v3.26.1
Fair value of financial instruments - Comparison of carrying amounts and fair values for assets and liabilities not held at fair value (Details) - GBP (£)
£ in Millions
Jun. 30, 2026
Dec. 31, 2025
Dec. 31, 2024
Financial assets      
Debt securities at amortised cost £ 73,519 £ 68,475  
Reverse repurchase agreements and other similar secured lending 12,100 17,622  
Assets included in a disposal group classified as held for sale 0 5,932  
Financial liabilities      
Repurchase agreements and other similar secured borrowing (30,704) (25,170)  
Debt securities in issue (126,837) (119,033)  
Subordinated liabilities (11,098) (12,954) £ (11,921)
Fair value      
Financial assets      
Debt securities at amortised cost 72,595 67,442  
Loans and advances at amortised cost 368,550 361,517  
Reverse repurchase agreements and other similar secured lending 12,100 17,622  
Assets included in a disposal group classified as held for sale 0 6,065  
Financial liabilities      
Deposits at amortised cost (594,358) (585,689)  
Repurchase agreements and other similar secured borrowing (30,704) (25,170)  
Debt securities in issue (129,065) (121,439)  
Subordinated liabilities (11,571) (13,483)  
Carrying amount      
Financial assets      
Debt securities at amortised cost 73,519 68,475  
Loans and advances at amortised cost 371,301 361,523  
Reverse repurchase agreements and other similar secured lending 12,100 17,622  
Assets included in a disposal group classified as held for sale 0 5,801  
Financial liabilities      
Deposits at amortised cost (594,357) (585,613)  
Repurchase agreements and other similar secured borrowing (30,704) (25,170)  
Debt securities in issue (126,837) (119,033)  
Subordinated liabilities £ (11,098) £ (12,954)