v3.26.1
Investments in joint ventures and associates - Disclosure of detailed information about joint ventures and associates (Details) - GBP (£)
£ in Millions
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Statement of financial position        
Non-current assets £ 100,796 £ 92,410 £ 87,946  
Cash and cash equivalents 375 1,178 559 £ 163
Non-current liabilities (59,154) (58,295)    
Current liabilities (9,797) (10,621)    
Net assets 39,330 37,826    
Income statement        
Revenue 17,687 18,378 19,850  
Operating profit 5,431 4,934 4,475  
Profit before tax 4,182 3,650 3,048  
Tax (939) (821) (831)  
Profit after tax from continuing operations 3,243 2,829 £ 2,217  
BritNed Development Limited        
Statement of financial position        
Non-current assets 338 352    
Cash and cash equivalents 65 76    
All other current assets 59 48    
Non-current liabilities (38) (51)    
Non-current financial liabilities (33) (32)    
Current liabilities (44) (39)    
Net assets 347 354    
Investment in joint venture 174 177    
Income statement        
Revenue 151 108    
Depreciation and amortisation (16) (16)    
Other costs (20) (23)    
Operating profit 115 69    
Net interest (expense)/income (2) (1)    
Profit before tax 113 68    
Tax (26) (18)    
Profit after tax from continuing operations 87 50    
Group’s share of post-tax results for the year 44 25    
Nemo Link Limited        
Statement of financial position        
Non-current assets 448 447    
Cash and cash equivalents 128 118    
All other current assets 11 8    
Non-current liabilities (25) (3)    
Non-current financial liabilities (11) (32)    
Current liabilities (103) (109)    
Net assets 448 429    
Investment in joint venture 224 215    
Income statement        
Revenue 108 102    
Depreciation and amortisation (24) (23)    
Other costs (16) (16)    
Operating profit 68 63    
Net interest (expense)/income 1 1    
Profit before tax 69 64    
Tax (17) (16)    
Profit after tax from continuing operations 52 48    
Group’s share of post-tax results for the year £ 26 £ 24