v3.25.4
Risk Management - Disclosure of contractual maturity of financial liabilities - undiscounted (Details) - GBP (£)
£ in Millions
Dec. 31, 2025
Dec. 31, 2024
Disclosure of financial liabilities [line items]    
Deposits at amortised cost from banks and customers, undiscounted £ 346,220 £ 320,913
Cash collateral and settlement balances, undiscounted 117,281 104,801
Repurchase agreements and other similar secured borrowing, undiscounted 18,842 29,923
Debt securities in issue, undiscounted 61,471 39,806
Subordinated liabilities, undiscounted 58,364 54,892
Trading portfolio liabilities, undiscounted 56,829 56,182
Financial liabilities designated at fair value, undiscounted 310,679 299,022
Derivative financial instruments, undiscounted 240,984 279,604
Liabilities included in disposal groups classified as held for sale, undiscounted 0 3,726
Other financial liabilities, undiscounted 8,098 8,291
Total financial liabilities, undiscounted cash flows 1,218,768 1,197,160
Not more than one month    
Disclosure of financial liabilities [line items]    
Deposits at amortised cost from banks and customers, undiscounted 255,034 240,695
Cash collateral and settlement balances, undiscounted 84,076 75,021
Repurchase agreements and other similar secured borrowing, undiscounted 8,801 18,542
Debt securities in issue, undiscounted 2,393 2,920
Subordinated liabilities, undiscounted 1,358 0
Trading portfolio liabilities, undiscounted 56,829 56,182
Financial liabilities designated at fair value, undiscounted 161,975 157,090
Derivative financial instruments, undiscounted 240,179 278,662
Liabilities included in disposal groups classified as held for sale, undiscounted 0 0
Other financial liabilities, undiscounted 4,284 4,335
Total financial liabilities, undiscounted cash flows 814,929 833,447
Over one month but not more than three months    
Disclosure of financial liabilities [line items]    
Deposits at amortised cost from banks and customers, undiscounted 35,765 33,769
Cash collateral and settlement balances, undiscounted 32,910 29,780
Repurchase agreements and other similar secured borrowing, undiscounted 4,520 1,832
Debt securities in issue, undiscounted 10,789 15,360
Subordinated liabilities, undiscounted 0 824
Trading portfolio liabilities, undiscounted 0 0
Financial liabilities designated at fair value, undiscounted 30,387 23,676
Derivative financial instruments, undiscounted 23 27
Liabilities included in disposal groups classified as held for sale, undiscounted 0 3,726
Other financial liabilities, undiscounted 8 10
Total financial liabilities, undiscounted cash flows 114,402 109,004
Over three months but not more than six months    
Disclosure of financial liabilities [line items]    
Deposits at amortised cost from banks and customers, undiscounted 31,757 27,410
Cash collateral and settlement balances, undiscounted 0 0
Repurchase agreements and other similar secured borrowing, undiscounted 322 84
Debt securities in issue, undiscounted 22,489 5,930
Subordinated liabilities, undiscounted 1,025 75
Trading portfolio liabilities, undiscounted 0 0
Financial liabilities designated at fair value, undiscounted 16,677 16,971
Derivative financial instruments, undiscounted 54 18
Liabilities included in disposal groups classified as held for sale, undiscounted 0 0
Other financial liabilities, undiscounted 16 18
Total financial liabilities, undiscounted cash flows 72,340 50,506
Over six months but not more than one year    
Disclosure of financial liabilities [line items]    
Deposits at amortised cost from banks and customers, undiscounted 19,049 13,059
Cash collateral and settlement balances, undiscounted 0 0
Repurchase agreements and other similar secured borrowing, undiscounted 637 4,065
Debt securities in issue, undiscounted 13,366 3,579
Subordinated liabilities, undiscounted 418 80
Trading portfolio liabilities, undiscounted 0 0
Financial liabilities designated at fair value, undiscounted 14,449 15,713
Derivative financial instruments, undiscounted 13 0
Liabilities included in disposal groups classified as held for sale, undiscounted 0 0
Other financial liabilities, undiscounted 35 35
Total financial liabilities, undiscounted cash flows 47,967 36,531
Over one year but not more than three years    
Disclosure of financial liabilities [line items]    
Deposits at amortised cost from banks and customers, undiscounted 3,422 3,687
Cash collateral and settlement balances, undiscounted 0 0
Repurchase agreements and other similar secured borrowing, undiscounted 4,562 3,892
Debt securities in issue, undiscounted 2,243 745
Subordinated liabilities, undiscounted 12,727 11,955
Trading portfolio liabilities, undiscounted 0 0
Financial liabilities designated at fair value, undiscounted 32,838 30,014
Derivative financial instruments, undiscounted 223 197
Liabilities included in disposal groups classified as held for sale, undiscounted 0 0
Other financial liabilities, undiscounted 134 127
Total financial liabilities, undiscounted cash flows 56,149 50,617
Over three years but not more than five years    
Disclosure of financial liabilities [line items]    
Deposits at amortised cost from banks and customers, undiscounted 614 1,531
Cash collateral and settlement balances, undiscounted 0 0
Repurchase agreements and other similar secured borrowing, undiscounted 0 1,508
Debt securities in issue, undiscounted 2,573 2,558
Subordinated liabilities, undiscounted 9,210 7,036
Trading portfolio liabilities, undiscounted 0 0
Financial liabilities designated at fair value, undiscounted 21,670 21,471
Derivative financial instruments, undiscounted 94 298
Liabilities included in disposal groups classified as held for sale, undiscounted 0 0
Other financial liabilities, undiscounted 108 86
Total financial liabilities, undiscounted cash flows 34,269 34,488
Over five years    
Disclosure of financial liabilities [line items]    
Deposits at amortised cost from banks and customers, undiscounted 579 762
Cash collateral and settlement balances, undiscounted 295 0
Repurchase agreements and other similar secured borrowing, undiscounted 0 0
Debt securities in issue, undiscounted 7,618 8,714
Subordinated liabilities, undiscounted 33,626 34,922
Trading portfolio liabilities, undiscounted 0 0
Financial liabilities designated at fair value, undiscounted 32,683 34,087
Derivative financial instruments, undiscounted 398 402
Liabilities included in disposal groups classified as held for sale, undiscounted 0 0
Other financial liabilities, undiscounted 3,513 3,680
Total financial liabilities, undiscounted cash flows £ 78,712 £ 82,567