v3.25.4
Structured entities - Nature of interest (Details) - GBP (£)
£ in Millions
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of unconsolidated structured entities [line items]      
Financial assets at fair value through the income statement £ 185,002 £ 191,845  
Financial assets at fair value through other comprehensive income 42,818 51,010  
Loans and advances at amortised cost 150,786 144,827  
Debt instruments held at amortised cost 55,153 50,227  
Other assets 3,650 3,250  
Total assets 1,245,473 1,218,524 £ 1,185,200
Total      
Disclosure of unconsolidated structured entities [line items]      
Financial assets at fair value through the income statement 629 1,268  
Financial assets at fair value through other comprehensive income 3,655 4,852  
Loans and advances at amortised cost 46,705 46,554  
Debt instruments held at amortised cost 14,069 15,438  
Other assets 0 0  
Total assets 65,058 68,112  
Total off-balance sheet notional amounts 36,192 37,263  
Maximum exposure to loss 101,250 105,375  
Total assets of the entity 292,297 292,800  
Total | Barclays Bank Group owned, not consolidated entities      
Disclosure of unconsolidated structured entities [line items]      
Financial assets at fair value through the income statement 0 0  
Financial assets at fair value through other comprehensive income 0 0  
Loans and advances at amortised cost 0 0  
Debt instruments held at amortised cost 0 0  
Other assets 0 0  
Total assets 0 0  
Total off-balance sheet notional amounts 0 0  
Maximum exposure to loss 0 0  
Total assets of the entity 0 0  
Multi-seller conduit programme      
Disclosure of unconsolidated structured entities [line items]      
Financial assets at fair value through the income statement 0 0  
Financial assets at fair value through other comprehensive income 0 0  
Loans and advances at amortised cost 9,697 11,103  
Debt instruments held at amortised cost 0 0  
Other assets 0 0  
Total assets 9,697 11,103  
Total off-balance sheet notional amounts 11,326 11,530  
Maximum exposure to loss 21,023 22,633  
Total assets of the entity 32,527 41,431  
Lending      
Disclosure of unconsolidated structured entities [line items]      
Financial assets at fair value through the income statement 0 0  
Financial assets at fair value through other comprehensive income 2,367 3,206  
Loans and advances at amortised cost 37,008 35,451  
Debt instruments held at amortised cost 0 0  
Other assets 0 0  
Total assets 39,375 38,657  
Total off-balance sheet notional amounts 24,866 25,733  
Maximum exposure to loss 64,241 64,390  
Total assets of the entity 193,873 199,000  
Other      
Disclosure of unconsolidated structured entities [line items]      
Financial assets at fair value through the income statement 629 1,268  
Financial assets at fair value through other comprehensive income 1,288 1,646  
Loans and advances at amortised cost 0 0  
Debt instruments held at amortised cost 14,069 15,438  
Other assets 0 0  
Total assets 15,986 18,352  
Total off-balance sheet notional amounts 0 0  
Maximum exposure to loss 15,986 18,352  
Total assets of the entity £ 65,897 £ 52,369