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

The amount of instruments issued by the entity that represent indebtedness.

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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

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- Definition

The amount of loans and advances the entity has made to customers.

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The amount of borrowings that the entity does not separately disclose in the same statement or note. [Refer: Borrowings]

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Reduction in expected credit losses from financial guarantee contracts with consolidated structured entities

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