v3.26.1
Segmental analysis - Schedule of Reconciliation of Underlying Basis to Statutory Results (Details) - GBP (£)
£ in Millions
 6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Jun. 30, 2025
SEGMENTAL ANALYSIS (Details) - Schedule of Reconciliation of Underlying Basis to Statutory Results [Line Items]      
Net interest income £ 7,105 £ 6,752 £ 6,478
Other income 3,521 3,284 2,908
Underlying income, net of underlying operating lease depreciation 10,626 10,036 9,386
Operating expenses (5,717) (6,526) (5,440)
Impairment (616) (353) (442)
Profit before tax 4,293 3,157 3,504
Adjustments for profit (loss) on disposal of operating lease assets (32) (7) (3)
Restructuring      
SEGMENTAL ANALYSIS (Details) - Schedule of Reconciliation of Underlying Basis to Statutory Results [Line Items]      
Net interest income 0 0 0
Other income 0 0 0
Operating lease depreciation 0 0 0
Underlying income, net of underlying operating lease depreciation 0 0 0
Operating expenses 34 37 9
Impairment 0 0 0
Profit before tax 34 37 9
Volatility and other items      
SEGMENTAL ANALYSIS (Details) - Schedule of Reconciliation of Underlying Basis to Statutory Results [Line Items]      
Net interest income 172 226 177
Other income (334) (258) (68)
Operating lease depreciation (841) (744) (710)
Underlying income, net of underlying operating lease depreciation (1,003) (776) (601)
Operating expenses 891 798 649
Impairment 0 0 0
Profit before tax (112) 22 48
Change in financial assets at fair value through profit or loss 186 45 27
Amortisation of intangible assets 65 46 40
Expense due to unwinding of discount on provisions 9 21 35
Insurance gross up      
SEGMENTAL ANALYSIS (Details) - Schedule of Reconciliation of Underlying Basis to Statutory Results [Line Items]      
Net interest income 1 2 0
Other income 123 125 129
Operating lease depreciation 0 0 0
Underlying income, net of underlying operating lease depreciation 124 127 129
Operating expenses (123) (127) (129)
Impairment (1) 0 0
Profit before tax 0 0 0
Underlying basis      
SEGMENTAL ANALYSIS (Details) - Schedule of Reconciliation of Underlying Basis to Statutory Results [Line Items]      
Net interest income 7,278 6,980 6,655
Other income 3,310 3,151 2,969
Operating lease depreciation (841) (744) (710)
Underlying income, net of underlying operating lease depreciation 9,747 9,387 8,914
Operating expenses (4,915) (5,818) (4,911)
Impairment (617) (353) (442)
Profit before tax £ 4,215 £ 3,216 £ 3,561