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Structured entities - Own asset securitisations (Details) - GBP (£) £ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Structured entities |  |
Loans and advances to customers | £ 381,433 | £ 366,340
Assets pledged against liabilities | 39,156 | 35,972
Structured entities relating to other credit risk transfer securitisation |  |
Structured entities |  |
Loans and advances to customers | 2,687 | 4,361
Reduction in expected credit losses from financial guarantee contracts with consolidated structured entities | 11 | 20
Structured entities relating to other credit risk transfer securitisation | Third parties |  |
Structured entities |  |
Debt securities in issue | 863 | 859
Structured entities relating to covered debt programme |  |
Structured entities |  |
Other borrowings | 3,619 | 4,132
Structured entities relating to covered debt programme | Loans to customers |  |
Structured entities |  |
Assets pledged against liabilities | 11,067 | 8,156
Structured entities relating to lending of own issued securities | Debt securities | Lending of own issued securities |  |
Structured entities |  |
Assets pledged against liabilities | 2,414 | 2,244
Structured entities relating to lending of own issued securities | Secured | Lending of own issued securities |  |
Structured entities |  |
Debt securities in issue | £ 2,312 | £ 2,419

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- Definition The amount of instruments issued by the entity that represent indebtedness. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of financial assets that the entity has pledged as collateral for liabilities or contingent liabilities, including amounts that have been reclassified in accordance with paragraph 3.2.23(a) of IFRS 9. [Refer: Contingent liabilities [member]; Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2023-01-01 -Paragraph 14 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_14_a&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of loans and advances the entity has made to customers. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The amount of borrowings that the entity does not separately disclose in the same statement or note. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 112 -Subparagraph c -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_112_c&doctype=Standard -URIDate 2023-03-23 + Details
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