v3.25.4
Taxation - Weighted average of tax rates applicable to accounting profits and loss (Detail) - GBP (£)
£ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Taxation          
Profit before tax £ 2,750 £ 2,557 £ 2,295 £ 2,113 £ 1,797
Tax at average applicable rates (687) (647) (571)    
Tax effect of share of results of joint ventures and associates 11 9 8    
Income not taxable and expenses not deductible 8 16 20    
Non-deductible costs of share based remuneration (1) (2) (1)    
Non-deductible disposal-related losses (24) (7) (22)    
Deferred tax assets of the period not recognised (2) (18) (3)    
Change in recognition and measurement of deferred tax 16 13 4    
Movements in provisions and prior year items 7 23 58    
Tax charge £ (672) £ (613) £ (507) £ (481) £ (326)
Tax at average applicable rates 25.00% 25.30% 24.90%    
Tax effect of share of results of joint ventures and associates (0.40%) (0.40%) (0.30%)    
Income not taxable and expenses not deductible (0.30%) (0.60%) (0.90%)    
Non-deductible costs of share based remuneration 0.00% 0.10% 0.00%    
Non-deductible disposal-related losses 0.90% 0.30% 1.00%    
Deferred tax assets of the period not recognised 0.10% 0.70% 0.10%    
Change in recognition and measurement of deferred tax (0.60%) (0.50%) (0.20%)    
Movements in provisions and prior year items (0.30%) (0.90%) (2.50%)    
Tax charge 24.40% 24.00% 22.10%