanMember" order="10540.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DomesticPlanMember" xlink:to="country_US" order="10560.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_ForeignPlanMember" order="10580.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_GB" order="10600.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="wltw_OtherForeignPlansMember" order="10620.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis" order="10030.06" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" order="10660.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueInputsLevel1Member" order="10680.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueInputsLevel2Member" order="10700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueInputsLevel3Member" order="10720.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_DerivativeMember" order="11200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_RealEstateMember" order="11220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_RepurchaseAgreementsMember" order="11280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_FairValueByLiabilityClassAxis" order="10030.08" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueByLiabilityClassAxis" xlink:to="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" order="11320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain" xlink:to="us-gaap_DerivativeFinancialInstrumentsLiabilitiesMember" order="11340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanAssetCategoriesDomain" xlink:to="us-gaap_InsuranceContractRightsAndObligationsFairValueOptionMember" order="11820.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems" order="12120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" order="12130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="wltw_DefinedBenefitPlanFairValueOfPlanAssetsLiabilities" order="15840.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="wltw_DefinedBenefitPlanFairValueOfPlanAssetsLiabilitiesNet" order="16160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsFairValueReconciliationDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsFairValueReconciliationDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsFairValueReconciliationDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanOtherAdjustments" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanOtherAdjustments"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanDividendAndInterestReceivable" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanDividendAndInterestReceivable"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanNetPayableReceivableForInvestmentsPurchased" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanNetPayableReceivableForInvestmentsPurchased"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanPostretirementHealthAssets" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanPostretirementHealthAssets"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanNetAssetsHeldInInvestments" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanNetAssetsHeldInInvestments"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="wltw_DefinedBenefitPlanNetAssetsHeldInInvestments" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="wltw_DefinedBenefitPlanPostretirementHealthAssets" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="wltw_DefinedBenefitPlanNetPayableReceivableForInvestmentsPurchased" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="wltw_DefinedBenefitPlanDividendAndInterestReceivable" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="wltw_DefinedBenefitPlanOtherAdjustments" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsSignificantUnobservableInputReconciliationDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsSignificantUnobservableInputReconciliationDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsSignificantUnobservableInputReconciliationDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanPlanAssetsPlanTermination" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanPlanAssetsPlanTermination"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsLevel3ReconciliationRollForward" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsLevel3ReconciliationRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:type="locator" xlink:label="us-gaap_FairValueInputsLevel3Member"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:type="locator" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:type="locator" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanRollForwardsAbstract" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanRollForwardsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanRollForwardsAbstract" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_FairValueByFairValueHierarchyLevelAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:to="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:to="us-gaap_FairValueInputsLevel3Member" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsLevel3ReconciliationRollForward" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsLevel3ReconciliationRollForward" xlink:to="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets" order="10190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsLevel3ReconciliationRollForward" xlink:to="wltw_DefinedBenefitPlanPlanAssetsPlanTermination" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsLevel3ReconciliationRollForward" xlink:to="us-gaap_DefinedBenefitPlanPlanAssetsForeignCurrencyTranslationGainLoss" order="10270.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsLevel3ReconciliationRollForward" xlink:to="us-gaap_DefinedBenefitPlanFairValueOfPlanAssets_li0l2" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsProjectedBenefitObligationDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsProjectedBenefitObligationDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsProjectedBenefitObligationDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanContributionsByEmployer" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanContributionsByEmployer"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_QualifiedPlanMember" xlink:type="locator" xlink:label="us-gaap_QualifiedPlanMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTaxStatusDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTaxStatusDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTaxStatusAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTaxStatusAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_PensionPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherForeignPlansMember" xlink:type="locator" xlink:label="wltw_OtherForeignPlansMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:type="locator" xlink:label="country_GB"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:type="locator" xlink:label="us-gaap_ForeignPlanMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticPlanMember" xlink:type="locator" xlink:label="us-gaap_DomesticPlanMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanSponsorLocationAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationAxis" xlink:to="us-gaap_RetirementPlanSponsorLocationDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_DomesticPlanMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DomesticPlanMember" xlink:to="country_US" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_ForeignPlanMember" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_GB" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="wltw_OtherForeignPlansMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanTypeAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeDomain" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_PensionPlansDefinedBenefitMember" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanTaxStatusAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTaxStatusAxis" xlink:to="us-gaap_RetirementPlanTaxStatusDomain" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTaxStatusDomain" xlink:to="us-gaap_QualifiedPlanMember" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear" order="10390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanContributionsByEmployer" order="10470.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsExpectedBenefitPaymentsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureRetirementBenefitsExpectedBenefitPaymentsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureRetirementBenefitsExpectedBenefitPaymentsDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_DefinedBenefitPlanExpectedFutureBenefitPayments" xlink:type="locator" xlink:label="wltw_DefinedBenefitPlanExpectedFutureBenefitPayments"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanDisclosureLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OtherForeignPlansMember" xlink:type="locator" xlink:label="wltw_OtherForeignPlansMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_GB" xlink:type="locator" xlink:label="country_GB"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignPlanMember" xlink:type="locator" xlink:label="us-gaap_ForeignPlanMember"/>
<loc xlink:href="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd#country_US" xlink:type="locator" xlink:label="country_US"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DomesticPlanMember" xlink:type="locator" xlink:label="us-gaap_DomesticPlanMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanSponsorLocationAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanSponsorLocationAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionPlansDefinedBenefitMember" xlink:type="locator" xlink:label="us-gaap_PensionPlansDefinedBenefitMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeDomain" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RetirementPlanTypeAxis" xlink:type="locator" xlink:label="us-gaap_RetirementPlanTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CompensationAndRetirementDisclosureAbstract" xlink:to="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanTypeAxis" order="10090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeAxis" xlink:to="us-gaap_RetirementPlanTypeDomain" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_PensionPlansDefinedBenefitMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanTypeDomain" xlink:to="us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_RetirementPlanSponsorLocationAxis" order="10090.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationAxis" xlink:to="us-gaap_RetirementPlanSponsorLocationDomain" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_DomesticPlanMember" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DomesticPlanMember" xlink:to="country_US" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="us-gaap_ForeignPlanMember" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ForeignPlanMember" xlink:to="country_GB" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_RetirementPlanSponsorLocationDomain" xlink:to="wltw_OtherForeignPlansMember" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfDefinedBenefitPlansDisclosuresTable" xlink:to="us-gaap_DefinedBenefitPlanDisclosureLineItems" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths" order="10370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo" order="10490.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree" order="10610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour" order="10730.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive" order="10850.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter" order="10970.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DefinedBenefitPlanDisclosureLineItems" xlink:to="wltw_DefinedBenefitPlanExpectedFutureBenefitPayments" order="11090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureCommitmentsAndContingenciesNarrativeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureCommitmentsAndContingenciesNarrativeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureCommitmentsAndContingenciesNarrativeDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SettlementLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_SettlementLiabilitiesCurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LossContingencyPremiumRateIncrease" xlink:type="locator" xlink:label="wltw_LossContingencyPremiumRateIncrease"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LossContingencyEstimatedFutureDamagesIncurred" xlink:type="locator" xlink:label="wltw_LossContingencyEstimatedFutureDamagesIncurred"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LossContingencyActualDamagesIncurred" xlink:type="locator" xlink:label="wltw_LossContingencyActualDamagesIncurred"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LossContingencyIncreaseToActuarialAccruedLiabilityAllegedByPlaintiff" xlink:type="locator" xlink:label="wltw_LossContingencyIncreaseToActuarialAccruedLiabilityAllegedByPlaintiff"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationSettlementAmountAwardedToOtherParty" xlink:type="locator" xlink:label="us-gaap_LitigationSettlementAmountAwardedToOtherParty"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyAccrualProvision" xlink:type="locator" xlink:label="us-gaap_LossContingencyAccrualProvision"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyEstimateOfPossibleLoss" xlink:type="locator" xlink:label="us-gaap_LossContingencyEstimateOfPossibleLoss"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LossContingencyDismissedClaimPeriodToReplead" xlink:type="locator" xlink:label="wltw_LossContingencyDismissedClaimPeriodToReplead"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LossContingencyClaimsStayedPeriod" xlink:type="locator" xlink:label="wltw_LossContingencyClaimsStayedPeriod"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LossContingencyClaimsTransferredNumber" xlink:type="locator" xlink:label="wltw_LossContingencyClaimsTransferredNumber"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LossContingencyClaimsMovedToStayNumber" xlink:type="locator" xlink:label="wltw_LossContingencyClaimsMovedToStayNumber"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LossContingencyClaimsRemovedNumber" xlink:type="locator" xlink:label="wltw_LossContingencyClaimsRemovedNumber"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyNewClaimsFiledNumber" xlink:type="locator" xlink:label="us-gaap_LossContingencyNewClaimsFiledNumber"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyNumberOfPlaintiffs" xlink:type="locator" xlink:label="us-gaap_LossContingencyNumberOfPlaintiffs"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LossContingencyNumberOfActionsConsolidated" xlink:type="locator" xlink:label="wltw_LossContingencyNumberOfActionsConsolidated"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyDamagesSoughtValue" xlink:type="locator" xlink:label="us-gaap_LossContingencyDamagesSoughtValue"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CapitalContribution" xlink:type="locator" xlink:label="wltw_CapitalContribution"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AmountPayableFromOption" xlink:type="locator" xlink:label="wltw_AmountPayableFromOption"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PaymentsForDeferredContingentConsiderationFinancingActivities" xlink:type="locator" xlink:label="wltw_PaymentsForDeferredContingentConsiderationFinancingActivities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationContingentConsiderationLiability"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BusinessCombinationDeferredAndContingentConsideration" xlink:type="locator" xlink:label="wltw_BusinessCombinationDeferredAndContingentConsideration"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLeaseObligations" xlink:type="locator" xlink:label="us-gaap_CapitalLeaseObligations"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesRentExpenseSubleaseRentals1" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesRentExpenseSubleaseRentals1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesRentExpenseMinimumRentals" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesRentExpenseMinimumRentals"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:type="locator" xlink:label="us-gaap_LossContingenciesLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ElmaSanchezCaseMember" xlink:type="locator" xlink:label="wltw_ElmaSanchezCaseMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CityOfHoustonMember" xlink:type="locator" xlink:label="wltw_CityOfHoustonMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_StanfordFinancialGroupMember" xlink:type="locator" xlink:label="wltw_StanfordFinancialGroupMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AbelEtAlVWillisOfColoradoIncEtAlMember" xlink:type="locator" xlink:label="wltw_AbelEtAlVWillisOfColoradoIncEtAlMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_MartinVWillisOfColoradoIncEtAlMember" xlink:type="locator" xlink:label="wltw_MartinVWillisOfColoradoIncEtAlMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_JanveyEtAlVWillisOfColoradoIncEtAlMember" xlink:type="locator" xlink:label="wltw_JanveyEtAlVWillisOfColoradoIncEtAlMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ZacariasEtAlVWillisGroupHoldingsPublicLimitedCompanyEtAlMember" xlink:type="locator" xlink:label="wltw_ZacariasEtAlVWillisGroupHoldingsPublicLimitedCompanyEtAlMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TismineskyEtAlVWillisGroupHoldingsPublicLimitedCompanyEtAlMember" xlink:type="locator" xlink:label="wltw_TismineskyEtAlVWillisGroupHoldingsPublicLimitedCompanyEtAlMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_RanniEtAnoVWillisGroupHoldingsPublicLimitedCompanyEtAlMember" xlink:type="locator" xlink:label="wltw_RanniEtAnoVWillisGroupHoldingsPublicLimitedCompanyEtAlMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DeGadalaMariaEtAlVWillisGroupHoldingsPublicLimitedCompanyEtAlMember" xlink:type="locator" xlink:label="wltw_DeGadalaMariaEtAlVWillisGroupHoldingsPublicLimitedCompanyEtAlMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BarbarEtAlVWillisGroupHoldingsPublicLimitedCompanyEtAlMember" xlink:type="locator" xlink:label="wltw_BarbarEtAlVWillisGroupHoldingsPublicLimitedCompanyEtAlMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_StanfordFinancialGroupFloridaSuitsMember" xlink:type="locator" xlink:label="wltw_StanfordFinancialGroupFloridaSuitsMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_MacArthurVWinterEtAlMember" xlink:type="locator" xlink:label="wltw_MacArthurVWinterEtAlMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_RishmagueEtAnoVWinterEtAlMember" xlink:type="locator" xlink:label="wltw_RishmagueEtAnoVWinterEtAlMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CasanovaEtAlVWillisOfColoradoIncEtAlMember" xlink:type="locator" xlink:label="wltw_CasanovaEtAlVWillisOfColoradoIncEtAlMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_RupertEtAlVWinterEtAlMember" xlink:type="locator" xlink:label="wltw_RupertEtAlVWinterEtAlMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_CanabalEtAlVWillisOfColoradoIncEtAlMember" xlink:type="locator" xlink:label="wltw_CanabalEtAlVWillisOfColoradoIncEtAlMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PendingLitigationMember" xlink:type="locator" xlink:label="us-gaap_PendingLitigationMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TroiceEtAlVWillisOfColoradoIncEtAlMember" xlink:type="locator" xlink:label="wltw_TroiceEtAlVWillisOfColoradoIncEtAlMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_LitigationCaseTypeDomain" xlink:type="locator" xlink:label="srt_LitigationCaseTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_LitigationCaseAxis" xlink:type="locator" xlink:label="srt_LitigationCaseAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SettledLitigationMember" xlink:type="locator" xlink:label="us-gaap_SettledLitigationMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationStatusDomain" xlink:type="locator" xlink:label="us-gaap_LitigationStatusDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationStatusAxis" xlink:type="locator" xlink:label="us-gaap_LitigationStatusAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TridentVParallelFundMember" xlink:type="locator" xlink:label="wltw_TridentVParallelFundMember"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:type="locator" xlink:label="dei_EntityDomain"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:type="locator" xlink:label="dei_LegalEntityAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_AlstonAndGaylerAndMillerInsuranceServicesLLPMember" xlink:type="locator" xlink:label="wltw_AlstonAndGaylerAndMillerInsuranceServicesLLPMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyLeaseGuaranteeMember" xlink:type="locator" xlink:label="us-gaap_PropertyLeaseGuaranteeMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingencyNatureDomain" xlink:type="locator" xlink:label="us-gaap_LossContingencyNatureDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:type="locator" xlink:label="us-gaap_LossContingenciesByNatureOfContingencyAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesTable" xlink:type="locator" xlink:label="us-gaap_LossContingenciesTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_LossContingenciesTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesTable" xlink:to="us-gaap_LossContingenciesByNatureOfContingencyAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesByNatureOfContingencyAxis" xlink:to="us-gaap_LossContingencyNatureDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingencyNatureDomain" xlink:to="us-gaap_PropertyLeaseGuaranteeMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesTable" xlink:to="us-gaap_BusinessAcquisitionAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionAxis" xlink:to="us-gaap_BusinessAcquisitionAcquireeDomain" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="wltw_AlstonAndGaylerAndMillerInsuranceServicesLLPMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesTable" xlink:to="dei_LegalEntityAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_TridentVParallelFundMember" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesTable" xlink:to="us-gaap_LitigationStatusAxis" order="10030.06" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LitigationStatusAxis" xlink:to="us-gaap_LitigationStatusDomain" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LitigationStatusDomain" xlink:to="us-gaap_SettledLitigationMember" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesTable" xlink:to="srt_LitigationCaseAxis" order="10030.08" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseAxis" xlink:to="srt_LitigationCaseTypeDomain" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_TroiceEtAlVWillisOfColoradoIncEtAlMember" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LitigationStatusDomain" xlink:to="us-gaap_PendingLitigationMember" order="10520.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_CanabalEtAlVWillisOfColoradoIncEtAlMember" order="10580.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_RupertEtAlVWinterEtAlMember" order="10700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_CasanovaEtAlVWillisOfColoradoIncEtAlMember" order="10840.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_RishmagueEtAnoVWinterEtAlMember" order="10980.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_MacArthurVWinterEtAlMember" order="11120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_StanfordFinancialGroupFloridaSuitsMember" order="11600.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_BarbarEtAlVWillisGroupHoldingsPublicLimitedCompanyEtAlMember" order="11620.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_DeGadalaMariaEtAlVWillisGroupHoldingsPublicLimitedCompanyEtAlMember" order="11660.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_RanniEtAnoVWillisGroupHoldingsPublicLimitedCompanyEtAlMember" order="11700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_TismineskyEtAlVWillisGroupHoldingsPublicLimitedCompanyEtAlMember" order="11740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_ZacariasEtAlVWillisGroupHoldingsPublicLimitedCompanyEtAlMember" order="11780.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_JanveyEtAlVWillisOfColoradoIncEtAlMember" order="12060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_MartinVWillisOfColoradoIncEtAlMember" order="12220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_AbelEtAlVWillisOfColoradoIncEtAlMember" order="12360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_StanfordFinancialGroupMember" order="12500.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_CityOfHoustonMember" order="13020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_LitigationCaseTypeDomain" xlink:to="wltw_ElmaSanchezCaseMember" order="13440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesTable" xlink:to="us-gaap_LossContingenciesLineItems" order="13840.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="us-gaap_OperatingLeasesRentExpenseMinimumRentals" order="13850.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="us-gaap_OperatingLeasesRentExpenseSubleaseRentals1" order="13910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="us-gaap_CapitalLeaseObligations" order="14000.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" order="14070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="wltw_BusinessCombinationDeferredAndContingentConsideration" order="14180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="us-gaap_BusinessCombinationContingentConsiderationLiability" order="14200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="wltw_PaymentsForDeferredContingentConsiderationFinancingActivities" order="14220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="wltw_AmountPayableFromOption" order="14270.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="wltw_CapitalContribution" order="14320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="us-gaap_LossContingencyDamagesSoughtValue" order="14370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="wltw_LossContingencyNumberOfActionsConsolidated" order="14420.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="us-gaap_LossContingencyNumberOfPlaintiffs" order="14520.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="us-gaap_LossContingencyNewClaimsFiledNumber" order="14800.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="wltw_LossContingencyClaimsRemovedNumber" order="15020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="wltw_LossContingencyClaimsMovedToStayNumber" order="15040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="wltw_LossContingencyClaimsTransferredNumber" order="15060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="wltw_LossContingencyClaimsStayedPeriod" order="15080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="wltw_LossContingencyDismissedClaimPeriodToReplead" order="15100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="us-gaap_LossContingencyEstimateOfPossibleLoss" order="15210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="us-gaap_LossContingencyAccrualProvision" order="15440.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="us-gaap_LitigationSettlementAmountAwardedToOtherParty" order="15490.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="wltw_LossContingencyIncreaseToActuarialAccruedLiabilityAllegedByPlaintiff" order="15660.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="wltw_LossContingencyActualDamagesIncurred" order="15710.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="wltw_LossContingencyEstimatedFutureDamagesIncurred" order="15730.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="wltw_LossContingencyPremiumRateIncrease" order="15940.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LossContingenciesLineItems" xlink:to="us-gaap_SettlementLiabilitiesCurrent" order="15990.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureCommitmentsAndContingenciesFutureMinimumRentalCommitmentsUnderAllNonCancellableOperatingLeaseAgreementsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureCommitmentsAndContingenciesFutureMinimumRentalCommitmentsUnderAllNonCancellableOperatingLeaseAgreementsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureCommitmentsAndContingenciesFutureMinimumRentalCommitmentsUnderAllNonCancellableOperatingLeaseAgreementsDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeTotal" xlink:type="locator" xlink:label="wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeTotal"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueThereafter" xlink:type="locator" xlink:label="wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueThereafter"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueInFiveYears" xlink:type="locator" xlink:label="wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueInFiveYears"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueInFourYears" xlink:type="locator" xlink:label="wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueInFourYears"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueInThreeYears" xlink:type="locator" xlink:label="wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueInThreeYears"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueInTwoYears" xlink:type="locator" xlink:label="wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueInTwoYears"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeCurrent" xlink:type="locator" xlink:label="wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperatingLeasesFutureMinimumPaymentsDueFutureThereafterSubleaseRentals" xlink:type="locator" xlink:label="wltw_OperatingLeasesFutureMinimumPaymentsDueFutureThereafterSubleaseRentals"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperatingLeasesFutureMinimumPaymentsDueFutureInYearFiveSubleaseRentals" xlink:type="locator" xlink:label="wltw_OperatingLeasesFutureMinimumPaymentsDueFutureInYearFiveSubleaseRentals"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperatingLeasesFutureMinimumPaymentsDueFutureInYearFourSubleaseRentals" xlink:type="locator" xlink:label="wltw_OperatingLeasesFutureMinimumPaymentsDueFutureInYearFourSubleaseRentals"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperatingLeasesFutureMinimumPaymentsDueFutureInYearThreeSubleaseRentals" xlink:type="locator" xlink:label="wltw_OperatingLeasesFutureMinimumPaymentsDueFutureInYearThreeSubleaseRentals"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperatingLeasesFutureMinimumPaymentsDueFutureInYearTwoSubleaseRentals" xlink:type="locator" xlink:label="wltw_OperatingLeasesFutureMinimumPaymentsDueFutureInYearTwoSubleaseRentals"/>
<loc xlink:href="wltw-20181231.xsd#wltw_OperatingLeasesFutureMinimumPaymentsDueInOneYearMinimumSubleaseRentals" xlink:type="locator" xlink:label="wltw_OperatingLeasesFutureMinimumPaymentsDueInOneYearMinimumSubleaseRentals"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:type="locator" xlink:label="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" order="10190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" order="10210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" order="10250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" order="10270.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDue" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="wltw_OperatingLeasesFutureMinimumPaymentsDueInOneYearMinimumSubleaseRentals" order="10330.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="wltw_OperatingLeasesFutureMinimumPaymentsDueFutureInYearTwoSubleaseRentals" order="10370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="wltw_OperatingLeasesFutureMinimumPaymentsDueFutureInYearThreeSubleaseRentals" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="wltw_OperatingLeasesFutureMinimumPaymentsDueFutureInYearFourSubleaseRentals" order="10450.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="wltw_OperatingLeasesFutureMinimumPaymentsDueFutureInYearFiveSubleaseRentals" order="10490.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="wltw_OperatingLeasesFutureMinimumPaymentsDueFutureThereafterSubleaseRentals" order="10530.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="us-gaap_OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals" order="10570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedTotalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeCurrent" order="10610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueInTwoYears" order="10670.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueInThreeYears" order="10730.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueInFourYears" order="10790.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueInFiveYears" order="10850.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeDueThereafter" order="10910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:to="wltw_OperatingLeasesFutureMinimumPaymentsDueNetSubleaseIncomeTotal" order="10970.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsPrepaidAndOtherCurrentAssetsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureSupplementaryInformationForCertainBalanceSheetAccountsPrepaidAndOtherCurrentAssetsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsPrepaidAndOtherCurrentAssetsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:type="locator" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsCurrent" xlink:type="locator" xlink:label="us-gaap_OtherAssetsCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxesReceivable" xlink:type="locator" xlink:label="us-gaap_IncomeTaxesReceivable"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PrepaidBonusesCurrent" xlink:type="locator" xlink:label="wltw_PrepaidBonusesCurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DeferredCompensationPlanAssetsCurrent" xlink:type="locator" xlink:label="wltw_DeferredCompensationPlanAssetsCurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DerivativesAndInvestmentsCurrent" xlink:type="locator" xlink:label="wltw_DerivativesAndInvestmentsCurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DeferredContractCostsCurrent" xlink:type="locator" xlink:label="wltw_DeferredContractCostsCurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PrepaidExpenseAndAccruedRevenueReceivableCurrent" xlink:type="locator" xlink:label="wltw_PrepaidExpenseAndAccruedRevenueReceivableCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:type="locator" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_PrepaidExpenseAndAccruedRevenueReceivableCurrent" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_DeferredContractCostsCurrent" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_DerivativesAndInvestmentsCurrent" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_DeferredCompensationPlanAssetsCurrent" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_PrepaidBonusesCurrent" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_IncomeTaxesReceivable" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OtherAssetsCurrent" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_PrepaidExpenseAndOtherAssetsCurrent" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsOtherNonCurrentAssetsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureSupplementaryInformationForCertainBalanceSheetAccountsOtherNonCurrentAssetsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsOtherNonCurrentAssetsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherAssetsNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsMiscellaneousNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherAssetsMiscellaneousNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherInvestments" xlink:type="locator" xlink:label="us-gaap_OtherInvestments"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNetNoncurrent" xlink:type="locator" xlink:label="us-gaap_AccountsReceivableNetNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent" xlink:type="locator" xlink:label="us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredCompensationPlanAssets" xlink:type="locator" xlink:label="us-gaap_DeferredCompensationPlanAssets"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DeferredContractCostsNoncurrent" xlink:type="locator" xlink:label="wltw_DeferredContractCostsNoncurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PrepaidExpenseAndAccruedRevenueReceivableNoncurrent" xlink:type="locator" xlink:label="wltw_PrepaidExpenseAndAccruedRevenueReceivableNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:type="locator" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_PrepaidExpenseAndAccruedRevenueReceivableNoncurrent" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_DeferredContractCostsNoncurrent" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_DeferredCompensationPlanAssets" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_AccountsReceivableNetNoncurrent" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OtherInvestments" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OtherAssetsMiscellaneousNoncurrent" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OtherAssetsNoncurrent" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsDeferredRevenueAndAccruedExpensesDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureSupplementaryInformationForCertainBalanceSheetAccountsDeferredRevenueAndAccruedExpensesDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsDeferredRevenueAndAccruedExpensesDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_DeferredRevenueAndAccruedLiabilitiesCurrent" xlink:type="locator" xlink:label="wltw_DeferredRevenueAndAccruedLiabilitiesCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherEmployeeRelatedLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_OtherEmployeeRelatedLiabilitiesCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherDeferredCompensationArrangementsLiabilityCurrent" xlink:type="locator" xlink:label="us-gaap_OtherDeferredCompensationArrangementsLiabilityCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredCompensationCashBasedArrangementsLiabilityCurrent" xlink:type="locator" xlink:label="us-gaap_DeferredCompensationCashBasedArrangementsLiabilityCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsPayableOtherCurrent" xlink:type="locator" xlink:label="us-gaap_AccountsPayableOtherCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:type="locator" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_AccountsPayableOtherCurrent" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_EmployeeRelatedLiabilitiesCurrent" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_DeferredCompensationCashBasedArrangementsLiabilityCurrent" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OtherDeferredCompensationArrangementsLiabilityCurrent" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OtherEmployeeRelatedLiabilitiesCurrent" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_DeferredRevenueAndAccruedLiabilitiesCurrent" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsOtherCurrentLiabilitiesDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureSupplementaryInformationForCertainBalanceSheetAccountsOtherCurrentLiabilitiesDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsOtherCurrentLiabilitiesDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_OtherLiabilitiesCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherSundryLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_OtherSundryLiabilitiesCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccruedSalesCommissionCurrent" xlink:type="locator" xlink:label="us-gaap_AccruedSalesCommissionCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DerivativeLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_DerivativeLiabilitiesCurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PayrollRelatedLiabilitiesCurrent" xlink:type="locator" xlink:label="wltw_PayrollRelatedLiabilitiesCurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BusinessCombinationContingentConsiderationLiabilityAndDeferredConsiderationCurrent" xlink:type="locator" xlink:label="wltw_BusinessCombinationContingentConsiderationLiabilityAndDeferredConsiderationCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TaxesPayableCurrent" xlink:type="locator" xlink:label="us-gaap_TaxesPayableCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:type="locator" xlink:label="us-gaap_AccountsPayableCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:type="locator" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_AccountsPayableCurrent" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_TaxesPayableCurrent" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_BusinessCombinationContingentConsiderationLiabilityAndDeferredConsiderationCurrent" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_PayrollRelatedLiabilitiesCurrent" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_DerivativeLiabilitiesCurrent" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_AccruedSalesCommissionCurrent" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OtherSundryLiabilitiesCurrent" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OtherLiabilitiesCurrent" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsProvisionForLiabilitiesDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureSupplementaryInformationForCertainBalanceSheetAccountsProvisionForLiabilitiesDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsProvisionForLiabilitiesDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationReserveNoncurrent" xlink:type="locator" xlink:label="us-gaap_LitigationReserveNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAccruedLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherAccruedLiabilitiesNoncurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ProvisionForClaimsLawsuitsAndOtherProceedings" xlink:type="locator" xlink:label="wltw_ProvisionForClaimsLawsuitsAndOtherProceedings"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:type="locator" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_ProvisionForClaimsLawsuitsAndOtherProceedings" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OtherAccruedLiabilitiesNoncurrent" order="10070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_LitigationReserveNoncurrent" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsOtherNonCurrentLiabilitiesDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureSupplementaryInformationForCertainBalanceSheetAccountsOtherNonCurrentLiabilitiesDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementaryInformationForCertainBalanceSheetAccountsOtherNonCurrentLiabilitiesDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherLiabilitiesNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherSundryLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherSundryLiabilitiesNoncurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_LeaserelatedLiabilitiesNoncurrent" xlink:type="locator" xlink:label="wltw_LeaserelatedLiabilitiesNoncurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_UnrecognizedTaxBenefitsIncludingInterest" xlink:type="locator" xlink:label="wltw_UnrecognizedTaxBenefitsIncludingInterest"/>
<loc xlink:href="wltw-20181231.xsd#wltw_BusinessCombinationContingentConsiderationLiabilityAndDeferredConsiderationNoncurrent" xlink:type="locator" xlink:label="wltw_BusinessCombinationContingentConsiderationLiabilityAndDeferredConsiderationNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent" xlink:type="locator" xlink:label="us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncentiveFromLessor" xlink:type="locator" xlink:label="us-gaap_IncentiveFromLessor"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:type="locator" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_IncentiveFromLessor" order="10070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_BusinessCombinationContingentConsiderationLiabilityAndDeferredConsiderationNoncurrent" order="10150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_UnrecognizedTaxBenefitsIncludingInterest" order="10190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="wltw_LeaserelatedLiabilitiesNoncurrent" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OtherSundryLiabilitiesNoncurrent" order="10270.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:to="us-gaap_OtherLiabilitiesNoncurrent" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureOtherIncomeNetDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureOtherIncomeNetDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureOtherIncomeNetDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:type="locator" xlink:label="us-gaap_OtherNonoperatingIncomeExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossRealized" xlink:type="locator" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossRealized"/>
<loc xlink:href="wltw-20181231.xsd#wltw_EffectOfExchangeRateChangesOnNetIncome" xlink:type="locator" xlink:label="wltw_EffectOfExchangeRateChangesOnNetIncome"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InvestmentIncomeInterest" xlink:type="locator" xlink:label="us-gaap_InvestmentIncomeInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal" xlink:type="locator" xlink:label="us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherIncomeAndExpensesAbstract" xlink:type="locator" xlink:label="us-gaap_OtherIncomeAndExpensesAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OtherIncomeAndExpensesAbstract" xlink:to="us-gaap_DisposalGroupNotDiscontinuedOperationGainLossOnDisposal" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OtherIncomeAndExpensesAbstract" xlink:to="us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OtherIncomeAndExpensesAbstract" xlink:to="us-gaap_InvestmentIncomeInterest" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OtherIncomeAndExpensesAbstract" xlink:to="wltw_EffectOfExchangeRateChangesOnNetIncome" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OtherIncomeAndExpensesAbstract" xlink:to="us-gaap_ForeignCurrencyTransactionGainLossRealized" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_OtherIncomeAndExpensesAbstract" xlink:to="us-gaap_OtherNonoperatingIncomeExpense" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossComponentsOfOtherComprehensiveLossIncomeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureAccumulatedOtherComprehensiveLossComponentsOfOtherComprehensiveLossIncomeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossComponentsOfOtherComprehensiveLossIncomeDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossBeforeTax" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossBeforeTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AociAttributableToNoncontrollingInterestMember" xlink:type="locator" xlink:label="us-gaap_AociAttributableToNoncontrollingInterestMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:type="locator" xlink:label="us-gaap_EquityComponentDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementEquityComponentsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityAbstract" xlink:type="locator" xlink:label="us-gaap_EquityAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityAbstract" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" order="10040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:to="us-gaap_StatementEquityComponentsAxis" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementEquityComponentsAxis" xlink:to="us-gaap_EquityComponentDomain" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_AccumulatedForeignCurrencyAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_AccumulatedDefinedBenefitPlansAdjustmentIncludingPortionAttributableToNoncontrollingInterestMember" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_AccumulatedNetGainLossFromCashFlowHedgesIncludingPortionAttributableToNoncontrollingInterestMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_AociAttributableToNoncontrollingInterestMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeMember" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:to="us-gaap_OtherComprehensiveIncomeLossBeforeTax" order="10210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:to="us-gaap_OtherComprehensiveIncomeLossTax" order="10390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTax" order="10570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossScheduleOfAccumulatedOtherComprehensiveIncomeLossDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureAccumulatedOtherComprehensiveLossScheduleOfAccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureAccumulatedOtherComprehensiveLossScheduleOfAccumulatedOtherComprehensiveIncomeLossDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodTax" xlink:type="locator" xlink:label="us-gaap_ReclassificationFromAociCurrentPeriodTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:type="locator" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent" xlink:type="locator" xlink:label="us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent" xlink:type="locator" xlink:label="us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:type="locator" xlink:label="us-gaap_AOCIAttributableToParentNetOfTaxRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedTranslationAdjustmentMember" xlink:type="locator" xlink:label="us-gaap_AccumulatedTranslationAdjustmentMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:type="locator" xlink:label="us-gaap_EquityComponentDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:type="locator" xlink:label="us-gaap_StatementEquityComponentsAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:type="locator" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityAbstract" xlink:type="locator" xlink:label="us-gaap_EquityAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityAbstract" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" order="10040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:to="us-gaap_StatementEquityComponentsAxis" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_StatementEquityComponentsAxis" xlink:to="us-gaap_EquityComponentDomain" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_AccumulatedTranslationAdjustmentMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_AccumulatedDefinedBenefitPlansAdjustmentMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:to="us-gaap_AOCIAttributableToParentNetOfTaxRollForward" order="10190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" order="10430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:to="us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent" order="10550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:to="us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent" order="10670.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" order="10790.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AOCIAttributableToParentNetOfTaxRollForward" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_li0l2" order="10910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems" xlink:to="us-gaap_ReclassificationFromAociCurrentPeriodTax" order="12140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureShareBasedCompensationNarrativeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureShareBasedCompensationNarrativeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureShareBasedCompensationNarrativeDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent" xlink:type="locator" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
<loc xlink:href="wltw-20181231.xsd#wltw_EmployeeServicesShareBasedCompensationTaxBenefitRealizedFromVestingOfRSUs" xlink:type="locator" xlink:label="wltw_EmployeeServicesShareBasedCompensationTaxBenefitRealizedFromVestingOfRSUs"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedinPeriodWeightedAverageGrantDateSharePrice" xlink:type="locator" xlink:label="wltw_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedinPeriodWeightedAverageGrantDateSharePrice"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions" xlink:type="locator" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:type="locator" xlink:label="us-gaap_ProceedsFromStockOptionsExercised"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:type="locator" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:type="locator" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod"/>
<loc xlink:href="wltw-20181231.xsd#wltw_Qualifiedyearsofserviceintheperformanceperiod" xlink:type="locator" xlink:label="wltw_Qualifiedyearsofserviceintheperformanceperiod"/>
<loc xlink:href="wltw-20181231.xsd#wltw_Qualifiedyearsofservice" xlink:type="locator" xlink:label="wltw_Qualifiedyearsofservice"/>
<loc xlink:href="wltw-20181231.xsd#wltw_Qualifiedretirementage" xlink:type="locator" xlink:label="wltw_Qualifiedretirementage"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding" xlink:type="locator" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding"/>
<loc xlink:href="wltw-20181231.xsd#wltw_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstandingOne" xlink:type="locator" xlink:label="wltw_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstandingOne"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:type="locator" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense" xlink:type="locator" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:type="locator" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PhantomRestrictedStockUnitsMember" xlink:type="locator" xlink:label="wltw_PhantomRestrictedStockUnitsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:type="locator" xlink:label="us-gaap_PerformanceSharesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:type="locator" xlink:label="us-gaap_RestrictedStockUnitsRSUMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PerformanceBasedStockOptionsMember" xlink:type="locator" xlink:label="wltw_PerformanceBasedStockOptionsMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TimeBasedStockOptionsMember" xlink:type="locator" xlink:label="wltw_TimeBasedStockOptionsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:type="locator" xlink:label="us-gaap_EmployeeStockOptionMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:type="locator" xlink:label="srt_MaximumMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:type="locator" xlink:label="srt_MinimumMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:type="locator" xlink:label="srt_RangeMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:type="locator" xlink:label="srt_RangeAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PostAcquisitionMember" xlink:type="locator" xlink:label="wltw_PostAcquisitionMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PreAcquisitionMember" xlink:type="locator" xlink:label="wltw_PreAcquisitionMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:type="locator" xlink:label="us-gaap_BusinessAcquisitionAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TowersWatsonCo2009LongTermIncentivePlanMember" xlink:type="locator" xlink:label="wltw_TowersWatsonCo2009LongTermIncentivePlanMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_RestrictedStockUnitsRSUAndOptionsMember" xlink:type="locator" xlink:label="wltw_RestrictedStockUnitsRSUAndOptionsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AwardTypeAxis" xlink:type="locator" xlink:label="us-gaap_AwardTypeAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_A2012EquityIncentivePlanMember" xlink:type="locator" xlink:label="wltw_A2012EquityIncentivePlanMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameDomain" xlink:type="locator" xlink:label="us-gaap_PlanNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PlanNameAxis" xlink:type="locator" xlink:label="us-gaap_PlanNameAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:type="locator" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_PlanNameAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanNameAxis" xlink:to="us-gaap_PlanNameDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanNameDomain" xlink:to="wltw_A2012EquityIncentivePlanMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_AwardTypeAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="wltw_RestrictedStockUnitsRSUAndOptionsMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_PlanNameDomain" xlink:to="wltw_TowersWatsonCo2009LongTermIncentivePlanMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_BusinessAcquisitionAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionAxis" xlink:to="us-gaap_BusinessAcquisitionAcquireeDomain" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="wltw_PreAcquisitionMember" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_BusinessAcquisitionAcquireeDomain" xlink:to="wltw_PostAcquisitionMember" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="srt_RangeAxis" order="10030.06" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeAxis" xlink:to="srt_RangeMember" order="10500.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MinimumMember" order="10520.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_RangeMember" xlink:to="srt_MaximumMember" order="10540.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_EmployeeStockOptionMember" order="10600.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="wltw_TimeBasedStockOptionsMember" order="10660.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="wltw_PerformanceBasedStockOptionsMember" order="10860.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_RestrictedStockUnitsRSUMember" order="10960.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_PerformanceSharesMember" order="11080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="wltw_PhantomRestrictedStockUnitsMember" order="11200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" order="11340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_AllocatedShareBasedCompensationExpense" order="11350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense" order="11410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" order="11500.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" order="11520.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="wltw_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstandingOne" order="11570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAggregateIntrinsicValueOutstanding" order="11650.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="wltw_Qualifiedretirementage" order="11840.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="wltw_Qualifiedyearsofservice" order="11860.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="wltw_Qualifiedyearsofserviceintheperformanceperiod" order="11880.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" order="11930.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" order="11980.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue" order="12040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" order="12100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" order="12160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ProceedsFromStockOptionsExercised" order="12370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions" order="12430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" order="12640.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="wltw_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedinPeriodWeightedAverageGrantDateSharePrice" order="12700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="wltw_EmployeeServicesShareBasedCompensationTaxBenefitRealizedFromVestingOfRSUs" order="13060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" order="13150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" order="13170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" order="13190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent" order="13260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureShareBasedCompensationAssumptionsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureShareBasedCompensationAssumptionsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureShareBasedCompensationAssumptionsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:type="locator" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:type="locator" xlink:label="us-gaap_RestrictedStockUnitsRSUMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:type="locator" xlink:label="us-gaap_EmployeeStockOptionMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AwardTypeAxis" xlink:type="locator" xlink:label="us-gaap_AwardTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:type="locator" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_AwardTypeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_EmployeeStockOptionMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_RestrictedStockUnitsRSUMember" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" order="10330.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" order="10370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureShareBasedCompensationOptionsActivityDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureShareBasedCompensationOptionsActivityDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureShareBasedCompensationOptionsActivityDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:type="locator" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:type="locator" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1" xlink:type="locator" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:type="locator" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:type="locator" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PerformanceBasedStockOptionsMember" xlink:type="locator" xlink:label="wltw_PerformanceBasedStockOptionsMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TimeBasedStockOptionsMember" xlink:type="locator" xlink:label="wltw_TimeBasedStockOptionsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AwardTypeAxis" xlink:type="locator" xlink:label="us-gaap_AwardTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:type="locator" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_AwardTypeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="wltw_TimeBasedStockOptionsMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="wltw_PerformanceBasedStockOptionsMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" order="11080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" order="11090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" order="11130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" order="11150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" order="11170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod" order="11190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_li0l2" order="11210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" order="11230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" order="11250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod" order="11370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" order="11480.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" order="11520.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" order="11540.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" order="11560.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice" order="11580.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_li0l2" order="11600.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice" order="11620.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" order="11640.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" order="11720.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice" order="11760.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" order="11870.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1" order="11890.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" order="11910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" order="12020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue" order="12040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" order="12060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureShareBasedCompensationNonvestedRestrictedStockUnitsAndPerformanceBasedStockUnitsActivityDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureShareBasedCompensationNonvestedRestrictedStockUnitsAndPerformanceBasedStockUnitsActivityDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureShareBasedCompensationNonvestedRestrictedStockUnitsAndPerformanceBasedStockUnitsActivityDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:type="locator" xlink:label="us-gaap_PerformanceSharesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:type="locator" xlink:label="us-gaap_RestrictedStockUnitsRSUMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AwardTypeAxis" xlink:type="locator" xlink:label="us-gaap_AwardTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:type="locator" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_AwardTypeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_RestrictedStockUnitsRSUMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_PerformanceSharesMember" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" order="10600.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" order="10610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" order="10650.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" order="10670.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" order="10690.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" order="10710.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_li0l2" order="10730.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward" order="10920.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" order="10960.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" order="10980.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" order="11000.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" order="11020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_li0l2" order="11040.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureEarningsPerShareNarrativeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureEarningsPerShareNarrativeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureEarningsPerShareNarrativeDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:type="locator" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:type="locator" xlink:label="us-gaap_RestrictedStockUnitsRSUMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:type="locator" xlink:label="us-gaap_EmployeeStockOptionMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesNameDomain" xlink:type="locator" xlink:label="us-gaap_AntidilutiveSecuritiesNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:type="locator" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:type="locator" xlink:label="us-gaap_PerformanceSharesMember_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PhantomShareUnitsPSUsMember" xlink:type="locator" xlink:label="us-gaap_PhantomShareUnitsPSUsMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:type="locator" xlink:label="us-gaap_PerformanceSharesMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TimeBasedSharesMember" xlink:type="locator" xlink:label="wltw_TimeBasedSharesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:type="locator" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AwardTypeAxis" xlink:type="locator" xlink:label="us-gaap_AwardTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:type="locator" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_AwardTypeAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="wltw_TimeBasedSharesMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_PerformanceSharesMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_PhantomShareUnitsPSUsMember" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_PerformanceSharesMember_li0l2" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis" xlink:to="us-gaap_AntidilutiveSecuritiesNameDomain" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AntidilutiveSecuritiesNameDomain" xlink:to="us-gaap_EmployeeStockOptionMember" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_AntidilutiveSecuritiesNameDomain" xlink:to="us-gaap_RestrictedStockUnitsRSUMember" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" order="10530.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" order="10740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureEarningsPerShareBasicAndDilutedEarningsPerShareDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureEarningsPerShareBasicAndDilutedEarningsPerShareDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureEarningsPerShareBasicAndDilutedEarningsPerShareDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareDiluted"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DilutiveSecuritiesEffectOnBasicEarningsPerShare" xlink:type="locator" xlink:label="wltw_DilutiveSecuritiesEffectOnBasicEarningsPerShare"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareBasic"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:type="locator" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" xlink:type="locator" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:type="locator" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:type="locator" xlink:label="us-gaap_NetIncomeLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_NetIncomeLoss" order="10050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" order="10230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_EarningsPerShareBasic" order="10290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="wltw_DilutiveSecuritiesEffectOnBasicEarningsPerShare" order="10350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_EarningsPerShareDiluted" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementalDisclosuresOfCashFlowInformationDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureSupplementalDisclosuresOfCashFlowInformationDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureSupplementalDisclosuresOfCashFlowInformationDetails">
<loc xlink:href="wltw-20181231.xsd#wltw_NonCashOrPartNonCashAcquisitionFairValueOfDeferredAndContingentConsideration" xlink:type="locator" xlink:label="wltw_NonCashOrPartNonCashAcquisitionFairValueOfDeferredAndContingentConsideration"/>
<loc xlink:href="wltw-20181231.xsd#wltw_IssuanceOfSharesAndAwardsAssumedMerger" xlink:type="locator" xlink:label="wltw_IssuanceOfSharesAndAwardsAssumedMerger"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAcquiredFromAcquisition" xlink:type="locator" xlink:label="us-gaap_CashAcquiredFromAcquisition"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestPaidNet" xlink:type="locator" xlink:label="us-gaap_InterestPaidNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxesPaidNet" xlink:type="locator" xlink:label="us-gaap_IncomeTaxesPaidNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:type="locator" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SupplementalCashFlowElementsAbstract" xlink:type="locator" xlink:label="us-gaap_SupplementalCashFlowElementsAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SupplementalCashFlowElementsAbstract" xlink:to="us-gaap_SupplementalCashFlowInformationAbstract" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SupplementalCashFlowElementsAbstract" xlink:to="us-gaap_IncomeTaxesPaidNet" order="10130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SupplementalCashFlowElementsAbstract" xlink:to="us-gaap_InterestPaidNet" order="10190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SupplementalCashFlowElementsAbstract" xlink:to="us-gaap_CashAcquiredFromAcquisition" order="10250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SupplementalCashFlowElementsAbstract" xlink:to="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract" order="10310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SupplementalCashFlowElementsAbstract" xlink:to="wltw_IssuanceOfSharesAndAwardsAssumedMerger" order="10430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_SupplementalCashFlowElementsAbstract" xlink:to="wltw_NonCashOrPartNonCashAcquisitionFairValueOfDeferredAndContingentConsideration" order="10490.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureQuarterlyFinancialDataUnauditedDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureQuarterlyFinancialDataUnauditedDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureQuarterlyFinancialDataUnauditedDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareDiluted"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareBasic"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:type="locator" xlink:label="us-gaap_EarningsPerShareAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:type="locator" xlink:label="us-gaap_NetIncomeLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:type="locator" xlink:label="us-gaap_ProfitLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:type="locator" xlink:label="us-gaap_OperatingIncomeLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingExpenses" xlink:type="locator" xlink:label="us-gaap_OperatingExpenses"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:type="locator" xlink:label="us-gaap_Revenues"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_QuarterlyFinancialDataAbstract" xlink:type="locator" xlink:label="us-gaap_QuarterlyFinancialDataAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_QuarterlyFinancialDataAbstract" xlink:to="us-gaap_Revenues" order="10010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_QuarterlyFinancialDataAbstract" xlink:to="us-gaap_OperatingExpenses" order="10090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_QuarterlyFinancialDataAbstract" xlink:to="us-gaap_OperatingIncomeLoss" order="10170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_QuarterlyFinancialDataAbstract" xlink:to="us-gaap_ProfitLoss" order="10250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_QuarterlyFinancialDataAbstract" xlink:to="us-gaap_NetIncomeLoss" order="10330.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_QuarterlyFinancialDataAbstract" xlink:to="us-gaap_EarningsPerShareAbstract" order="10410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_EarningsPerShareBasic" order="10570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_EarningsPerShareDiluted" order="10650.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesNarrativeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesNarrativeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesNarrativeDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:type="locator" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebt" xlink:type="locator" xlink:label="us-gaap_LongTermDebt"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentLineItems"/>
<loc xlink:href="wltw-20181231.xsd#wltw_Revolving125BillionDollarCreditFacilityMember" xlink:type="locator" xlink:label="wltw_Revolving125BillionDollarCreditFacilityMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentNameDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:type="locator" xlink:label="us-gaap_RevolvingCreditFacilityMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:type="locator" xlink:label="us-gaap_CreditFacilityDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:type="locator" xlink:label="us-gaap_CreditFacilityAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TrinityAcquisitionPlcMember" xlink:type="locator" xlink:label="wltw_TrinityAcquisitionPlcMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_WillisNorthAmericaIncMember" xlink:type="locator" xlink:label="wltw_WillisNorthAmericaIncMember"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:type="locator" xlink:label="dei_EntityDomain"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:type="locator" xlink:label="dei_LegalEntityAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SeniorNotesMember" xlink:type="locator" xlink:label="us-gaap_SeniorNotesMember"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:type="locator" xlink:label="us-gaap_LongtermDebtTypeDomain"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:type="locator" xlink:label="us-gaap_LongtermDebtTypeAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ParentCompanyMember" xlink:type="locator" xlink:label="srt_ParentCompanyMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:type="locator" xlink:label="srt_ConsolidatedEntitiesDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:type="locator" xlink:label="srt_ConsolidatedEntitiesAxis"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:type="locator" xlink:label="us-gaap_DebtInstrumentTable"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:type="locator" xlink:label="us-gaap_DebtDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtDisclosureAbstract" xlink:to="us-gaap_DebtInstrumentTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="srt_ConsolidatedEntitiesAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidatedEntitiesAxis" xlink:to="srt_ConsolidatedEntitiesDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidatedEntitiesDomain" xlink:to="srt_ParentCompanyMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_LongtermDebtTypeAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LongtermDebtTypeAxis" xlink:to="us-gaap_LongtermDebtTypeDomain" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_SeniorNotesMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="dei_LegalEntityAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_WillisNorthAmericaIncMember" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_TrinityAcquisitionPlcMember" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_CreditFacilityAxis" order="10030.06" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CreditFacilityAxis" xlink:to="us-gaap_CreditFacilityDomain" order="10480.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="us-gaap_RevolvingCreditFacilityMember" order="10500.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentAxis" order="10030.08" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentNameDomain" order="10700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="wltw_Revolving125BillionDollarCreditFacilityMember" order="10720.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentTable" xlink:to="us-gaap_DebtInstrumentLineItems" order="10740.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LongTermDebt" order="10750.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_DebtInstrumentLineItems" xlink:to="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" order="10910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesCondensedConsolidatingStatementOfComprehensiveIncomeDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesCondensedConsolidatingStatementOfComprehensiveIncomeDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesCondensedConsolidatingStatementOfComprehensiveIncomeDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:type="locator" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:type="locator" xlink:label="us-gaap_NetIncomeLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:type="locator" xlink:label="us-gaap_ProfitLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromSubsidiariesNetOfTax" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromSubsidiariesNetOfTax"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:type="locator" xlink:label="us-gaap_IncomeTaxExpenseBenefit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:type="locator" xlink:label="us-gaap_OtherNonoperatingIncomeExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestExpense" xlink:type="locator" xlink:label="us-gaap_InterestExpense"/>
<loc xlink:href="wltw-20181231.xsd#wltw_IntercompanyIncomeExpense" xlink:type="locator" xlink:label="wltw_IntercompanyIncomeExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:type="locator" xlink:label="us-gaap_OperatingIncomeLoss"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingExpenses" xlink:type="locator" xlink:label="us-gaap_OperatingExpenses"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationIntegrationRelatedCosts" xlink:type="locator" xlink:label="us-gaap_BusinessCombinationIntegrationRelatedCosts"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestructuringCharges" xlink:type="locator" xlink:label="us-gaap_RestructuringCharges"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:type="locator" xlink:label="us-gaap_AmortizationOfIntangibleAssets"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DepreciationNotIncludingIntegrationComponent" xlink:type="locator" xlink:label="wltw_DepreciationNotIncludingIntegrationComponent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherCostAndExpenseOperating" xlink:type="locator" xlink:label="us-gaap_OtherCostAndExpenseOperating"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LaborAndRelatedExpense" xlink:type="locator" xlink:label="us-gaap_LaborAndRelatedExpense"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostsAndExpensesAbstract" xlink:type="locator" xlink:label="us-gaap_CostsAndExpensesAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:type="locator" xlink:label="us-gaap_Revenues"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CondensedFinancialStatementsCaptionsLineItems" xlink:type="locator" xlink:label="srt_CondensedFinancialStatementsCaptionsLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_NonGuarantorSubsidiariesMember" xlink:type="locator" xlink:label="srt_NonGuarantorSubsidiariesMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_GuarantorSubsidiariesMember" xlink:type="locator" xlink:label="srt_GuarantorSubsidiariesMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ParentCompanyMember" xlink:type="locator" xlink:label="srt_ParentCompanyMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:type="locator" xlink:label="srt_ConsolidatedEntitiesDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:type="locator" xlink:label="srt_ConsolidatedEntitiesAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationEliminationsMember" xlink:type="locator" xlink:label="srt_ConsolidationEliminationsMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ReportableLegalEntitiesMember" xlink:type="locator" xlink:label="srt_ReportableLegalEntitiesMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:type="locator" xlink:label="srt_ConsolidationItemsDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:type="locator" xlink:label="srt_ConsolidationItemsAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TrinityAcquisitionPlcMember" xlink:type="locator" xlink:label="wltw_TrinityAcquisitionPlcMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_WillisNorthAmericaIncMember" xlink:type="locator" xlink:label="wltw_WillisNorthAmericaIncMember"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:type="locator" xlink:label="dei_EntityDomain"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:type="locator" xlink:label="dei_LegalEntityAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScheduleOfCondensedFinancialStatementsTable" xlink:type="locator" xlink:label="srt_ScheduleOfCondensedFinancialStatementsTable"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:type="locator" xlink:label="srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:to="srt_ScheduleOfCondensedFinancialStatementsTable" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScheduleOfCondensedFinancialStatementsTable" xlink:to="dei_LegalEntityAxis" order="10110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_WillisNorthAmericaIncMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_TrinityAcquisitionPlcMember" order="10180.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScheduleOfCondensedFinancialStatementsTable" xlink:to="srt_ConsolidationItemsAxis" order="10110.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsAxis" xlink:to="srt_ConsolidationItemsDomain" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="srt_ReportableLegalEntitiesMember" order="10240.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="srt_ConsolidationEliminationsMember" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScheduleOfCondensedFinancialStatementsTable" xlink:to="srt_ConsolidatedEntitiesAxis" order="10110.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidatedEntitiesAxis" xlink:to="srt_ConsolidatedEntitiesDomain" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidatedEntitiesDomain" xlink:to="srt_ParentCompanyMember" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidatedEntitiesDomain" xlink:to="srt_GuarantorSubsidiariesMember" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidatedEntitiesDomain" xlink:to="srt_NonGuarantorSubsidiariesMember" order="10400.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScheduleOfCondensedFinancialStatementsTable" xlink:to="srt_CondensedFinancialStatementsCaptionsLineItems" order="11020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_Revenues" order="11030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_CostsAndExpensesAbstract" order="11170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_LaborAndRelatedExpense" order="11450.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_OtherCostAndExpenseOperating" order="11590.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="wltw_DepreciationNotIncludingIntegrationComponent" order="11730.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_AmortizationOfIntangibleAssets" order="11870.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_RestructuringCharges" order="12010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_BusinessCombinationIntegrationRelatedCosts" order="12150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_OperatingExpenses" order="12290.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_OperatingIncomeLoss" order="12430.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="wltw_IntercompanyIncomeExpense" order="12570.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_InterestExpense" order="12710.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_OtherNonoperatingIncomeExpense" order="12850.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" order="12990.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_IncomeTaxExpenseBenefit" order="13130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_IncomeLossFromSubsidiariesNetOfTax" order="13270.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_ProfitLoss" order="13410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" order="13550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_NetIncomeLoss" order="13690.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest" order="13830.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest" order="13970.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_ComprehensiveIncomeNetOfTax" order="14110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesCondensedConsolidatingBalanceSheetDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesCondensedConsolidatingBalanceSheetDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesCondensedConsolidatingBalanceSheetDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:type="locator" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MinorityInterest" xlink:type="locator" xlink:label="us-gaap_MinorityInterest"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:type="locator" xlink:label="us-gaap_StockholdersEquity"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:type="locator" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount" xlink:type="locator" xlink:label="us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Liabilities" xlink:type="locator" xlink:label="us-gaap_Liabilities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_LiabilitiesNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherLiabilitiesNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LitigationReserveNoncurrent" xlink:type="locator" xlink:label="us-gaap_LitigationReserveNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredTaxLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_DeferredTaxLiabilitiesNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" xlink:type="locator" xlink:label="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtNoncurrent" xlink:type="locator" xlink:label="us-gaap_LongTermDebtNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DueToAffiliateCurrentAndNoncurrent" xlink:type="locator" xlink:label="us-gaap_DueToAffiliateCurrentAndNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_LiabilitiesCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilitiesCurrent" xlink:type="locator" xlink:label="us-gaap_OtherLiabilitiesCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtCurrent" xlink:type="locator" xlink:label="us-gaap_DebtCurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_DeferredRevenueAndAccruedLiabilitiesCurrent" xlink:type="locator" xlink:label="wltw_DeferredRevenueAndAccruedLiabilitiesCurrent"/>
<loc xlink:href="wltw-20181231.xsd#wltw_FiduciaryLiabilitiesCurrent" xlink:type="locator" xlink:label="wltw_FiduciaryLiabilitiesCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:type="locator" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Assets" xlink:type="locator" xlink:label="us-gaap_Assets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:type="locator" xlink:label="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_AssetsNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:type="locator" xlink:label="us-gaap_OtherAssetsNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent" xlink:type="locator" xlink:label="us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:type="locator" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Goodwill" xlink:type="locator" xlink:label="us-gaap_Goodwill"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:type="locator" xlink:label="us-gaap_PropertyPlantAndEquipmentNet"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DueFromAffiliates" xlink:type="locator" xlink:label="us-gaap_DueFromAffiliates"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsCurrent" xlink:type="locator" xlink:label="us-gaap_AssetsCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:type="locator" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:type="locator" xlink:label="us-gaap_AccountsReceivableNetCurrent"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FundsHeldForClients" xlink:type="locator" xlink:label="us-gaap_FundsHeldForClients"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsAbstract" xlink:type="locator" xlink:label="us-gaap_AssetsAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CondensedFinancialStatementsCaptionsLineItems" xlink:type="locator" xlink:label="srt_CondensedFinancialStatementsCaptionsLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_NonGuarantorSubsidiariesMember" xlink:type="locator" xlink:label="srt_NonGuarantorSubsidiariesMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_GuarantorSubsidiariesMember" xlink:type="locator" xlink:label="srt_GuarantorSubsidiariesMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ParentCompanyMember" xlink:type="locator" xlink:label="srt_ParentCompanyMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:type="locator" xlink:label="srt_ConsolidatedEntitiesDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:type="locator" xlink:label="srt_ConsolidatedEntitiesAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationEliminationsMember" xlink:type="locator" xlink:label="srt_ConsolidationEliminationsMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ReportableLegalEntitiesMember" xlink:type="locator" xlink:label="srt_ReportableLegalEntitiesMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:type="locator" xlink:label="srt_ConsolidationItemsDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:type="locator" xlink:label="srt_ConsolidationItemsAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TrinityAcquisitionPlcMember" xlink:type="locator" xlink:label="wltw_TrinityAcquisitionPlcMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_WillisNorthAmericaIncMember" xlink:type="locator" xlink:label="wltw_WillisNorthAmericaIncMember"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:type="locator" xlink:label="dei_EntityDomain"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:type="locator" xlink:label="dei_LegalEntityAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScheduleOfCondensedFinancialStatementsTable" xlink:type="locator" xlink:label="srt_ScheduleOfCondensedFinancialStatementsTable"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:type="locator" xlink:label="srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:to="srt_ScheduleOfCondensedFinancialStatementsTable" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScheduleOfCondensedFinancialStatementsTable" xlink:to="dei_LegalEntityAxis" order="10090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="10120.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_WillisNorthAmericaIncMember" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_TrinityAcquisitionPlcMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScheduleOfCondensedFinancialStatementsTable" xlink:to="srt_ConsolidationItemsAxis" order="10090.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsAxis" xlink:to="srt_ConsolidationItemsDomain" order="10200.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="srt_ReportableLegalEntitiesMember" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="srt_ConsolidationEliminationsMember" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScheduleOfCondensedFinancialStatementsTable" xlink:to="srt_ConsolidatedEntitiesAxis" order="10090.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidatedEntitiesAxis" xlink:to="srt_ConsolidatedEntitiesDomain" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidatedEntitiesDomain" xlink:to="srt_ParentCompanyMember" order="10340.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidatedEntitiesDomain" xlink:to="srt_GuarantorSubsidiariesMember" order="10360.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidatedEntitiesDomain" xlink:to="srt_NonGuarantorSubsidiariesMember" order="10380.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScheduleOfCondensedFinancialStatementsTable" xlink:to="srt_CondensedFinancialStatementsCaptionsLineItems" order="10700.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_AssetsAbstract" order="10710.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue" order="10990.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_FundsHeldForClients" order="11130.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_AccountsReceivableNetCurrent" order="11270.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_PrepaidExpenseAndOtherAssetsCurrent" order="11410.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_AssetsCurrent" order="11550.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_DueFromAffiliates" order="11690.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_PropertyPlantAndEquipmentNet" order="11830.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_Goodwill" order="11970.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_IntangibleAssetsNetExcludingGoodwill" order="12110.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent" order="12250.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_OtherAssetsNoncurrent" order="12390.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_AssetsNoncurrent" order="12530.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" order="12670.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_Assets" order="12810.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_LiabilitiesAndStockholdersEquityAbstract" order="12950.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="wltw_FiduciaryLiabilitiesCurrent" order="13230.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="wltw_DeferredRevenueAndAccruedLiabilitiesCurrent" order="13370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_DebtCurrent" order="13510.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_OtherLiabilitiesCurrent" order="13650.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_LiabilitiesCurrent" order="13790.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_DueToAffiliateCurrentAndNoncurrent" order="13930.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_LongTermDebtNoncurrent" order="14070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent" order="14210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_DeferredTaxLiabilitiesNoncurrent" order="14350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_LitigationReserveNoncurrent" order="14490.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_OtherLiabilitiesNoncurrent" order="14630.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_LiabilitiesNoncurrent" order="14770.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_Liabilities" order="14910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_RedeemableNoncontrollingInterestEquityCarryingAmount" order="15050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" order="15190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_StockholdersEquity" order="15470.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_MinorityInterest" order="15610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" order="15750.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity" order="15890.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
</presentationLink>
<roleRef roleURI="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesCondensedConsolidatingStatementOfCashFlowsDetails" xlink:href="wltw-20181231.xsd#Role_DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesCondensedConsolidatingStatementOfCashFlowsDetails" xlink:type="simple"/>
<presentationLink xlink:type="extended" xlink:role="http://www.willistowerswatson.com/20181231/taxonomy/role/DisclosureFinancialInformationForIssuersAndOtherGuarantorSubsidiariesCondensedConsolidatingStatementOfCashFlowsDetails">
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_li0l2"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:type="locator" xlink:label="us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:type="locator" xlink:label="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
<loc xlink:href="wltw-20181231.xsd#wltw_RepaymentsOfIntercompanyFinancingActivities" xlink:type="locator" xlink:label="wltw_RepaymentsOfIntercompanyFinancingActivities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromPaymentsToMinorityShareholders" xlink:type="locator" xlink:label="us-gaap_ProceedsFromPaymentsToMinorityShareholders"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:type="locator" xlink:label="us-gaap_PaymentsOfDividendsCommonStock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" xlink:type="locator" xlink:label="us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
<loc xlink:href="wltw-20181231.xsd#wltw_PaymentsForDeferredContingentConsiderationFinancingActivities" xlink:type="locator" xlink:label="wltw_PaymentsForDeferredContingentConsiderationFinancingActivities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForRepurchaseOfEquity" xlink:type="locator" xlink:label="us-gaap_PaymentsForRepurchaseOfEquity"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:type="locator" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock" xlink:type="locator" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt" xlink:type="locator" xlink:label="us-gaap_RepaymentsOfLongTermDebt"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsOfDebtIssuanceCosts" xlink:type="locator" xlink:label="us-gaap_PaymentsOfDebtIssuanceCosts"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt" xlink:type="locator" xlink:label="us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt" xlink:type="locator" xlink:label="us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromRepaymentsOfLinesOfCredit" xlink:type="locator" xlink:label="us-gaap_ProceedsFromRepaymentsOfLinesOfCredit"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ProceedsFromRepaymentsOfInvestmentInIntercompanyInvestingActivities" xlink:type="locator" xlink:label="wltw_ProceedsFromRepaymentsOfInvestmentInIntercompanyInvestingActivities"/>
<loc xlink:href="wltw-20181231.xsd#wltw_ProceedsFromRepaymentsOfIntercompanyInvestingActivities" xlink:type="locator" xlink:label="wltw_ProceedsFromRepaymentsOfIntercompanyInvestingActivities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities" xlink:type="locator" xlink:label="us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested" xlink:type="locator" xlink:label="us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:type="locator" xlink:label="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToDevelopSoftware" xlink:type="locator" xlink:label="us-gaap_PaymentsToDevelopSoftware"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquireProductiveAssets" xlink:type="locator" xlink:label="us-gaap_PaymentsToAcquireProductiveAssets"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract"/>
<loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:type="locator" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CondensedFinancialStatementsCaptionsLineItems" xlink:type="locator" xlink:label="srt_CondensedFinancialStatementsCaptionsLineItems"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_NonGuarantorSubsidiariesMember" xlink:type="locator" xlink:label="srt_NonGuarantorSubsidiariesMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_GuarantorSubsidiariesMember" xlink:type="locator" xlink:label="srt_GuarantorSubsidiariesMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ParentCompanyMember" xlink:type="locator" xlink:label="srt_ParentCompanyMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidatedEntitiesDomain" xlink:type="locator" xlink:label="srt_ConsolidatedEntitiesDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidatedEntitiesAxis" xlink:type="locator" xlink:label="srt_ConsolidatedEntitiesAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationEliminationsMember" xlink:type="locator" xlink:label="srt_ConsolidationEliminationsMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ReportableLegalEntitiesMember" xlink:type="locator" xlink:label="srt_ReportableLegalEntitiesMember"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsDomain" xlink:type="locator" xlink:label="srt_ConsolidationItemsDomain"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ConsolidationItemsAxis" xlink:type="locator" xlink:label="srt_ConsolidationItemsAxis"/>
<loc xlink:href="wltw-20181231.xsd#wltw_TrinityAcquisitionPlcMember" xlink:type="locator" xlink:label="wltw_TrinityAcquisitionPlcMember"/>
<loc xlink:href="wltw-20181231.xsd#wltw_WillisNorthAmericaIncMember" xlink:type="locator" xlink:label="wltw_WillisNorthAmericaIncMember"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:type="locator" xlink:label="dei_EntityDomain"/>
<loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:type="locator" xlink:label="dei_LegalEntityAxis"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ScheduleOfCondensedFinancialStatementsTable" xlink:type="locator" xlink:label="srt_ScheduleOfCondensedFinancialStatementsTable"/>
<loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:type="locator" xlink:label="srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialInformationOfParentCompanyOnlyDisclosureAbstract" xlink:to="srt_ScheduleOfCondensedFinancialStatementsTable" order="10020.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScheduleOfCondensedFinancialStatementsTable" xlink:to="dei_LegalEntityAxis" order="10030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_LegalEntityAxis" xlink:to="dei_EntityDomain" order="10060.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_WillisNorthAmericaIncMember" order="10080.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_EntityDomain" xlink:to="wltw_TrinityAcquisitionPlcMember" order="10100.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScheduleOfCondensedFinancialStatementsTable" xlink:to="srt_ConsolidationItemsAxis" order="10030.02" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsAxis" xlink:to="srt_ConsolidationItemsDomain" order="10140.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="srt_ReportableLegalEntitiesMember" order="10160.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidationItemsDomain" xlink:to="srt_ConsolidationEliminationsMember" order="10220.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScheduleOfCondensedFinancialStatementsTable" xlink:to="srt_ConsolidatedEntitiesAxis" order="10030.04" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidatedEntitiesAxis" xlink:to="srt_ConsolidatedEntitiesDomain" order="10260.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidatedEntitiesDomain" xlink:to="srt_ParentCompanyMember" order="10280.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidatedEntitiesDomain" xlink:to="srt_GuarantorSubsidiariesMember" order="10300.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ConsolidatedEntitiesDomain" xlink:to="srt_NonGuarantorSubsidiariesMember" order="10320.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_ScheduleOfCondensedFinancialStatementsTable" xlink:to="srt_CondensedFinancialStatementsCaptionsLineItems" order="10940.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities" order="10950.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" order="11090.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_PaymentsToAcquireProductiveAssets" order="11370.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_PaymentsToDevelopSoftware" order="11510.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" order="11650.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_ProceedsFromDivestitureOfBusinessesNetOfCashDivested" order="11790.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_PaymentsForProceedsFromOtherInvestingActivities" order="11930.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="wltw_ProceedsFromRepaymentsOfIntercompanyInvestingActivities" order="12070.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="wltw_ProceedsFromRepaymentsOfInvestmentInIntercompanyInvestingActivities" order="12210.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities" order="12350.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" order="12490.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_ProceedsFromRepaymentsOfLinesOfCredit" order="12770.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_ProceedsFromIssuanceOfSeniorLongTermDebt" order="12910.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_ProceedsFromIssuanceOfOtherLongTermDebt" order="13050.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_PaymentsOfDebtIssuanceCosts" order="13190.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_RepaymentsOfLongTermDebt" order="13330.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_PaymentsForRepurchaseOfCommonStock" order="13470.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_ProceedsFromIssuanceOfCommonStock" order="13610.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_PaymentsForRepurchaseOfEquity" order="13750.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="wltw_PaymentsForDeferredContingentConsiderationFinancingActivities" order="13890.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation" order="14030.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_PaymentsOfDividendsCommonStock" order="14170.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_ProceedsFromPaymentsToMinorityShareholders" order="14310.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="wltw_RepaymentsOfIntercompanyFinancingActivities" order="14450.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities" order="14590.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_CashAndCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" order="14730.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/totalLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" order="14870.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue" order="15010.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel"/>
<presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="srt_CondensedFinancialStatementsCaptionsLineItems" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_li0l2" order="15150.00" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel"/>
</presentationLink>
</linkbase>

↑Top
Filing Submission 0001564590-19-004912   –   Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)
Copyright © 2024 Fran Finnegan & Company LLC – All Rights Reserved.
About — Privacy — Redactions — Help — Fri., May 17, 10:13:10.2pm ET