v3.26.1
Tax - Schedule of components of tax expense (Details) - GBP (£)
£ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Current tax:      
Total current tax from continuing operations £ (154) £ 38 £ 366
Deferred tax:      
Total deferred tax from continuing operations 1,093 783 465
Total tax charge from continuing operations 939 821 831
UK      
Current tax:      
Corporation tax 9 66 410
Corporate tax adjustment in respect of prior years (4) (36) (36)
Total current tax from continuing operations 5 30 374
Deferred tax:      
Deferred tax 642 524 388
Deferred tax adjustment in respect of prior years (7) 25 43
Total deferred tax from continuing operations 635 549 431
Overseas      
Current tax:      
Corporation tax 9 47 82
Corporate tax adjustment in respect of prior years (168) (39) (90)
Total current tax from continuing operations (159) 8 (8)
Deferred tax:      
Deferred tax 289 195 (40)
Deferred tax adjustment in respect of prior years 169 39 74
Total deferred tax from continuing operations £ 458 £ 234 £ 34