v3.26.1
Provisions (Details) - GBP (£)
£ in Millions
Jun. 30, 2026
Dec. 31, 2025
Disclosure of other provisions [line items]    
Provisions £ 723 £ 766
Customer redress    
Disclosure of other provisions [line items]    
Provisions 9 16
Legal, competition and regulatory matters    
Disclosure of other provisions [line items]    
Provisions 44 79
Redundancy and restructuring    
Disclosure of other provisions [line items]    
Provisions 51 64
Undrawn contractually committed facilities and guarantees    
Disclosure of other provisions [line items]    
Provisions 410 398
Sundry provisions    
Disclosure of other provisions [line items]    
Provisions 196 193
Onerous contracts    
Disclosure of other provisions [line items]    
Provisions £ 13 £ 16