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Accounting policies (Details) £ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 GBP (£) item
Intangible assets and goodwill |
Impairment loss | £ | £ 0
Credit cards |
Loan impairment provisions |
Write off period | 4 years
Number of arrear cycles after which the financial asset is written off | item | 12
Minimum | Computer software |
Intangible assets and goodwill |
Estimated useful economic lives | 3 years
Minimum | Other acquired intangibles |
Intangible assets and goodwill |
Estimated useful economic lives | 3 years
Maximum | Retail mortgages |
Loan impairment provisions |
Write off period | 5 years
Maximum | Overdrafts and other unsecured loans |
Loan impairment provisions |
Write off period | 6 years
Maximum | Commercial loans |
Loan impairment provisions |
Write off period | 5 years
Maximum | Computer software |
Intangible assets and goodwill |
Estimated useful economic lives | 10 years
Maximum | Other acquired intangibles |
Intangible assets and goodwill |
Estimated useful economic lives | 5 years

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- Definition The amount of impairment loss recognised in profit or loss. [Refer: Impairment loss; Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 126 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_126_a&doctype=Standard -URIDate 2023-03-23 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 36 -IssueDate 2023-01-01 -Paragraph 129 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=36&code=ifrs-tx-2023-en-r&anchor=para_129_a&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The useful life, measured as period of time, used for intangible assets other than goodwill. [Refer: Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2023-01-01 -Paragraph 118 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=38&code=ifrs-tx-2023-en-r&anchor=para_118_a&doctype=Standard -URIDate 2023-03-23 + Details
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