v3.25.2
Provisions - Rollforward of provisions (Details)
£ in Millions
 6 Months Ended
Jun. 30, 2025
GBP (£)
Reconciliation of changes in other provisions [abstract]  
Other provisions, beginning balance £ 275 [1]
Other provisions, ending balance 375 [1]
Provisions (excluding contractual commitments)  
Reconciliation of changes in other provisions [abstract]  
Other provisions, beginning balance 191
Additions 194
Amounts utilised (67)
Unused amounts reversed (19)
Exchange and other movements 2
Other provisions, ending balance 301
Restructuring costs  
Reconciliation of changes in other provisions [abstract]  
Other provisions, beginning balance 27
Additions 181
Amounts utilised (18)
Unused amounts reversed (3)
Exchange and other movements 2
Other provisions, ending balance 189
Legal proceedings and regulatory matters  
Reconciliation of changes in other provisions [abstract]  
Other provisions, beginning balance 50
Additions 6
Amounts utilised (35)
Unused amounts reversed (8)
Exchange and other movements 8
Other provisions, ending balance 21
Customer remediation  
Reconciliation of changes in other provisions [abstract]  
Other provisions, beginning balance 7
Additions 1
Amounts utilised 0
Unused amounts reversed (4)
Exchange and other movements 0
Other provisions, ending balance 4
Other provisions  
Reconciliation of changes in other provisions [abstract]  
Other provisions, beginning balance 107
Additions 6
Amounts utilised (14)
Unused amounts reversed (4)
Exchange and other movements (8)
Other provisions, ending balance 87
Contractual commitments  
Reconciliation of changes in other provisions [abstract]  
Other provisions, beginning balance 84
Net change in expected credit loss provisions (10)
Other provisions, ending balance £ 74
[1] Refer to Note 8 ‘Provisions’ on page 45.