v3.25.3
Earnings per share (Details) - GBP (£)
£ / shares in Units, £ in Millions, shares in Millions
6 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Basic earnings per share [abstract]    
Profit after tax from continuing operations attributable to the parent £ 617 £ 571
Profit after tax from discontinued operations attributable to the parent 0 76
Total profit after tax attributable to the parent £ 617 £ 647
Basic earnings per share (continuing) (in GBP per share) £ 0.126 £ 0.126
Basic earnings per share (discontinued) (in GBP per share) 0 0.017
Basic earnings per share (continuing and discontinued) (in GBP per share) £ 0.126 £ 0.143
Weighted average number of shares - basic (in shares) 4,926 4,526
Diluted earnings per share [abstract]    
Profit after tax from continuing operations attributable to the parent £ 617 £ 571
Profit after tax from discontinued operations attributable to the parent 0 76
Total profit after tax attributable to the parent £ 617 £ 647
Diluted earnings per share (continuing) (in GBP per share) £ 0.125 £ 0.126
Diluted earnings per share (discontinued) (in GBP per share) 0 0.016
Diluted earnings per share (continuing and discontinued) (in GBP per share) £ 0.125 £ 0.142
Weighted average number of shares - diluted (in shares) 4,950 4,547