v3.26.1
Debt securities in issue - Schedule of Debt Securities in Issue (Details) - GBP (£)
£ in Millions
Jun. 30, 2026
Dec. 31, 2025
Disclosure of financial liabilities [line items]    
Senior unsecured notes issued £ 44,478 £ 41,758
Covered bonds 12,700 11,260
Certificates of deposit issued 10,040 7,333
Securitisation notes 7,053 6,342
Commercial paper 20,820 15,821
Total debt securities in issue 95,091 82,514
Financial liabilities at fair value through profit or loss    
Disclosure of financial liabilities [line items]    
Senior unsecured notes issued 4,221 4,226
Covered bonds 0 0
Certificates of deposit issued 0 0
Securitisation notes 17 17
Commercial paper 0 0
Total debt securities in issue 4,238 4,243
Financial liabilities at amortised cost    
Disclosure of financial liabilities [line items]    
Senior unsecured notes issued 40,257 37,532
Covered bonds 12,700 11,260
Certificates of deposit issued 10,040 7,333
Securitisation notes 7,036 6,325
Commercial paper 20,820 15,821
Total debt securities in issue £ 90,853 £ 78,271