<?xml version="1.0" encoding="UTF-8" standalone="no"?><!--IFFIndAs--><xbrli:xbrl xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2025-01-31/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/IntegratedFinance_IndAS/2025-01-31/in-capmkt/in-capmkt-ent" xmlns:in-capmkt-roles="http://www.sebi.gov.in/xbrl/IntegratedFinance_IndAS/2025-01-31/in-capmkt-roles" xmlns:in-capmkt-types="http://www.sebi.gov.in/xbrl/2025-01-31/in-capmkt-types" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xl="http://www.xbrl.org/2003/XLink" xmlns:xlink="http://www.w3.org/1999/xlink"><link:schemaRef xlink:href="in-capmkt-ent-2025-01-31.xsd" xlink:type="simple"/><xbrli:context id="OneD"><xbrli:entity><xbrli:identifier scheme="http://www.bseindia.com/in-capmkt/ScripCode">540673</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2025-04-01</xbrli:startDate><xbrli:endDate>2025-06-30</xbrli:endDate></xbrli:period></xbrli:context><xbrli:context id="OneExpenses1D"><xbrli:entity><xbrli:identifier scheme="http://www.bseindia.com/in-capmkt/ScripCode">540673</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2025-04-01</xbrli:startDate><xbrli:endDate>2025-06-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:explicitMember dimension="in-capmkt:DetailsOfOtherExpensesAxis">in-capmkt:OtherExpenses1Member</xbrldi:explicitMember></xbrli:scenario></xbrli:context><xbrli:context id="D_ItemsThatWillNotBeReclassifiedToProfitAndLoss11"><xbrli:entity><xbrli:identifier scheme="http://www.bseindia.com/in-capmkt/ScripCode">540673</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2025-04-01</xbrli:startDate><xbrli:endDate>2025-06-30</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ItemsThatWillNotBeReclassifiedToProfitAndLossAxis"><in-capmkt:ItemsThatWillNotBeReclassifiedToProfitAndLossDomain>ItemsThatWillNotBeReclassifiedToProfitAndLoss1</in-capmkt:ItemsThatWillNotBeReclassifiedToProfitAndLossDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:unit id="INR"><xbrli:measure>iso4217:INR</xbrli:measure></xbrli:unit><xbrli:unit id="pure"><xbrli:measure>xbrli:pure</xbrli:measure></xbrli:unit><xbrli:unit id="INRPerShare"><xbrli:divide><xbrli:unitNumerator><xbrli:measure>iso4217:INR</xbrli:measure></xbrli:unitNumerator><xbrli:unitDenominator><xbrli:measure>xbrli:shares</xbrli:measure></xbrli:unitDenominator></xbrli:divide></xbrli:unit><in-capmkt:ScripCode contextRef="OneD">540673</in-capmkt:ScripCode><in-capmkt:Symbol contextRef="OneD">SIS</in-capmkt:Symbol><in-capmkt:MSEISymbol contextRef="OneD">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="OneD">INE285J01028</in-capmkt:ISIN><in-capmkt:NameOfTheCompany contextRef="OneD">SIS LIMITED</in-capmkt:NameOfTheCompany><in-capmkt:TypeOfCompany contextRef="OneD">Main Board</in-capmkt:TypeOfCompany><in-capmkt:ClassOfSecurity contextRef="OneD">Equity</in-capmkt:ClassOfSecurity><in-capmkt:DateOfStartOfFinancialYear contextRef="OneD">2025-04-01</in-capmkt:DateOfStartOfFinancialYear><in-capmkt:DateOfEndOfFinancialYear contextRef="OneD">2026-03-31</in-capmkt:DateOfEndOfFinancialYear><in-capmkt:DateOfBoardMeetingWhenFinancialResultsWereApproved contextRef="OneD">2025-07-30</in-capmkt:DateOfBoardMeetingWhenFinancialResultsWereApproved><in-capmkt:DateOnWhichPriorIntimationOfTheMeetingForConsideringFinancialResultsWasInformedToTheExchange contextRef="OneD">2025-07-17</in-capmkt:DateOnWhichPriorIntimationOfTheMeetingForConsideringFinancialResultsWasInformedToTheExchange><in-capmkt:DescriptionOfPresentationCurrency contextRef="OneD">INR</in-capmkt:DescriptionOfPresentationCurrency><in-capmkt:LevelOfRounding contextRef="OneD">Millions</in-capmkt:LevelOfRounding><in-capmkt:TypeOfReportingPeriod contextRef="OneD">Quarterly</in-capmkt:TypeOfReportingPeriod><in-capmkt:ReportingQuarter contextRef="OneD">First quarter</in-capmkt:ReportingQuarter><in-capmkt:IsCompanyReportingMultisegmentOrSingleSegment contextRef="OneD">Single segment</in-capmkt:IsCompanyReportingMultisegmentOrSingleSegment><in-capmkt:DescriptionOfSingleSegment contextRef="OneD">Security Services</in-capmkt:DescriptionOfSingleSegment><in-capmkt:DateOfStartOfBoardMeeting contextRef="OneD">2025-07-30</in-capmkt:DateOfStartOfBoardMeeting><in-capmkt:StartTimeOfBoardMeeting contextRef="OneD">15:05:00</in-capmkt:StartTimeOfBoardMeeting><in-capmkt:DateOfEndOfBoardMeeting contextRef="OneD">2025-07-30</in-capmkt:DateOfEndOfBoardMeeting><in-capmkt:EndTimeOfBoardMeeting contextRef="OneD">17:00:00</in-capmkt:EndTimeOfBoardMeeting><in-capmkt:DeclarationOfUnmodifiedOpinionOrStatementOnImpactOfAuditQualification contextRef="OneD">Not applicable</in-capmkt:DeclarationOfUnmodifiedOpinionOrStatementOnImpactOfAuditQualification><in-capmkt:WhetherStatementOnDeviationOrVariationForProceedsOfPublicIssueOrRightIssueOrPreferentialIssueOrQIPEtcIsApplicableToTheCompanyForTheCurrentQuarter contextRef="OneD">false</in-capmkt:WhetherStatementOnDeviationOrVariationForProceedsOfPublicIssueOrRightIssueOrPreferentialIssueOrQIPEtcIsApplicableToTheCompanyForTheCurrentQuarter><in-capmkt:WhetherTheDisclosureForTheDefaultOnLoansAndDebtSecuritiesIsApplicableToTheEntity contextRef="OneD">false</in-capmkt:WhetherTheDisclosureForTheDefaultOnLoansAndDebtSecuritiesIsApplicableToTheEntity><in-capmkt:NoteForNonApplicabilityOfTheDisclosureForTheDefaultOnLoansAndDebtSecuritiesToTheEntity contextRef="OneD">There is no instance of default during the reporting period.</in-capmkt:NoteForNonApplicabilityOfTheDisclosureForTheDefaultOnLoansAndDebtSecuritiesToTheEntity><in-capmkt:DateOfStartOfReportingPeriod contextRef="OneD">2025-04-01</in-capmkt:DateOfStartOfReportingPeriod><in-capmkt:DateOfEndOfReportingPeriod contextRef="OneD">2025-06-30</in-capmkt:DateOfEndOfReportingPeriod><in-capmkt:WhetherResultsAreAuditedOrUnaudited contextRef="OneD">Unaudited</in-capmkt:WhetherResultsAreAuditedOrUnaudited><in-capmkt:NatureOfReportStandaloneConsolidated contextRef="OneD">Standalone</in-capmkt:NatureOfReportStandaloneConsolidated><in-capmkt:RevenueFromOperations contextRef="OneD" decimals="-4" unitRef="INR">12891680000</in-capmkt:RevenueFromOperations><in-capmkt:OtherIncome contextRef="OneD" decimals="-4" unitRef="INR">640560000</in-capmkt:OtherIncome><in-capmkt:Income contextRef="OneD" decimals="-4" unitRef="INR">13532240000</in-capmkt:Income><in-capmkt:CostOfMaterialsConsumed contextRef="OneD" decimals="-6" unitRef="INR">0</in-capmkt:CostOfMaterialsConsumed><in-capmkt:PurchasesOfStockInTrade contextRef="OneD" decimals="-4" unitRef="INR">118720000</in-capmkt:PurchasesOfStockInTrade><in-capmkt:ChangesInInventoriesOfFinishedGoodsWorkInProgressAndStockInTrade contextRef="OneD" decimals="-4" unitRef="INR">-8210000</in-capmkt:ChangesInInventoriesOfFinishedGoodsWorkInProgressAndStockInTrade><in-capmkt:EmployeeBenefitExpense contextRef="OneD" decimals="-4" unitRef="INR">11364530000</in-capmkt:EmployeeBenefitExpense><in-capmkt:FinanceCosts contextRef="OneD" decimals="-5" unitRef="INR">242400000</in-capmkt:FinanceCosts><in-capmkt:DepreciationDepletionAndAmortisationExpense contextRef="OneD" decimals="-4" unitRef="INR">160170000</in-capmkt:DepreciationDepletionAndAmortisationExpense><in-capmkt:OtherExpenses contextRef="OneD" decimals="-4" unitRef="INR">691310000</in-capmkt:OtherExpenses><in-capmkt:Expenses contextRef="OneD" decimals="-4" unitRef="INR">12568920000</in-capmkt:Expenses><in-capmkt:ProfitBeforeExceptionalItemsAndTax contextRef="OneD" decimals="-4" unitRef="INR">963320000</in-capmkt:ProfitBeforeExceptionalItemsAndTax><in-capmkt:ExceptionalItemsBeforeTax contextRef="OneD" decimals="-6" unitRef="INR">0</in-capmkt:ExceptionalItemsBeforeTax><in-capmkt:ProfitBeforeTax contextRef="OneD" decimals="-4" unitRef="INR">963320000</in-capmkt:ProfitBeforeTax><in-capmkt:CurrentTax contextRef="OneD" decimals="-5" unitRef="INR">76400000</in-capmkt:CurrentTax><in-capmkt:DeferredTax contextRef="OneD" decimals="-4" unitRef="INR">-24830000</in-capmkt:DeferredTax><in-capmkt:TaxExpense contextRef="OneD" decimals="-4" unitRef="INR">51570000</in-capmkt:TaxExpense><in-capmkt:NetMovementInRegulatoryDeferralAccountBalancesRelatedToProfitOrLossAndTheRelatedDeferredTaxMovement contextRef="OneD" decimals="-6" unitRef="INR">0</in-capmkt:NetMovementInRegulatoryDeferralAccountBalancesRelatedToProfitOrLossAndTheRelatedDeferredTaxMovement><in-capmkt:ProfitLossForPeriodFromContinuingOperations contextRef="OneD" decimals="-4" unitRef="INR">911750000</in-capmkt:ProfitLossForPeriodFromContinuingOperations><in-capmkt:ProfitLossFromDiscontinuedOperationsBeforeTax contextRef="OneD" decimals="-6" unitRef="INR">0</in-capmkt:ProfitLossFromDiscontinuedOperationsBeforeTax><in-capmkt:TaxExpenseOfDiscontinuedOperations contextRef="OneD" decimals="-6" unitRef="INR">0</in-capmkt:TaxExpenseOfDiscontinuedOperations><in-capmkt:ProfitLossFromDiscontinuedOperationsAfterTax contextRef="OneD" decimals="-6" unitRef="INR">0</in-capmkt:ProfitLossFromDiscontinuedOperationsAfterTax><in-capmkt:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod contextRef="OneD" decimals="-6" unitRef="INR">0</in-capmkt:ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod><in-capmkt:ProfitLossForPeriod contextRef="OneD" decimals="-4" unitRef="INR">911750000</in-capmkt:ProfitLossForPeriod><in-capmkt:OtherComprehensiveIncomeNetOfTaxes contextRef="OneD" decimals="-4" unitRef="INR">-25230000</in-capmkt:OtherComprehensiveIncomeNetOfTaxes><in-capmkt:ComprehensiveIncomeForThePeriod contextRef="OneD" decimals="-4" unitRef="INR">886520000</in-capmkt:ComprehensiveIncomeForThePeriod><in-capmkt:PaidUpValueOfEquityShareCapital contextRef="OneD" decimals="-4" unitRef="INR">704810000</in-capmkt:PaidUpValueOfEquityShareCapital><in-capmkt:FaceValueOfEquityShareCapital contextRef="OneD" decimals="INF" unitRef="INRPerShare">5</in-capmkt:FaceValueOfEquityShareCapital><in-capmkt:BasicEarningsLossPerShareFromContinuingOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">6.32</in-capmkt:BasicEarningsLossPerShareFromContinuingOperations><in-capmkt:DilutedEarningsLossPerShareFromContinuingOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">6.29</in-capmkt:DilutedEarningsLossPerShareFromContinuingOperations><in-capmkt:BasicEarningsLossPerShareFromDiscontinuedOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">0</in-capmkt:BasicEarningsLossPerShareFromDiscontinuedOperations><in-capmkt:DilutedEarningsLossPerShareFromDiscontinuedOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">0</in-capmkt:DilutedEarningsLossPerShareFromDiscontinuedOperations><in-capmkt:BasicEarningsLossPerShareFromContinuingAndDiscontinuedOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">6.32</in-capmkt:BasicEarningsLossPerShareFromContinuingAndDiscontinuedOperations><in-capmkt:DilutedEarningsLossPerShareFromContinuingAndDiscontinuedOperations contextRef="OneD" decimals="INF" unitRef="INRPerShare">6.29</in-capmkt:DilutedEarningsLossPerShareFromContinuingAndDiscontinuedOperations><in-capmkt:DebtEquityRatio contextRef="OneD" decimals="INF" unitRef="pure">0.007</in-capmkt:DebtEquityRatio><in-capmkt:DebtServiceCoverageRatio contextRef="OneD" decimals="INF" unitRef="pure">0.0159</in-capmkt:DebtServiceCoverageRatio><in-capmkt:InterestServiceCoverageRatio contextRef="OneD" decimals="INF" unitRef="pure">0.0266</in-capmkt:InterestServiceCoverageRatio><in-capmkt:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock contextRef="OneD">1.	The Statement of unaudited standalone financial results (“the Statement”) of the Company for the quarter ended June 30, 2025 has been reviewed by the Audit Committee and, thereafter, approved by the Board of Directors at its meeting held on July 30, 2025. &lt;BR&gt; 
 &lt;BR&gt; 
2.	The Limited Review, as required under Regulation 33 and 52 read with 63 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, has been completed and the related Report does not have any impact on the 'Results and Notes' for the quarter ended June 30, 2025 which needs to be explained. &lt;BR&gt; 
 &lt;BR&gt; 
3.	The standalone results have been prepared in accordance with the principles and procedures of Indian Accounting Standards (“Ind AS”) as notified under the Companies (Indian Accounting Standards) Rules, 2015 as prescribed in Section 133 of the Companies Act, 2013 read with SEBI Circular No. CIR/CFD/FAC/62/2016 dated July 5, 2016 and other recognized accounting practices and policies. &lt;BR&gt; 
 &lt;BR&gt; 
4.	The Board of Directors of the Company, at its meeting held on March 25, 2025, has approved the proposal for buy-back of fully paid up equity shares up to 37,12,871 equity shares of face value of INR 5/- each of the Company for an aggregate amount not exceeding INR 1,500 million, being 2.57% of the total paid up equity share capital of the Company as on March 21, 2025, at INR 404 per equity share in accordance with the provisions of the Securities and Exchange Board of India (Buy-back of Securities) Regulations, 2018, as amended and the Companies Act, 2013, as amended. The Buyback was approved by the shareholders by means of a special resolution through a postal ballot. The said shares bought back through the tender offer process and were extinguished on June 26, 2025. The Company funded the buyback from its free reserves as required under the said regulations. Consequently, 37,12,871 equity shares of face value of INR 5 each were extinguished by appropriating a sum of INR 1,481.44 million from the securities premium and an amount of INR 18.56 million, equivalent to the nominal value of the equity shares bought back through the buyback, have been transferred to the capital redemption reserve account. &lt;BR&gt; 
 &lt;BR&gt; 
5.	During the quarter ended June 30, 2025, upon exercise of vested stock options by the eligible employees, the Company has allotted 1,80,458 equity shares of INR 5 each. Consequent to said allotment, the paid-up equity share capital of the Company stands at INR 704,175,235 divided into 140,835,047 equity shares of INR 5 each. &lt;BR&gt; 
 &lt;BR&gt; 
6.	The figures for the quarter ended March 31, 2025, represent the difference between the audited figures in respect of the full financial year and the published figures for the nine-month ended December 31, 2024, which were subject to limited review. &lt;BR&gt; 
 &lt;BR&gt; 
7.	In accordance with IND-AS 108, Operating segments, segment information has been provided in the unaudited consolidated financial results of the Group and, therefore, no separate disclosure on segment information is given in this unaudited standalone financial result.  &lt;BR&gt; 
</in-capmkt:DisclosureOfNotesOnFinancialResultsExplanatoryTextBlock><in-capmkt:DescriptionOfOtherExpenses contextRef="OneExpenses1D">Other Expenses</in-capmkt:DescriptionOfOtherExpenses><in-capmkt:OtherExpenses contextRef="OneExpenses1D" decimals="-4" unitRef="INR">691310000</in-capmkt:OtherExpenses><in-capmkt:DescriptionOfItemThatWillNotBeReclassifiedToProfitAndLoss contextRef="D_ItemsThatWillNotBeReclassifiedToProfitAndLoss11">Re-measurement of defined benefit plan</in-capmkt:DescriptionOfItemThatWillNotBeReclassifiedToProfitAndLoss><in-capmkt:AmountOfItemThatWillNotBeReclassifiedToProfitAndLoss contextRef="D_ItemsThatWillNotBeReclassifiedToProfitAndLoss11" decimals="-4" unitRef="INR">-33710000</in-capmkt:AmountOfItemThatWillNotBeReclassifiedToProfitAndLoss><in-capmkt:AmountOfItemThatWillNotBeReclassifiedToProfitAndLoss contextRef="OneD" decimals="-4" unitRef="INR">-33710000</in-capmkt:AmountOfItemThatWillNotBeReclassifiedToProfitAndLoss><in-capmkt:IncomeTaxRelatingToItemsThatWillNotBeReclassifiedToProfitOrLoss contextRef="OneD" decimals="-4" unitRef="INR">-8480000</in-capmkt:IncomeTaxRelatingToItemsThatWillNotBeReclassifiedToProfitOrLoss><in-capmkt:IncomeTaxRelatingToItemsThatWillBeReclassifiedToProfitOrLoss contextRef="OneD" decimals="-6" unitRef="INR">0</in-capmkt:IncomeTaxRelatingToItemsThatWillBeReclassifiedToProfitOrLoss><in-capmkt:OtherComprehensiveIncome contextRef="OneD" decimals="-4" unitRef="INR">-25230000</in-capmkt:OtherComprehensiveIncome></xbrli:xbrl>