, HSE has approved the replacement programmes in Table 1 for the year April 2007 – end March 2008.| Network | Network operator | Target (km) | |
|---|---|---|---|
| All networks | 3600.1 | ||
| Scotland | Scotland Gas Networks plc | 272 | |
| North of England | Northern Gas Networks Limited | 528.1 | |
| South of England | Southern Gas Networks plc | 604* | |
| Wales & West | Wales & West Utilities Limited | 361 | |
| North West | National Grid Gas plc (NGG plc) | 518 | 1835 |
| East of England | 588 | ||
| West Midlands | 367 | ||
| London | 362 | ||
* The Approved programme for South of England Network includes an additional 3km shortfall from 2006 – 7.