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Memorandum items - Contingent liabilities and commitments (Details) - GBP (£) £ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Contingent liabilities and commitments
Standby facilities, credit lines and other commitments	£ 115,441	£ 121,576
Total	119,631	126,581	£ 125,367
Guarantees
Contingent liabilities and commitments
Estimated net exposure	2,810	3,150
Other contingent liabilities
Contingent liabilities and commitments
Estimated net exposure	£ 1,380	£ 1,855

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The amount of the estimated financial effect of contingent liabilities. [Refer: Contingent liabilities [member]]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-IssueDate 2023-01-01
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The amount of standby facilities, credit lines and other commitments.

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