v3.25.4

Liquidity risk - Schedule of Maturities of Liabilities (Details) - GBP (£) £ in Millions | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
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FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Deposits from banks | £ 5,779 | £ 6,158 |
Customer deposits | 496,457 | 482,745 |
Repurchase agreements at amortised cost | 38,570 | 37,760 |
Financial liabilities at fair value through profit or loss | 27,909 | 27,611 |
Debt securities in issue at amortised cost | 78,271 | 70,834 |
Liabilities arising from non-participating investment contracts | 61,640 | 51,228 |
Lease liabilities | 1,026 | 1,261 |
Subordinated liabilities | 9,894 | 10,089 | £ 10,253
Derivative financial instruments | 16,132 | 21,676 |
Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Deposits from banks | 5,812 | 6,266 |
Customer deposits | 498,131 | 483,760 |
Repurchase agreements at amortised cost | 39,502 | 38,859 |
Financial liabilities at fair value through profit or loss | 29,856 | 30,156 |
Notes in circulation | 2,118 | 2,121 |
Debt securities in issue at amortised cost | 86,655 | 75,187 |
Liabilities arising from non-participating investment contracts | 61,640 | 51,228 |
Lease liabilities | 1,132 | 1,369 |
Subordinated liabilities | 16,759 | 13,312 |
Total non-derivative financial liabilities | 741,605 | 702,258 |
Derivative financial instruments | 17,884 | 25,420 |
Net settled derivative liabilities | 10,430 | 12,594 |
Gross settled derivatives – outflows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 261,262 | 262,319 |
Gross settled derivatives – inflows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 253,808 | 249,493 |
Gross settled derivatives – net flows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 7,454 | 12,826 |
Up to 1 month £m | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Deposits from banks | 1,872 | 1,809 |
Customer deposits | 428,915 | 437,693 |
Repurchase agreements at amortised cost | 11,966 | 8,974 |
Financial liabilities at fair value through profit or loss | 13,140 | 15,208 |
Notes in circulation | 2,118 | 2,121 |
Debt securities in issue at amortised cost | 408 | 3,704 |
Liabilities arising from non-participating investment contracts | 61,640 | 51,228 |
Lease liabilities | 35 | 28 |
Subordinated liabilities | 24 | 26 |
Total non-derivative financial liabilities | 520,118 | 520,791 |
Derivative financial instruments | 9,620 | 13,211 |
Net settled derivative liabilities | 8,258 | 10,432 |
Up to 1 month £m | Gross settled derivatives – outflows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 89,450 | 100,432 |
Up to 1 month £m | Gross settled derivatives – inflows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 88,088 | 97,653 |
Up to 1 month £m | Gross settled derivatives – net flows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 1,362 | 2,779 |
1 to 3 months £m | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Deposits from banks | 421 | 673 |
Customer deposits | 23,351 | 14,873 |
Repurchase agreements at amortised cost | 9,750 | 5,169 |
Financial liabilities at fair value through profit or loss | 6,062 | 3,965 |
Notes in circulation | 0 | 0 |
Debt securities in issue at amortised cost | 9,959 | 10,367 |
Liabilities arising from non-participating investment contracts | 0 | 0 |
Lease liabilities | 59 | 65 |
Subordinated liabilities | 1,170 | 698 |
Total non-derivative financial liabilities | 50,772 | 35,810 |
Derivative financial instruments | 1,487 | 2,210 |
Net settled derivative liabilities | 35 | 92 |
1 to 3 months £m | Gross settled derivatives – outflows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 66,862 | 61,356 |
1 to 3 months £m | Gross settled derivatives – inflows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 65,410 | 59,238 |
1 to 3 months £m | Gross settled derivatives – net flows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 1,452 | 2,118 |
3 to 12 months £m | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Deposits from banks | 1,930 | 904 |
Customer deposits | 35,640 | 24,811 |
Repurchase agreements at amortised cost | 7,866 | 15,300 |
Financial liabilities at fair value through profit or loss | 2,953 | 1,803 |
Notes in circulation | 0 | 0 |
Debt securities in issue at amortised cost | 22,797 | 13,624 |
Liabilities arising from non-participating investment contracts | 0 | 0 |
Lease liabilities | 200 | 241 |
Subordinated liabilities | 990 | 1,676 |
Total non-derivative financial liabilities | 72,376 | 58,359 |
Derivative financial instruments | 933 | 2,021 |
Net settled derivative liabilities | 62 | 109 |
3 to 12 months £m | Gross settled derivatives – outflows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 43,379 | 43,231 |
3 to 12 months £m | Gross settled derivatives – inflows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 42,508 | 41,319 |
3 to 12 months £m | Gross settled derivatives – net flows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 871 | 1,912 |
1 to 5 years £m | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Deposits from banks | 1,579 | 2,775 |
Customer deposits | 9,722 | 6,127 |
Repurchase agreements at amortised cost | 6,773 | 9,416 |
Financial liabilities at fair value through profit or loss | 2,044 | 2,102 |
Notes in circulation | 0 | 0 |
Debt securities in issue at amortised cost | 40,064 | 38,973 |
Liabilities arising from non-participating investment contracts | 0 | 0 |
Lease liabilities | 446 | 574 |
Subordinated liabilities | 6,247 | 4,207 |
Total non-derivative financial liabilities | 66,875 | 64,174 |
Derivative financial instruments | 1,653 | 2,866 |
Net settled derivative liabilities | 291 | 404 |
1 to 5 years £m | Gross settled derivatives – outflows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 40,311 | 34,795 |
1 to 5 years £m | Gross settled derivatives – inflows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 38,949 | 32,333 |
1 to 5 years £m | Gross settled derivatives – net flows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 1,362 | 2,462 |
Over 5 years £m | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Deposits from banks | 10 | 105 |
Customer deposits | 503 | 256 |
Repurchase agreements at amortised cost | 3,147 | 0 |
Financial liabilities at fair value through profit or loss | 5,657 | 7,078 |
Notes in circulation | 0 | 0 |
Debt securities in issue at amortised cost | 13,427 | 8,519 |
Liabilities arising from non-participating investment contracts | 0 | 0 |
Lease liabilities | 392 | 461 |
Subordinated liabilities | 8,328 | 6,705 |
Total non-derivative financial liabilities | 31,464 | 23,124 |
Derivative financial instruments | 4,191 | 5,112 |
Net settled derivative liabilities | 1,784 | 1,557 |
Over 5 years £m | Gross settled derivatives – outflows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 21,260 | 22,505 |
Over 5 years £m | Gross settled derivatives – inflows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | 18,853 | 18,950 |
Over 5 years £m | Gross settled derivatives – net flows | Undiscounted future cash flow basis |  |  |
FINANCIAL RISK MANAGEMENT (Details) - Schedule of Maturities of Liabilities [Line Items] |  |  |
Derivative financial instruments | £ 2,407 | £ 3,555 |

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