v3.25.4
Derivative financial instruments - Disclosure of hedged items in fair value hedges (Details) - Fair value hedges - GBP (£)
£ in Millions
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Assets    
Carrying amount, hedged assets £ 49,624 £ 49,543
Accumulated fair value hedge adjustment included in carrying amount (2,712) (2,585)
Accumulated fair value adjustment on items no longer in a hedge relationship (369) (372)
Liabilities    
Carrying amount, hedged liabilities (52,860) (47,544)
Accumulated fair value hedge adjustment included in carrying amount 1,563 2,253
Accumulated fair value adjustment on items no longer in a hedge relationship 974 1,157
Total hedged items (3,236) 1,999
Accumulated fair value hedge adjustment included in carrying amount, total (1,149) (332)
Accumulated fair value adjustment on items no longer in a hedge relationship, total 605 785
Change in fair value used as a basis to determine ineffectiveness (593) (399)
Hedge ineffectiveness recognised in the income statement 143 194
Hedged assets    
Liabilities    
Change in fair value used as a basis to determine ineffectiveness (82) (775)
Hedge ineffectiveness recognised in the income statement 161 202
Hedged liabilities    
Liabilities    
Change in fair value used as a basis to determine ineffectiveness (511) 376
Hedge ineffectiveness recognised in the income statement (18) (8)
Interest rate risk | Hedged assets | Debt securities at amortised cost    
Assets    
Carrying amount, hedged assets 11,388 7,673
Accumulated fair value hedge adjustment included in carrying amount 27 (44)
Accumulated fair value adjustment on items no longer in a hedge relationship (1) 8
Liabilities    
Change in fair value used as a basis to determine ineffectiveness 100 50
Hedge ineffectiveness recognised in the income statement 32 66
Interest rate risk | Hedged assets | Financial assets at fair value through other comprehensive income    
Assets    
Carrying amount, hedged assets 27,807 29,514
Accumulated fair value hedge adjustment included in carrying amount (1,378) (1,162)
Accumulated fair value adjustment on items no longer in a hedge relationship (429) (452)
Liabilities    
Change in fair value used as a basis to determine ineffectiveness (163) (132)
Hedge ineffectiveness recognised in the income statement 127 176
Interest rate risk | Loans and advances | Financial assets at amortised cost    
Assets    
Carrying amount, hedged assets 698 711
Accumulated fair value hedge adjustment included in carrying amount (155) (160)
Accumulated fair value adjustment on items no longer in a hedge relationship 1 (1)
Liabilities    
Change in fair value used as a basis to determine ineffectiveness 4 (18)
Hedge ineffectiveness recognised in the income statement (1) 4
Interest rate risk | Debt securities at amortised cost    
Liabilities    
Carrying amount, hedged liabilities (1,333) (1,417)
Accumulated fair value hedge adjustment included in carrying amount 1 8
Accumulated fair value adjustment on items no longer in a hedge relationship (31) (24)
Change in fair value used as a basis to determine ineffectiveness 5 (18)
Hedge ineffectiveness recognised in the income statement 1 2
Interest rate risk | Subordinated liabilities    
Liabilities    
Carrying amount, hedged liabilities (38,611) (37,531)
Accumulated fair value hedge adjustment included in carrying amount 1,576 2,257
Accumulated fair value adjustment on items no longer in a hedge relationship 1,006 1,182
Change in fair value used as a basis to determine ineffectiveness (514) 398
Hedge ineffectiveness recognised in the income statement (22) (8)
Interest rate risk | Deposits at amortised cost from banks and customers    
Liabilities    
Carrying amount, hedged liabilities (12,916) (8,596)
Accumulated fair value hedge adjustment included in carrying amount (14) (12)
Accumulated fair value adjustment on items no longer in a hedge relationship (1) (1)
Change in fair value used as a basis to determine ineffectiveness (2) (4)
Hedge ineffectiveness recognised in the income statement 3 (2)
Inflation risk | Hedged assets | Debt securities at amortised cost    
Assets    
Carrying amount, hedged assets 8,127 8,348
Accumulated fair value hedge adjustment included in carrying amount (1,332) (1,342)
Accumulated fair value adjustment on items no longer in a hedge relationship 1 2
Liabilities    
Change in fair value used as a basis to determine ineffectiveness (9) (598)
Hedge ineffectiveness recognised in the income statement 16 (29)
Inflation risk | Hedged assets | Financial assets at fair value through other comprehensive income    
Assets    
Carrying amount, hedged assets 1,324 2,979
Accumulated fair value hedge adjustment included in carrying amount (62) (96)
Accumulated fair value adjustment on items no longer in a hedge relationship (20) (31)
Liabilities    
Change in fair value used as a basis to determine ineffectiveness (5) (59)
Hedge ineffectiveness recognised in the income statement (13) (22)
Inflation risk | Loans and advances | Financial assets at amortised cost    
Assets    
Carrying amount, hedged assets 280 318
Accumulated fair value hedge adjustment included in carrying amount 188 219
Accumulated fair value adjustment on items no longer in a hedge relationship 79 102
Liabilities    
Change in fair value used as a basis to determine ineffectiveness (9) (18)
Hedge ineffectiveness recognised in the income statement £ 0 £ 7