v3.26.1
Other operating costs - Schedule of analysis of expenses by nature (Details) - GBP (£)
£ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Analysis of income and expense [abstract]      
Depreciation, amortisation and impairment £ 2,247 £ 2,175 £ 2,061
Payroll costs 1,992 2,143 2,043
Purchases of electricity 1,489 1,429 1,497
Purchases of gas 2,091 1,578 1,289
Property and other taxes 1,443 1,402 1,279
UK electricity balancing costs 0 1,143 2,486
Impairment of joint venture 0 303 0
Other 3,240 3,071 4,553
Other operating costs 12,502 13,244 15,208
Impairment losses on financial assets 243 200 179
Total operating costs from continuing operations 12,745 13,444 15,387
Operating costs from continuing operations include:      
Inventory consumed 454 506 408
Research and development expenditure £ 38 £ 43 £ 32