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Asset transfers (Details) - Securities repurchase agreements or lending transactions - GBP (£) £ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Securities repurchase agreements or lending transactions |  |
Fair value of transferred financial asset not derecognised | £ 9,983 | £ 26,705
Fair value of associated liabilities | 9,501 | 24,747
Trading assets |  |
Securities repurchase agreements or lending transactions |  |
Fair value of transferred financial asset not derecognised | 6,668 | 13,084
Loans to banks - amortised cost |  |
Securities repurchase agreements or lending transactions |  |
Fair value of transferred financial asset not derecognised | 16 | 38
Loans to customers - amortised cost |  |
Securities repurchase agreements or lending transactions |  |
Fair value of transferred financial asset not derecognised | 398 | 1,837
Other financial assets |  |
Securities repurchase agreements or lending transactions |  |
Fair value of transferred financial asset not derecognised | £ 2,901 | £ 11,746

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- Definition The fair value of financial liabilities associated with transferred financial assets that are not derecognised in their entirety. [Refer: Financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 42D -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_42D_d&doctype=Standard -URIDate 2022-03-24 + Details
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