| Network | Network operator | Target (km) | Actual (km) | ||
|---|---|---|---|---|---|
| All networks | 3677.8 | 3818.5 | |||
| Scotland | Scotland Gas Networks plc | 272.0 | 286.4 | ||
| North of England | Northern Gas Networks Limited | 528.1 | 532.9 | ||
| South of England | Southern Gas Networks plc | 664.7 | 671.2 | ||
| Wales & West | Wales & West Utilities Limited | 361.0 | 378.0 | ||
| North West | National Grid Gas plc | 529 | 1852.0 | 568 | 1950.0 |
| East of England | 605 | 664 | |||
| West Midlands | 362 | 383 | |||
| North London | 356 | 335 | |||