v3.25.4

Debt securities in issue - Schedule of Debt Securities in Issue (Details) - GBP (£) £ in Millions | Dec. 31, 2025 | Dec. 31, 2024
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DEBT SECURITIES IN ISSUE (Details) - Schedule of Debt Securities in Issue [Line Items] |  |
Debt instruments issued at fair value through profit or loss, designated upon initial recognition or subsequently | £ 4,243 | £ 4,630
Debt securities in issue at amortised cost | 78,271 | 70,834
Total debt securities in issue | 82,514 | 75,464
Senior unsecured notes issued |  |
DEBT SECURITIES IN ISSUE (Details) - Schedule of Debt Securities in Issue [Line Items] |  |
Debt instruments issued at fair value through profit or loss, designated upon initial recognition or subsequently | 4,226 | 4,608
Debt securities in issue at amortised cost | 37,532 | 40,019
Total debt securities in issue | 41,758 | 44,627
Covered bonds |  |
DEBT SECURITIES IN ISSUE (Details) - Schedule of Debt Securities in Issue [Line Items] |  |
Debt instruments issued at fair value through profit or loss, designated upon initial recognition or subsequently | 0 | 0
Debt securities in issue at amortised cost | 11,260 | 11,764
Total debt securities in issue | 11,260 | 11,764
Certificates of deposit issued |  |
DEBT SECURITIES IN ISSUE (Details) - Schedule of Debt Securities in Issue [Line Items] |  |
Debt instruments issued at fair value through profit or loss, designated upon initial recognition or subsequently | 0 | 0
Debt securities in issue at amortised cost | 7,333 | 5,776
Total debt securities in issue | 7,333 | 5,776
Securitisation notes |  |
DEBT SECURITIES IN ISSUE (Details) - Schedule of Debt Securities in Issue [Line Items] |  |
Debt instruments issued at fair value through profit or loss, designated upon initial recognition or subsequently | 17 | 22
Debt securities in issue at amortised cost | 6,325 | 5,185
Total debt securities in issue | 6,342 | 5,207
Commercial paper |  |
DEBT SECURITIES IN ISSUE (Details) - Schedule of Debt Securities in Issue [Line Items] |  |
Debt instruments issued at fair value through profit or loss, designated upon initial recognition or subsequently | 0 | 0
Debt securities in issue at amortised cost | 15,821 | 8,090
Total debt securities in issue | £ 15,821 | £ 8,090

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- Definition The amount of instruments issued by the entity that represent indebtedness at amortised cost. [Refer: Financial liabilities at amortised cost] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard -URIDate 2025-03-27 + Details
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- Definition The amount of instruments issued by the entity that represent indebtedness at fair value through profit or loss that were designated as such upon initial recognition or subsequently. [Refer: Financial liabilities at fair value through profit or loss, designated upon initial recognition or subsequently] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard -URIDate 2025-03-27 + Details
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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 -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard -URIDate 2025-03-27 + Details
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