<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:b77b8436-91d3-4da9-9b7f-dc172de4e77b,g:55968d97-048a-46a5-b3f0-ff169ffb2336-->
<link: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">
  <link:arcroleRef arcroleURI="https://xbrl.org/2023/arcrole/summation-item" xlink:type="simple" xlink:href="https://www.xbrl.org/2023/calculation-1.1.xsd#summation-item"/>
  <link:roleRef roleURI="http://bcspeakers.com/role/Statementoffinancialpositioncurrentnoncurrent" xlink:type="simple" xlink:href="bcs-2024-12-31.xsd#Statementoffinancialpositioncurrentnoncurrent"/>
  <link:calculationLink xlink:role="http://bcspeakers.com/role/Statementoffinancialpositioncurrentnoncurrent" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Assets_3405844e-4cb9-4bce-b08f-477f5a2f48cf" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentAssets_efdc32bb-7073-4838-a02e-5507097014e8" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentAssets"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_Assets_3405844e-4cb9-4bce-b08f-477f5a2f48cf" xlink:to="loc_ifrs-full_NoncurrentAssets_efdc32bb-7073-4838-a02e-5507097014e8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssets_841c090d-2b66-4523-91f6-b5ad1a95b831" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentAssets"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_Assets_3405844e-4cb9-4bce-b08f-477f5a2f48cf" xlink:to="loc_ifrs-full_CurrentAssets_841c090d-2b66-4523-91f6-b5ad1a95b831" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentAssets_1ed3da92-21ba-4ada-ad9f-3e7d572b36af" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Inventories_181118f1-882f-4490-aed6-c39d30efc377" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Inventories"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets_1ed3da92-21ba-4ada-ad9f-3e7d572b36af" xlink:to="loc_ifrs-full_Inventories_181118f1-882f-4490-aed6-c39d30efc377" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentTradeReceivables_f3c24c6c-8c16-4f32-be37-21fb7185ea58" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentTradeReceivables"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets_1ed3da92-21ba-4ada-ad9f-3e7d572b36af" xlink:to="loc_ifrs-full_CurrentTradeReceivables_f3c24c6c-8c16-4f32-be37-21fb7185ea58" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentTaxAssetsCurrent_f81cfa13-f90b-408d-9a52-e71c0fe283f0" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentTaxAssetsCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets_1ed3da92-21ba-4ada-ad9f-3e7d572b36af" xlink:to="loc_ifrs-full_CurrentTaxAssetsCurrent_f81cfa13-f90b-408d-9a52-e71c0fe283f0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCurrentAssets_fb84818e-5e09-490a-9d2d-075389617387" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherCurrentAssets"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets_1ed3da92-21ba-4ada-ad9f-3e7d572b36af" xlink:to="loc_ifrs-full_OtherCurrentAssets_fb84818e-5e09-490a-9d2d-075389617387" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalents_00550a9b-2bed-4818-b33c-92e3cfdeae36" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashAndCashEquivalents"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentAssets_1ed3da92-21ba-4ada-ad9f-3e7d572b36af" xlink:to="loc_ifrs-full_CashAndCashEquivalents_00550a9b-2bed-4818-b33c-92e3cfdeae36" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAttributableToOwnersOfParent_2082c281-e0ef-4e93-9b11-68ba3eebb523" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityAttributableToOwnersOfParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IssuedCapital_f502d0f4-0808-4e2c-95a2-113c6c8600e5" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IssuedCapital"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParent_2082c281-e0ef-4e93-9b11-68ba3eebb523" xlink:to="loc_ifrs-full_IssuedCapital_f502d0f4-0808-4e2c-95a2-113c6c8600e5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherReserves_f7237949-dc48-40a7-ad20-0ce0840cae3a" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherReserves"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParent_2082c281-e0ef-4e93-9b11-68ba3eebb523" xlink:to="loc_ifrs-full_OtherReserves_f7237949-dc48-40a7-ad20-0ce0840cae3a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ReserveOfExchangeDifferencesOnTranslation_36e3e57d-1a0b-49f2-a560-af5d1d8bce8d" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ReserveOfExchangeDifferencesOnTranslation"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParent_2082c281-e0ef-4e93-9b11-68ba3eebb523" xlink:to="loc_ifrs-full_ReserveOfExchangeDifferencesOnTranslation_36e3e57d-1a0b-49f2-a560-af5d1d8bce8d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RetainedEarnings_8a649afc-3049-4f5d-96f9-a2859c87c352" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RetainedEarnings"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_EquityAttributableToOwnersOfParent_2082c281-e0ef-4e93-9b11-68ba3eebb523" xlink:to="loc_ifrs-full_RetainedEarnings_8a649afc-3049-4f5d-96f9-a2859c87c352" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentAssets_8aaaf04b-6f49-43c0-b1aa-061a3e5069f4" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PropertyPlantAndEquipment_caa96bd9-5c71-4148-acad-a523cbd1e552" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_8aaaf04b-6f49-43c0-b1aa-061a3e5069f4" xlink:to="loc_ifrs-full_PropertyPlantAndEquipment_caa96bd9-5c71-4148-acad-a523cbd1e552" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RightofuseAssets_fcc62141-5cc8-4765-8b6e-9dcc39e4d515" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RightofuseAssets"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_8aaaf04b-6f49-43c0-b1aa-061a3e5069f4" xlink:to="loc_ifrs-full_RightofuseAssets_fcc62141-5cc8-4765-8b6e-9dcc39e4d515" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Goodwill_976b9acd-e521-40d6-82be-270c35bcfe23" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Goodwill"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_8aaaf04b-6f49-43c0-b1aa-061a3e5069f4" xlink:to="loc_ifrs-full_Goodwill_976b9acd-e521-40d6-82be-270c35bcfe23" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherIntangibleAssets_cbf8d79d-3520-49be-84f1-195ef67fc7d5" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherIntangibleAssets"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_8aaaf04b-6f49-43c0-b1aa-061a3e5069f4" xlink:to="loc_ifrs-full_OtherIntangibleAssets_cbf8d79d-3520-49be-84f1-195ef67fc7d5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InvestmentAccountedForUsingEquityMethod_8091b87c-ff47-4f73-bc70-bee43c029f9c" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InvestmentAccountedForUsingEquityMethod"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_8aaaf04b-6f49-43c0-b1aa-061a3e5069f4" xlink:to="loc_ifrs-full_InvestmentAccountedForUsingEquityMethod_8091b87c-ff47-4f73-bc70-bee43c029f9c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DeferredTaxAssets_2d3790ac-37d0-4f81-be56-12110dbeab77" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DeferredTaxAssets"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_8aaaf04b-6f49-43c0-b1aa-061a3e5069f4" xlink:to="loc_ifrs-full_DeferredTaxAssets_2d3790ac-37d0-4f81-be56-12110dbeab77" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherNoncurrentAssets_78a2aba8-bbb9-418e-b05d-14d630d58f7d" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherNoncurrentAssets"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentAssets_8aaaf04b-6f49-43c0-b1aa-061a3e5069f4" xlink:to="loc_ifrs-full_OtherNoncurrentAssets_78a2aba8-bbb9-418e-b05d-14d630d58f7d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilities_34eba7ec-4023-4cf5-a409-56bb4ff16ac6" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings_01422016-697f-4c94-ada2-feaa0a904831" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentLiabilities_34eba7ec-4023-4cf5-a409-56bb4ff16ac6" xlink:to="loc_ifrs-full_CurrentBorrowingsAndCurrentPortionOfNoncurrentBorrowings_01422016-697f-4c94-ada2-feaa0a904831" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLeaseLiabilities_1f0ec2d2-b58f-4834-8600-d9e927874b40" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentLeaseLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentLiabilities_34eba7ec-4023-4cf5-a409-56bb4ff16ac6" xlink:to="loc_ifrs-full_CurrentLeaseLiabilities_1f0ec2d2-b58f-4834-8600-d9e927874b40" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherCurrentLiabilities_56dbe416-cf3d-4378-bcca-53e6702fc1c0" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherCurrentLiabilities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentLiabilities_34eba7ec-4023-4cf5-a409-56bb4ff16ac6" xlink:to="loc_ifrs-full_OtherCurrentLiabilities_56dbe416-cf3d-4378-bcca-53e6702fc1c0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentTaxLiabilities_f6a4cdd5-a86e-420e-989a-039fdfc95cf4" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentTaxLiabilities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentLiabilities_34eba7ec-4023-4cf5-a409-56bb4ff16ac6" xlink:to="loc_ifrs-full_CurrentTaxLiabilities_f6a4cdd5-a86e-420e-989a-039fdfc95cf4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_86f3221b-6776-4025-9668-bd0057bf35b3" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CurrentLiabilities_34eba7ec-4023-4cf5-a409-56bb4ff16ac6" xlink:to="loc_ifrs-full_TradeAndOtherCurrentPayablesToTradeSuppliers_86f3221b-6776-4025-9668-bd0057bf35b3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity_8423ceb4-95c7-41db-b28d-956d74eb3f73" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Equity"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAttributableToOwnersOfParent_266aa2c4-0694-4ca3-9b84-1c10363a9d21" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityAttributableToOwnersOfParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_Equity_8423ceb4-95c7-41db-b28d-956d74eb3f73" xlink:to="loc_ifrs-full_EquityAttributableToOwnersOfParent_266aa2c4-0694-4ca3-9b84-1c10363a9d21" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncontrollingInterests_a773d4f4-212f-453a-b68b-f5ce5161340d" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncontrollingInterests"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_Equity_8423ceb4-95c7-41db-b28d-956d74eb3f73" xlink:to="loc_ifrs-full_NoncontrollingInterests_a773d4f4-212f-453a-b68b-f5ce5161340d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EquityAndLiabilities_38c1cc89-6026-49d4-9368-1f91153f8e38" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EquityAndLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Equity_ff1e642a-9e00-48e9-b541-9a525fd7f55e" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Equity"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_EquityAndLiabilities_38c1cc89-6026-49d4-9368-1f91153f8e38" xlink:to="loc_ifrs-full_Equity_ff1e642a-9e00-48e9-b541-9a525fd7f55e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLiabilities_7b2a7490-9f30-4451-a203-b45209809252" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_EquityAndLiabilities_38c1cc89-6026-49d4-9368-1f91153f8e38" xlink:to="loc_ifrs-full_NoncurrentLiabilities_7b2a7490-9f30-4451-a203-b45209809252" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CurrentLiabilities_1c1d5766-d5c2-4ace-bf17-bdeeeb56e68c" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentLiabilities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_EquityAndLiabilities_38c1cc89-6026-49d4-9368-1f91153f8e38" xlink:to="loc_ifrs-full_CurrentLiabilities_1c1d5766-d5c2-4ace-bf17-bdeeeb56e68c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLiabilities_90380234-aafb-498d-bc51-e7ebfac4e56f" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentLiabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentPortionOfOtherNoncurrentBorrowings_30e2a4a1-dbe8-46a7-9595-0cd3ac80aaeb" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentPortionOfOtherNoncurrentBorrowings"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentLiabilities_90380234-aafb-498d-bc51-e7ebfac4e56f" xlink:to="loc_ifrs-full_NoncurrentPortionOfOtherNoncurrentBorrowings_30e2a4a1-dbe8-46a7-9595-0cd3ac80aaeb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentLeaseLiabilities_51eb369c-0314-4d3a-85cd-250cd69a8f9e" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentLeaseLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentLiabilities_90380234-aafb-498d-bc51-e7ebfac4e56f" xlink:to="loc_ifrs-full_NoncurrentLeaseLiabilities_51eb369c-0314-4d3a-85cd-250cd69a8f9e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentProvisionsForEmployeeBenefits_3b126343-69a3-4993-a6ee-6c92754e0214" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentProvisionsForEmployeeBenefits"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentLiabilities_90380234-aafb-498d-bc51-e7ebfac4e56f" xlink:to="loc_ifrs-full_NoncurrentProvisionsForEmployeeBenefits_3b126343-69a3-4993-a6ee-6c92754e0214" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_NoncurrentProvisions_9cbf1393-3644-4d84-a2fe-2c8cb299bb4b" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentProvisions"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_NoncurrentLiabilities_90380234-aafb-498d-bc51-e7ebfac4e56f" xlink:to="loc_ifrs-full_NoncurrentProvisions_9cbf1393-3644-4d84-a2fe-2c8cb299bb4b" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://bcspeakers.com/role/Statementofcomprehensiveincomeprofitorlossbyfunctionofexpense" xlink:type="simple" xlink:href="bcs-2024-12-31.xsd#Statementofcomprehensiveincomeprofitorlossbyfunctionofexpense"/>
  <link:calculationLink xlink:role="http://bcspeakers.com/role/Statementofcomprehensiveincomeprofitorlossbyfunctionofexpense" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLoss_eb53bcd5-f61a-46ac-b5ce-9443180a53d3" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossAttributableToOwnersOfParent_b50334a9-5efc-4b80-890b-e82cac2ad22a" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossAttributableToOwnersOfParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLoss_eb53bcd5-f61a-46ac-b5ce-9443180a53d3" xlink:to="loc_ifrs-full_ProfitLossAttributableToOwnersOfParent_b50334a9-5efc-4b80-890b-e82cac2ad22a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossAttributableToNoncontrollingInterests_e7b80e96-9b64-4f30-84f7-51a580a469f7" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossAttributableToNoncontrollingInterests"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLoss_eb53bcd5-f61a-46ac-b5ce-9443180a53d3" xlink:to="loc_ifrs-full_ProfitLossAttributableToNoncontrollingInterests_e7b80e96-9b64-4f30-84f7-51a580a469f7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncome_7a691d7c-bc84-4e86-86c2-4a68b1204f4f" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncome"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_178cb84e-9eed-40af-8e98-00787fc47395" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ComprehensiveIncome_7a691d7c-bc84-4e86-86c2-4a68b1204f4f" xlink:to="loc_ifrs-full_ComprehensiveIncomeAttributableToOwnersOfParent_178cb84e-9eed-40af-8e98-00787fc47395" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests_4da73bf3-636d-4787-9b8d-f97920896b61" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ComprehensiveIncome_7a691d7c-bc84-4e86-86c2-4a68b1204f4f" xlink:to="loc_ifrs-full_ComprehensiveIncomeAttributableToNoncontrollingInterests_4da73bf3-636d-4787-9b8d-f97920896b61" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossBeforeTax_af6371a4-55a8-4363-bcc6-c4cf7b238035" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossBeforeTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities_4852c63f-4ee7-4f3e-8ec0-43af53d71011" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossFromOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossBeforeTax_af6371a4-55a8-4363-bcc6-c4cf7b238035" xlink:to="loc_ifrs-full_ProfitLossFromOperatingActivities_4852c63f-4ee7-4f3e-8ec0-43af53d71011" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_f35c26af-7bd0-4fcf-931a-74c96a9f9adf" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossBeforeTax_af6371a4-55a8-4363-bcc6-c4cf7b238035" xlink:to="loc_ifrs-full_ShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_f35c26af-7bd0-4fcf-931a-74c96a9f9adf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinanceCosts_51ffc319-32d1-4d75-a95c-0814bd6612b3" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinanceCosts"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossBeforeTax_af6371a4-55a8-4363-bcc6-c4cf7b238035" xlink:to="loc_ifrs-full_FinanceCosts_51ffc319-32d1-4d75-a95c-0814bd6612b3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_FinanceIncome_6e1208a2-ce13-465b-b01f-5949fd4143f1" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_FinanceIncome"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossBeforeTax_af6371a4-55a8-4363-bcc6-c4cf7b238035" xlink:to="loc_ifrs-full_FinanceIncome_6e1208a2-ce13-465b-b01f-5949fd4143f1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossFromOperatingActivities_8c95e302-c3a6-4165-804e-fafc4368f667" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossFromOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_Revenue_17f626ca-112c-423a-a678-a32628bf58e4" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Revenue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities_8c95e302-c3a6-4165-804e-fafc4368f667" xlink:to="loc_ifrs-full_Revenue_17f626ca-112c-423a-a678-a32628bf58e4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CostOfSales_01efca95-0098-46f9-9eac-5ff3840ea85b" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CostOfSales"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities_8c95e302-c3a6-4165-804e-fafc4368f667" xlink:to="loc_ifrs-full_CostOfSales_01efca95-0098-46f9-9eac-5ff3840ea85b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherRevenue_bbb69163-cf7d-400c-8b5b-40d370aaf62e" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherRevenue"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities_8c95e302-c3a6-4165-804e-fafc4368f667" xlink:to="loc_ifrs-full_OtherRevenue_bbb69163-cf7d-400c-8b5b-40d370aaf62e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_EmployeeBenefitsExpense_3814996b-4ee9-4b48-ac62-73c710b8d636" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_EmployeeBenefitsExpense"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities_8c95e302-c3a6-4165-804e-fafc4368f667" xlink:to="loc_ifrs-full_EmployeeBenefitsExpense_3814996b-4ee9-4b48-ac62-73c710b8d636" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DistributionCosts_ab759a7c-ba31-4d9e-8036-d665c26611c6" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DistributionCosts"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities_8c95e302-c3a6-4165-804e-fafc4368f667" xlink:to="loc_ifrs-full_DistributionCosts_ab759a7c-ba31-4d9e-8036-d665c26611c6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdministrativeExpense_1da23d70-fd0f-41d3-8d53-2825a4e92187" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdministrativeExpense"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities_8c95e302-c3a6-4165-804e-fafc4368f667" xlink:to="loc_ifrs-full_AdministrativeExpense_1da23d70-fd0f-41d3-8d53-2825a4e92187" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DepreciationAndAmortisationExpense_ab6cfd5a-9487-47b3-921d-0367f0b5f9a5" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DepreciationAndAmortisationExpense"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities_8c95e302-c3a6-4165-804e-fafc4368f667" xlink:to="loc_ifrs-full_DepreciationAndAmortisationExpense_ab6cfd5a-9487-47b3-921d-0367f0b5f9a5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ImpairmentLossRecognisedInProfitOrLossTradeReceivables_0e84df75-72cd-4110-b8f8-8bda4aa68479" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ImpairmentLossRecognisedInProfitOrLossTradeReceivables"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLossFromOperatingActivities_8c95e302-c3a6-4165-804e-fafc4368f667" xlink:to="loc_ifrs-full_ImpairmentLossRecognisedInProfitOrLossTradeReceivables_0e84df75-72cd-4110-b8f8-8bda4aa68479" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncome_86059cd8-55b7-4de2-bb6a-bc4fbf39ac51" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncome"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans_db7f851a-d91c-467e-ad97-1dcd606dbcd4" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_OtherComprehensiveIncome_86059cd8-55b7-4de2-bb6a-bc4fbf39ac51" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxGainsLossesOnRemeasurementsOfDefinedBenefitPlans_db7f851a-d91c-467e-ad97-1dcd606dbcd4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_eed0d39f-3a0a-46b9-aaa0-cfe768c9e508" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_OtherComprehensiveIncome_86059cd8-55b7-4de2-bb6a-bc4fbf39ac51" xlink:to="loc_ifrs-full_OtherComprehensiveIncomeNetOfTaxExchangeDifferencesOnTranslation_eed0d39f-3a0a-46b9-aaa0-cfe768c9e508" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://bcspeakers.com/role/Statementofcomprehensiveincomeprofitorlossbyfunctionofexpense_1" xlink:type="simple" xlink:href="bcs-2024-12-31.xsd#Statementofcomprehensiveincomeprofitorlossbyfunctionofexpense_1"/>
  <link:calculationLink xlink:role="http://bcspeakers.com/role/Statementofcomprehensiveincomeprofitorlossbyfunctionofexpense_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLoss_428402f1-24af-4ccc-839a-102425812553" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLossBeforeTax_6048682a-8b03-4046-8094-230c10dda866" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLossBeforeTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLoss_428402f1-24af-4ccc-839a-102425812553" xlink:to="loc_ifrs-full_ProfitLossBeforeTax_6048682a-8b03-4046-8094-230c10dda866" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxExpenseContinuingOperations_35e1a7e9-3351-417c-be68-7e081f34d65f" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncomeTaxExpenseContinuingOperations"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ProfitLoss_428402f1-24af-4ccc-839a-102425812553" xlink:to="loc_ifrs-full_IncomeTaxExpenseContinuingOperations_35e1a7e9-3351-417c-be68-7e081f34d65f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncome_79d93d26-015a-461a-98ee-940b84846efd" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncome"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProfitLoss_0002b4a8-fb2d-44b6-a7fd-1a71332ee934" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ComprehensiveIncome_79d93d26-015a-461a-98ee-940b84846efd" xlink:to="loc_ifrs-full_ProfitLoss_0002b4a8-fb2d-44b6-a7fd-1a71332ee934" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_OtherComprehensiveIncome_b0e2f780-d1e3-4c29-bf0d-7c44490364dc" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_OtherComprehensiveIncome"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_ComprehensiveIncome_79d93d26-015a-461a-98ee-940b84846efd" xlink:to="loc_ifrs-full_OtherComprehensiveIncome_b0e2f780-d1e3-4c29-bf0d-7c44490364dc" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://bcspeakers.com/role/Statementofcashflowsindirectmethod" xlink:type="simple" xlink:href="bcs-2024-12-31.xsd#Statementofcashflowsindirectmethod"/>
  <link:calculationLink xlink:role="http://bcspeakers.com/role/Statementofcashflowsindirectmethod" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_c2d8c159-59cb-4db4-a7dc-5e15f1bc70ca" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseInCashAndCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_56e0f2e5-942e-4c95-aae2-376ff0fb6ec2" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_c2d8c159-59cb-4db4-a7dc-5e15f1bc70ca" xlink:to="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_56e0f2e5-942e-4c95-aae2-376ff0fb6ec2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_eba8d468-3183-437e-bdb3-c0933d79d5e9" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_c2d8c159-59cb-4db4-a7dc-5e15f1bc70ca" xlink:to="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_eba8d468-3183-437e-bdb3-c0933d79d5e9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_d2081692-f160-47fd-8730-8bd50dee2ac6" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_IncreaseDecreaseInCashAndCashEquivalents_c2d8c159-59cb-4db4-a7dc-5e15f1bc70ca" xlink:to="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_d2081692-f160-47fd-8730-8bd50dee2ac6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_ffca3536-4167-4c32-888e-f3b8d951cf76" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromIssuingShares_2884b50a-5610-4f0c-8401-99271ece2cae" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProceedsFromIssuingShares"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_ffca3536-4167-4c32-888e-f3b8d951cf76" xlink:to="loc_ifrs-full_ProceedsFromIssuingShares_2884b50a-5610-4f0c-8401-99271ece2cae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares_1a06c588-dfe4-4c55-bc86-b5fdc77a8d46" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PaymentsToAcquireOrRedeemEntitysShares"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_ffca3536-4167-4c32-888e-f3b8d951cf76" xlink:to="loc_ifrs-full_PaymentsToAcquireOrRedeemEntitysShares_1a06c588-dfe4-4c55-bc86-b5fdc77a8d46" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_DividendsPaidClassifiedAsFinancingActivities_76d08c5f-cad4-41f1-993c-09293ff69849" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_DividendsPaidClassifiedAsFinancingActivities"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_ffca3536-4167-4c32-888e-f3b8d951cf76" xlink:to="loc_ifrs-full_DividendsPaidClassifiedAsFinancingActivities_76d08c5f-cad4-41f1-993c-09293ff69849" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_de27ba26-2b0c-4444-94fd-5423399afe94" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_ffca3536-4167-4c32-888e-f3b8d951cf76" xlink:to="loc_ifrs-full_ProceedsFromBorrowingsClassifiedAsFinancingActivities_de27ba26-2b0c-4444-94fd-5423399afe94" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_28e6aa74-cf10-4545-bbae-b5f10d7a4714" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_ffca3536-4167-4c32-888e-f3b8d951cf76" xlink:to="loc_ifrs-full_PaymentsOfLeaseLiabilitiesClassifiedAsFinancingActivities_28e6aa74-cf10-4545-bbae-b5f10d7a4714" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_335cf8d0-059a-4358-be04-57ffe0d4dbf4" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInFinancingActivities_ffca3536-4167-4c32-888e-f3b8d951cf76" xlink:to="loc_ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities_335cf8d0-059a-4358-be04-57ffe0d4dbf4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_0230cbfb-14c1-4640-8fa2-9b319cd70437" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperations_a622da59-fdcb-47e9-b2b4-1f0f5ecf894f" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperations"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_0230cbfb-14c1-4640-8fa2-9b319cd70437" xlink:to="loc_ifrs-full_CashFlowsFromUsedInOperations_a622da59-fdcb-47e9-b2b4-1f0f5ecf894f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestPaidClassifiedAsOperatingActivities_9ed71f3a-db7d-446c-86b1-4f89b046ec74" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InterestPaidClassifiedAsOperatingActivities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_0230cbfb-14c1-4640-8fa2-9b319cd70437" xlink:to="loc_ifrs-full_InterestPaidClassifiedAsOperatingActivities_9ed71f3a-db7d-446c-86b1-4f89b046ec74" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_InterestReceivedClassifiedAsOperatingActivities_969d3809-a8fd-48bb-8087-2f1fd4e65988" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InterestReceivedClassifiedAsOperatingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_0230cbfb-14c1-4640-8fa2-9b319cd70437" xlink:to="loc_ifrs-full_InterestReceivedClassifiedAsOperatingActivities_969d3809-a8fd-48bb-8087-2f1fd4e65988" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities_42fd2d92-7f71-4122-b769-e1ab6822ab8c" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperatingActivities_0230cbfb-14c1-4640-8fa2-9b319cd70437" xlink:to="loc_ifrs-full_IncomeTaxesPaidRefundClassifiedAsOperatingActivities_42fd2d92-7f71-4122-b769-e1ab6822ab8c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_4bd49cab-1510-4a35-9e93-6e1c8019225e" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashAndCashEquivalents_42ae16cd-f5cd-4c01-a05b-9386eda35d53" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashAndCashEquivalents"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_4bd49cab-1510-4a35-9e93-6e1c8019225e" xlink:to="loc_ifrs-full_CashAndCashEquivalents_42ae16cd-f5cd-4c01-a05b-9386eda35d53" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_BankOverdraftsClassifiedAsCashEquivalents_a1b81813-f6bc-4f89-8ba9-2d65f9adf18a" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_BankOverdraftsClassifiedAsCashEquivalents"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_4bd49cab-1510-4a35-9e93-6e1c8019225e" xlink:to="loc_ifrs-full_BankOverdraftsClassifiedAsCashEquivalents_a1b81813-f6bc-4f89-8ba9-2d65f9adf18a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInOperations_6d8be792-199e-4746-99e5-0ac7dcb5c240" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperations"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables_56305f4e-940f-45f1-b2f8-d1a7f791ae91" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_6d8be792-199e-4746-99e5-0ac7dcb5c240" xlink:to="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAndOtherReceivables_56305f4e-940f-45f1-b2f8-d1a7f791ae91" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables_0e3acba9-55a3-4f80-b285-ee38aec2a20b" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_6d8be792-199e-4746-99e5-0ac7dcb5c240" xlink:to="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAndOtherPayables_0e3acba9-55a3-4f80-b285-ee38aec2a20b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities_af981b19-96e3-4cd7-a280-8bbf320852c5" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_6d8be792-199e-4746-99e5-0ac7dcb5c240" xlink:to="loc_ifrs-full_AdjustmentsForIncreaseDecreaseInEmployeeBenefitLiabilities_af981b19-96e3-4cd7-a280-8bbf320852c5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ComprehensiveIncome_4f509f72-7089-441d-a0dd-9663bb285e13" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ComprehensiveIncome"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_6d8be792-199e-4746-99e5-0ac7dcb5c240" xlink:to="loc_ifrs-full_ComprehensiveIncome_4f509f72-7089-441d-a0dd-9663bb285e13" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_IncreaseDecreaseInDeferredTaxLiabilityAsset_1c09371a-e5e1-4fb8-86b7-450b2d2625fd" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IncreaseDecreaseInDeferredTaxLiabilityAsset"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_6d8be792-199e-4746-99e5-0ac7dcb5c240" xlink:to="loc_ifrs-full_IncreaseDecreaseInDeferredTaxLiabilityAsset_1c09371a-e5e1-4fb8-86b7-450b2d2625fd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForFinanceIncome_3afcc390-eba8-4716-9667-716b561bfcf6" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForFinanceIncome"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_6d8be792-199e-4746-99e5-0ac7dcb5c240" xlink:to="loc_ifrs-full_AdjustmentsForFinanceIncome_3afcc390-eba8-4716-9667-716b561bfcf6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense_f5639da2-0708-4d6c-99d8-3432d759b9ca" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_6d8be792-199e-4746-99e5-0ac7dcb5c240" xlink:to="loc_ifrs-full_AdjustmentsForDepreciationAndAmortisationExpense_f5639da2-0708-4d6c-99d8-3432d759b9ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForProvisions_9b8f7c26-a613-4073-afbc-46f27f88a5af" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForProvisions"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_6d8be792-199e-4746-99e5-0ac7dcb5c240" xlink:to="loc_ifrs-full_AdjustmentsForProvisions_9b8f7c26-a613-4073-afbc-46f27f88a5af" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForFinanceCosts_bbea8a0e-7f43-49e0-b39b-9ab6a680113c" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForFinanceCosts"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_6d8be792-199e-4746-99e5-0ac7dcb5c240" xlink:to="loc_ifrs-full_AdjustmentsForFinanceCosts_bbea8a0e-7f43-49e0-b39b-9ab6a680113c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets_031982eb-ee04-4adb-8e04-82a4daaf899c" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_6d8be792-199e-4746-99e5-0ac7dcb5c240" xlink:to="loc_ifrs-full_AdjustmentsForLossesGainsOnDisposalOfNoncurrentAssets_031982eb-ee04-4adb-8e04-82a4daaf899c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForIncomeTaxExpense_1e502bb8-19a6-48be-b23a-ea212e5d087e" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForIncomeTaxExpense"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_6d8be792-199e-4746-99e5-0ac7dcb5c240" xlink:to="loc_ifrs-full_AdjustmentsForIncomeTaxExpense_1e502bb8-19a6-48be-b23a-ea212e5d087e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories_5d110436-f05d-43e2-92a7-474c98d7d282" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_AdjustmentsForDecreaseIncreaseInInventories"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInOperations_6d8be792-199e-4746-99e5-0ac7dcb5c240" xlink:to="loc_ifrs-full_AdjustmentsForDecreaseIncreaseInInventories_5d110436-f05d-43e2-92a7-474c98d7d282" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_b901ca8b-267d-4326-99b3-78b2cda8dc3d" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities_921578c5-6a33-4d4e-8fcd-4400ee7c2d8d" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_b901ca8b-267d-4326-99b3-78b2cda8dc3d" xlink:to="loc_ifrs-full_CashFlowsUsedInObtainingControlOfSubsidiariesOrOtherBusinessesClassifiedAsInvestingActivities_921578c5-6a33-4d4e-8fcd-4400ee7c2d8d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_4cc12d42-0a1d-4132-a914-18da8096ede7" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_b901ca8b-267d-4326-99b3-78b2cda8dc3d" xlink:to="loc_ifrs-full_PurchaseOfPropertyPlantAndEquipmentClassifiedAsInvestingActivities_4cc12d42-0a1d-4132-a914-18da8096ede7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities_642170b7-aad4-4b84-876d-63103a742e30" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_b901ca8b-267d-4326-99b3-78b2cda8dc3d" xlink:to="loc_ifrs-full_PurchaseOfIntangibleAssetsClassifiedAsInvestingActivities_642170b7-aad4-4b84-876d-63103a742e30" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod_2a65cb4a-fc76-4bd2-b1a7-1f79c61a48c7" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_b901ca8b-267d-4326-99b3-78b2cda8dc3d" xlink:to="loc_ifrs-full_ProceedsFromSalesOfInvestmentsAccountedForUsingEquityMethod_2a65cb4a-fc76-4bd2-b1a7-1f79c61a48c7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_bcs_ProceedsFromSalesOfPurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod_c6a2f62f-77fb-4306-9ed4-8f3f72328788" xlink:href="bcs-2024-12-31.xsd#bcs_ProceedsFromSalesOfPurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_b901ca8b-267d-4326-99b3-78b2cda8dc3d" xlink:to="loc_bcs_ProceedsFromSalesOfPurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod_c6a2f62f-77fb-4306-9ed4-8f3f72328788" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_PurchaseOfAvailableforsaleFinancialAssets_b11285b5-00a9-4454-9092-f1d772f4aa78" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_PurchaseOfAvailableforsaleFinancialAssets"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_b901ca8b-267d-4326-99b3-78b2cda8dc3d" xlink:to="loc_ifrs-full_PurchaseOfAvailableforsaleFinancialAssets_b11285b5-00a9-4454-9092-f1d772f4aa78" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_ifrs-full_ProceedsFromDisposalOrMaturityOfAvailableforsaleFinancialAssets_de571f87-f6cc-4cfb-9b60-af9754f7f132" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_ProceedsFromDisposalOrMaturityOfAvailableforsaleFinancialAssets"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_ifrs-full_CashFlowsFromUsedInInvestingActivities_b901ca8b-267d-4326-99b3-78b2cda8dc3d" xlink:to="loc_ifrs-full_ProceedsFromDisposalOrMaturityOfAvailableforsaleFinancialAssets_de571f87-f6cc-4cfb-9b60-af9754f7f132" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
