| Property, plant and equipment | 75,113a | 74,791a |
| Interests in leasehold land held for own use | 4,837a | 5,033a |
| Goodwill | 33,623a | 33,623a |
| Interest in a joint venture | 887a | 895a |
| Derivative financial instruments | 616a | 737a |
| Employee retirement benefit scheme assets | 1,053a | 968a |
| Non-current assets | 116,129a | 116,047a |
| Inventories | 982a | 1,003a |
| Trade and other receivables | 1,358a | 1,469a |
| Bank deposits and cash | 30a | 21a |
| Current assets | 2,370a | 2,493a |
| Trade and other payables and contract liabilities | -2,787a | -3,417a |
| Fuel clause recovery account | -215a | -53a |
| Current portion of bank loans and other interest-bearing borrowings | -727a | -715a |
| Bank overdrafts - unsecured | -45a | -44a |
| Current tax payable | -224a | -889a |
| Current liabilities | -3,998a | -5,118a |
| Net current liabilities | -1,628a | -2,625a |
| Total assets less current liabilities | 114,501a | 113,422a |
| Bank loans and other interest-bearing borrowings | -50,083a | -49,447a |
| Derivative financial instruments | -156a | -181a |
| Customers’ deposits | -2,507a | -2,449a |
| Deferred tax liabilities | -10,140a | -10,124a |
| Employee retirement benefit scheme liabilities | -56a | -191a |
| Other non-current liabilities | -1,401a | -1,382a |
| Non-current liabilities | -64,343a | -63,774a |
| Scheme of control fund and reserve | -868a | -670a |
| Net assets | 49,290a | 48,978a |
| Capital and reserves | — | — |
| Share capital | 8a | 8a |
| Reserves | 49,282a | 48,970a |
| Total equity | 49,290a | 48,978a |