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<!-- Creation Date :2023-02-24T11:38:19.2041+00:00 -->
<!-- Copyright (c) 2023 Donnelly Financial Solutions, Inc. All Rights Reserved. -->
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  <xsd:element id="wtw_IncomeTaxReconciliationBaseErosionAntiAbuseTax" name="IncomeTaxReconciliationBaseErosionAntiAbuseTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="wtw_IncreaseDecreaseInProvisionForLiabilities" name="IncreaseDecreaseInProvisionForLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="wtw_LeaseLiability" name="LeaseLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LeaseLiabilityCurrent" name="LeaseLiabilityCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LeaseLiabilityNoncurrent" name="LeaseLiabilityNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LeaseLiabilityPaymentsDue" name="LeaseLiabilityPaymentsDue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LeaseLiabilityPaymentsDueAfterYearFive" name="LeaseLiabilityPaymentsDueAfterYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LeaseLiabilityPaymentsDueNextTwelveMonths" name="LeaseLiabilityPaymentsDueNextTwelveMonths" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LeaseLiabilityPaymentsDueYearFive" name="LeaseLiabilityPaymentsDueYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LeaseLiabilityPaymentsDueYearFour" name="LeaseLiabilityPaymentsDueYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LeaseLiabilityPaymentsDueYearThree" name="LeaseLiabilityPaymentsDueYearThree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LeaseLiabilityPaymentsDueYearTwo" name="LeaseLiabilityPaymentsDueYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LeaseLiabilityUndiscountedExcessAmount" name="LeaseLiabilityUndiscountedExcessAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LeasePayment" name="LeasePayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LeaseRightOfUseAsset" name="LeaseRightOfUseAsset" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="wtw_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentDeferredRevenueAndAccruedExpenses" name="LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentDeferredRevenueAndAccruedExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentFiduciaryLiabilities" name="LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentFiduciaryLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentLeaseLiabilities" name="LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentLeaseLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentLiabilityForPensionBenefits" name="LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentLiabilityForPensionBenefits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentOtherLiabilities" name="LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentOtherLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentProvisionForLiabilities" name="LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrentProvisionForLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_MaximumAnnualSalaryAmount" name="MaximumAnnualSalaryAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="wtw_MaximumExpectedServicePeriod" name="MaximumExpectedServicePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_MiscellaneousOtherNonOperatingIncomeExpense" name="MiscellaneousOtherNonOperatingIncomeExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_NetPaymentsProceedsFromFiduciaryFundsHeldForClients" name="NetPaymentsProceedsFromFiduciaryFundsHeldForClients" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_NonCashOrPartNonCashAcquisitionFairValueOfDeferredAndContingentConsideration" name="NonCashOrPartNonCashAcquisitionFairValueOfDeferredAndContingentConsideration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_OpenTaxYears" name="OpenTaxYears" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_OtherComprehensiveIncomeLossCurtailmentGainOfPensionAndNonPensionPostretirementPlanValuationBeforeTax" name="OtherComprehensiveIncomeLossCurtailmentGainOfPensionAndNonPensionPostretirementPlanValuationBeforeTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_OtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNonredeemableNoncontrollingInterest" name="OtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNonredeemableNoncontrollingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_OtherCurrentLiabilitiesExcludedFromHeldForSale" name="OtherCurrentLiabilitiesExcludedFromHeldForSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_PaymentsForProceedsFromSaleOfOperations" name="PaymentsForProceedsFromSaleOfOperations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_PaymentsToAcquireFixedAssetsAndSoftwareForInternalUse" name="PaymentsToAcquireFixedAssetsAndSoftwareForInternalUse" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_PayrollAndOtherBenefitsRelatedLiabilities" name="PayrollAndOtherBenefitsRelatedLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_PercentageOfLeaseDenominatedInMajorCurrencies" name="PercentageOfLeaseDenominatedInMajorCurrencies" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="wtw_PercentageOfVotingRights" name="PercentageOfVotingRights" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_PercentOfMinimumTaxForTaxableIncomeAdjusted" name="PercentOfMinimumTaxForTaxableIncomeAdjusted" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_PortionOfRevenue" name="PortionOfRevenue" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_PrepaidBonusesCurrent" name="PrepaidBonusesCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="wtw_PrepaidExpenseAndAccruedRevenueReceivableCurrent" name="PrepaidExpenseAndAccruedRevenueReceivableCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="wtw_PrepaidExpenseAndAccruedRevenueReceivableNoncurrent" name="PrepaidExpenseAndAccruedRevenueReceivableNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="wtw_PropertyPlantAndEquipmentAcquisitions" name="PropertyPlantAndEquipmentAcquisitions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="wtw_PropertyPlantAndEquipmentIncreaseDecreaseDueToForeignExchange" name="PropertyPlantAndEquipmentIncreaseDecreaseDueToForeignExchange" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="wtw_ProvisionForLiabilitiesNonCurrent" name="ProvisionForLiabilitiesNonCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_ReimbursableExpensesAndOther" name="ReimbursableExpensesAndOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_RepaymentOfPrincipalAndInterestOutstanding" name="RepaymentOfPrincipalAndInterestOutstanding" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="wtw_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedinPeriodWeightedAverageGrantDateSharePrice" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedinPeriodWeightedAverageGrantDateSharePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPriorPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPriorPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_TaxExemptIncomeOnGainLossOnSaleOfBusiness" name="TaxExemptIncomeOnGainLossOnSaleOfBusiness" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_TaxOnUnremittedEarningsNetOfForeignTaxCredits" name="TaxOnUnremittedEarningsNetOfForeignTaxCredits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="wtw_TermForRenewalCommissionsExpected" name="TermForRenewalCommissionsExpected" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_UnrecognizedTaxBenefitsIncludingInterest" name="UnrecognizedTaxBenefitsIncludingInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_UnrecognizedTaxBenefitsOtherIncreaseDecrease" name="UnrecognizedTaxBenefitsOtherIncreaseDecrease" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_ValuationAllowancesAndReservesForeignExchangeDifferences" name="ValuationAllowancesAndReservesForeignExchangeDifferences" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="wtw_BalanceSheetDateDomain" name="BalanceSheetDateDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_DefinedContributionPlanTranchesDomain" name="DefinedContributionPlanTranchesDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_EmployeeStatusDomain" name="EmployeeStatusDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_CompensationAndRetirementDisclosureLineItems" name="CompensationAndRetirementDisclosureLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_IncomeFromContinuingOperationsBeforeIncomeTaxesAndInterestInEarningsOfAssociatesLineItems" name="IncomeFromContinuingOperationsBeforeIncomeTaxesAndInterestInEarningsOfAssociatesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" name="SignificantAccountingPoliciesAndRecentAccountingPronouncementsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_A2012EquityIncentivePlanMember" name="A2012EquityIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_AcquisitionCostsAdjustmentMember" name="AcquisitionCostsAdjustmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_AonPlcMember" name="AonPlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_BaseErosionAntiAbuseTaxMember" name="BaseErosionAntiAbuseTaxMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_BenefitsDeliveryAndAdministrationMember" name="BenefitsDeliveryAndAdministrationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_BookOfBusinessSettlementsMember" name="BookOfBusinessSettlementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_BrokingMember" name="BrokingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_CapitalExpendituresMember" name="CapitalExpendituresMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_CARESMember" name="CARESMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_CertificatesOfDepositAndTermDepositsMember" name="CertificatesOfDepositAndTermDepositsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_CollateralizedFacilityMember" name="CollateralizedFacilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_CommingledFundsMember" name="CommingledFundsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_ConsultingMember" name="ConsultingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_ContinuingOperationMember" name="ContinuingOperationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_CorporateRiskAndBrokingMember" name="CorporateRiskAndBrokingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_CumulativeCostsMember" name="CumulativeCostsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_December312020Member" name="December312020Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_December312021Member" name="December312021Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_DeferredTaxLiabilitiesMember" name="DeferredTaxLiabilitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_DefinedContributionPlanTrancheOneMember" name="DefinedContributionPlanTrancheOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_DefinedContributionPlanTrancheTwoMember" name="DefinedContributionPlanTrancheTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_DelawareActionMember" name="DelawareActionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_DivestedBusinessesMember" name="DivestedBusinessesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_EURODenominatedMember" name="EURODenominatedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_FederalActionMember" name="FederalActionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_FederalAndForeignTaxAuthorityMember" name="FederalAndForeignTaxAuthorityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_FederalFundsEffectiveRateMember" name="FederalFundsEffectiveRateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_FiduciaryAssetsMember" name="FiduciaryAssetsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_FiduciaryMember" name="FiduciaryMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_ForeignCountriesMember" name="ForeignCountriesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_ForeignExchangeRemeasurementOnIncomeTaxAccountBalancesMember" name="ForeignExchangeRemeasurementOnIncomeTaxAccountBalancesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_GallagherMember" name="GallagherMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_GreatBritainMember" name="GreatBritainMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_HealthWealthAndCareerMember" name="HealthWealthAndCareerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_HealthWealthCareerSegmentMember" name="HealthWealthCareerSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_HumanCapitalAndBenefitsMember" name="HumanCapitalAndBenefitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_InsuranceContractsMember" name="InsuranceContractsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_InterestOnSeniorNotesMember" name="InterestOnSeniorNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_InternallyDevelopedSoftwareAssetMember" name="InternallyDevelopedSoftwareAssetMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_InternationalMember" name="InternationalMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_InvestmentInMultipleEmployerPensionPlanMember" name="InvestmentInMultipleEmployerPensionPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_InvestmentRiskAndReinsuranceMember" name="InvestmentRiskAndReinsuranceMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_MaxMatthiessenMember" name="MaxMatthiessenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_MillerMember" name="MillerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_NewlyEligibleEmployeesMember" name="NewlyEligibleEmployeesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
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  <xsd:element id="wtw_NonFiduciaryMember" name="NonFiduciaryMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_OneYearTermLoanFacilityDue2016Member" name="OneYearTermLoanFacilityDue2016Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_OneYearTermLoanFacilityDue2016TrancheTwoMember" name="OneYearTermLoanFacilityDue2016TrancheTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_OneYearTermLoanMember" name="OneYearTermLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_OrdinaryShareOneMember" name="OrdinaryShareOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_OtherAcquisitionsMember" name="OtherAcquisitionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_OtherForeignPlansMember" name="OtherForeignPlansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_OutsourcedAdministrationMember" name="OutsourcedAdministrationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_PerformanceBasedStockOptionsMember" name="PerformanceBasedStockOptionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_PhantomRestrictedStockUnitsMember" name="PhantomRestrictedStockUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_ProcessOptimizationMember" name="ProcessOptimizationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_ProjectedAnnualCostSavingsByEndOf2024Member" name="ProjectedAnnualCostSavingsByEndOf2024Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_RealEstateRationalizationMember" name="RealEstateRationalizationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_RedeemableNoncontrollingInterestMember" name="RedeemableNoncontrollingInterestMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_ReimbursedExpensesMember" name="ReimbursedExpensesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_ReinvestedIndefinitelyMember" name="ReinvestedIndefinitelyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_RemeasurementOfDeferredTaxAssetsAndLiabilitiesMember" name="RemeasurementOfDeferredTaxAssetsAndLiabilitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_RestOfWorldMember" name="RestOfWorldMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_RevenueMember" name="RevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_Revolving125BillionDollarCreditFacilityMember" name="Revolving125BillionDollarCreditFacilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_Revolving15BillionDollarCreditFacilityMember" name="Revolving15BillionDollarCreditFacilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_Revolving800MillionDollarCreditFacilityMember" name="Revolving800MillionDollarCreditFacilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_RiskAndBrokingMember" name="RiskAndBrokingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_SalariesAndBenefitsMember" name="SalariesAndBenefitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_SeniorNotesDue2016Member" name="SeniorNotesDue2016Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_SeniorNotesDue20190700Member" name="SeniorNotesDue20190700Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
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  <xsd:element id="wtw_SeniorNotesDue2021and2026Member" name="SeniorNotesDue2021and2026Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_SeniorNotesDue202202125Member" name="SeniorNotesDue202202125Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_SeniorNotesDue202304625Member" name="SeniorNotesDue202304625Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_SeniorNotesDue202403600Member" name="SeniorNotesDue202403600Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
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  <xsd:element id="wtw_SeniorNotesDue2028045Member" name="SeniorNotesDue2028045Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_SeniorNotesDue202902950Member" name="SeniorNotesDue202902950Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
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  <xsd:element id="wtw_TaxExemptionOnGainOnDisposalOfDiscontinuedOperationsMember" name="TaxExemptionOnGainOnDisposalOfDiscontinuedOperationsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TaxYear2019And2020Member" name="TaxYear2019And2020Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TaxYear2022Through2041Member" name="TaxYear2022Through2041Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TaxYear2023Through2042Member" name="TaxYear2023Through2042Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TechnologyModernizationMember" name="TechnologyModernizationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TerminationOfProposedCombinationWithAONPlcMember" name="TerminationOfProposedCombinationWithAONPlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TerminationPaymentMember" name="TerminationPaymentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TermLoanDueDecember2019Member" name="TermLoanDueDecember2019Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TermLoanFacilityMember" name="TermLoanFacilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TermLoanMember" name="TermLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TimeBasedStockOptionsMember" name="TimeBasedStockOptionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TowersWatsonCoMember" name="TowersWatsonCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TransactionIntegrationExpenseMember" name="TransactionIntegrationExpenseMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TransformationProgramMember" name="TransformationProgramMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TransitionServicesAgreementMember" name="TransitionServicesAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TRANZACTAcquisitionMember" name="TRANZACTAcquisitionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TranzactCollateralizedFacilityMember" name="TranzactCollateralizedFacilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TridentVParallelFundMember" name="TridentVParallelFundMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_TrinityAcquisitionPlcMember" name="TrinityAcquisitionPlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_UntaxableMannerMember" name="UntaxableMannerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_USStateMember" name="USStateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_WesternEuropeMember" name="WesternEuropeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_WillisLimitedMember" name="WillisLimitedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_WillisMember" name="WillisMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_WillisReMember" name="WillisReMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_WillisTowersWatsonMember" name="WillisTowersWatsonMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_WillisTowersWatsonMergerRelatedSecuritiesLitigationMember" name="WillisTowersWatsonMergerRelatedSecuritiesLitigationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_WillisTowersWatsonPublicLimitedCompanyMember" name="WillisTowersWatsonPublicLimitedCompanyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_CompensationAndRetirementDisclosureTable" name="CompensationAndRetirementDisclosureTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_IncomeFromContinuingOperationsBeforeIncomeTaxesAndInterestInEarningsOfAssociatesTable" name="IncomeFromContinuingOperationsBeforeIncomeTaxesAndInterestInEarningsOfAssociatesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_SignificantAccountingPoliciesAndRecentAccountingPronouncementsTable" name="SignificantAccountingPoliciesAndRecentAccountingPronouncementsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="wtw_FiduciaryAssetsAndFiduciaryLiabilitiesPolicyTextBlock" name="FiduciaryAssetsAndFiduciaryLiabilitiesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_GoingConcernPolicyTextBlock" name="GoingConcernPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_LesseeOperatingAndFinanceLeaseDisclosureTextBlock" name="LesseeOperatingAndFinanceLeaseDisclosureTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_LesseeOperatingAndFinanceLeaseLiabilityMaturityTableTextBlock" name="LesseeOperatingAndFinanceLeaseLiabilityMaturityTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_OtherLegislationPolicyTextBlock" name="OtherLegislationPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_ProvisionsForLiabilitiesTableTextBlock" name="ProvisionsForLiabilitiesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_RiskAndUncertaintiesPolicyTextBlock" name="RiskAndUncertaintiesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_RollforwardOfLiabilityAssociatedWithCashBasedChargesTableTextBlock" name="RollforwardOfLiabilityAssociatedWithCashBasedChargesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_ScheduleOfCashPaidForAmountInMeasurementOfLeaseLiabilitiesTableTextBlock" name="ScheduleOfCashPaidForAmountInMeasurementOfLeaseLiabilitiesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_ScheduleOfFinanceLeasedAssetsTableTextBlock" name="ScheduleOfFinanceLeasedAssetsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_ScheduleOfFiniteLivedIntangibleAssetsAmortizationBasisAndExpectedLifeTableTextBlock" name="ScheduleOfFiniteLivedIntangibleAssetsAmortizationBasisAndExpectedLifeTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_ScheduleOfLeaseTableTextBlock" name="ScheduleOfLeaseTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_ScheduleOfNetPlanInvestmentsReconciliationToTotalFairValueOfPlanAssetsTableTextBlock" name="ScheduleOfNetPlanInvestmentsReconciliationToTotalFairValueOfPlanAssetsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_ScheduleOfProjectedPensionContributionsTableTextBlock" name="ScheduleOfProjectedPensionContributionsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_ScheduleOfShareBasedPaymentAwardRestrictedStockUnitsValuationAssumptionsTableTextBlock" name="ScheduleOfShareBasedPaymentAwardRestrictedStockUnitsValuationAssumptionsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_ScheduleOfWeightedAverageTermAndDiscountRatesForOperatingAndFinanceLeaseTableTextBlock" name="ScheduleOfWeightedAverageTermAndDiscountRatesForOperatingAndFinanceLeaseTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="wtw_SummaryOfEntitiesTableTextBlock" name="SummaryOfEntitiesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
</xsd:schema>
