| Distribution network owner | Distribution network operator | |
|---|---|---|
| 1 | Electricity North West Limited | Electricity North West Limited |
| 2 | Northern Powergrid | Northern Powergrid (Northeast) Limited |
| Northern Powergrid (Yorkshire) plc | ||
| 3 | Western Power Distribution | Western Power Distribution (West Midlands) plc |
| Western Power Distribution (East Midlands) plc | ||
| Western Power Distribution (South Wales) plc | ||
| Western Power Distribution (South West) | ||
| 4 | UK Power Networks | London Power Networks plc |
| South Eastern Power Networks | ||
| 5 | SP Energy Networks | SP Distribution plc |
| SP Manweb plc | ||
| 6 | Scottish & Southern Electricity Networks | Scottish Hydro Electric Power Distribution plc |
| Southern Electric Power Distribution plc |