v3.26.1
Segmental analysis (Details) - GBP (£)
£ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Schedule Of Operating Segments [Line Items]      
Net interest income £ 7,125 £ 6,546  
Other income 2,720 2,289  
Total income 9,845 8,835  
Operating expenses (5,677) (5,635)  
Impairment charge (612) (442)  
Profit before tax 3,556 2,758  
Segment income 9,845 8,835  
External assets 656,379   £ 631,335
External liabilities 613,481   589,355
Retail £m      
Schedule Of Operating Segments [Line Items]      
Net interest income 5,138 4,710  
Other income 1,408 1,251  
Total income 6,546 5,961  
Operating expenses (3,762) (3,715)  
Impairment charge (565) (342)  
Profit before tax 2,219 1,904  
Segment income 6,546 5,961  
Commercial Banking      
Schedule Of Operating Segments [Line Items]      
Net interest income 1,838 1,623  
Other income 530 544  
Total income 2,368 2,167  
Operating expenses (1,139) (1,156)  
Impairment charge (47) (99)  
Profit before tax 1,182 912  
Segment income 2,368 2,167  
Other £m      
Schedule Of Operating Segments [Line Items]      
Net interest income 149 213  
Other income 782 494  
Total income 931 707  
Operating expenses (776) (764)  
Impairment charge 0 (1)  
Profit before tax 155 (58)  
Segment income 931 707  
External income (expense)      
Schedule Of Operating Segments [Line Items]      
Total income 9,845 8,835  
Segment income 9,845 8,835  
External assets 656,379   631,335
External liabilities 613,481   589,355
External income (expense) | Retail £m      
Schedule Of Operating Segments [Line Items]      
Total income 8,337 7,348  
Segment income 8,337 7,348  
External assets 409,956   404,828
External liabilities 328,916   331,241
External income (expense) | Commercial Banking      
Schedule Of Operating Segments [Line Items]      
Total income 1,653 1,431  
Segment income 1,653 1,431  
External assets 89,608   83,410
External liabilities 149,389   143,244
External income (expense) | Other £m      
Schedule Of Operating Segments [Line Items]      
Total income (145) 56  
Segment income (145) 56  
External assets 156,815   143,097
External liabilities 135,176   £ 114,870
Inter-segment (expense) income      
Schedule Of Operating Segments [Line Items]      
Total income 0 0  
Segment income 0 0  
Inter-segment (expense) income | Retail £m      
Schedule Of Operating Segments [Line Items]      
Total income (1,791) (1,387)  
Segment income (1,791) (1,387)  
Inter-segment (expense) income | Commercial Banking      
Schedule Of Operating Segments [Line Items]      
Total income 715 736  
Segment income 715 736  
Inter-segment (expense) income | Other £m      
Schedule Of Operating Segments [Line Items]      
Total income 1,076 651  
Segment income £ 1,076 £ 651