The implied results are now calculated using the local election results for the wards which make up each old seat. This should be more accurate than the earlier implied results which assumed each constituency was homogeneous.
The main change in the Severn region is Staffordshire Moorlands which (at May 2005) would have been Conservative rather than Labour.
| New seat | Primary component | Secondary component | ||
| Chester, City of | 98.7% of Chester, City of | |||
| Congleton | Unchanged | |||
| Crewe and Nantwich | 99.5% of Crewe and Nantwich | 4.8% of Eddisbury | ||
| Eddisbury | 90.1% of Eddisbury | 0.8% of Chester, City of
0.7% of Ellesmere Port and Neston 0.5% of Crewe and Nantwich | ||
| Ellesmere Port and Neston | 99.3% of Ellesmere Port and Neston | 0.6% of Chester, City of | ||
| Halton | 100% of Halton | 6.4% of Weaver Vale | ||
| Macclesfield | 100% of Macclesfield | 0.4% of Tatton | ||
| Tatton | 99.6% of Tatton | 1.0% of Weaver Vale | ||
| Warrington North | 93.6% of Warrington North | 4.6% of Warrington South | ||
| Warrington South | 95.4% of Warrington South | 6.4% of Warrington North | ||
| Weaver Vale | 92.6% of Weaver Vale | 5.1% of Eddisbury |
| New seat | Primary component | Secondary component | ||
| Bromsgrove | Unchanged | |||
| Hereford and South Herefordshire | 96.8% of Hereford | 0.5% of Leominster | ||
| Herefordshire North | 88.0% of Leominster | 3.2% of Hereford | ||
| Redditch | 100% of Redditch | 2.6% of Worcestershire Mid | ||
| Worcester | Unchanged | |||
| Worcestershire Mid | 97.4% of Worcestershire Mid | 0.8% of Worcestershire West | ||
| Worcestershire West | 99.2% of Worcestershire West | 8.3% of Leominster | ||
| Wyre Forest | 100% of Wyre Forest | 3.3% of Leominster |
| New seat | Primary component | Secondary component | ||
| Ludlow | Unchanged | |||
| Shrewsbury and Atcham | Unchanged | |||
| Shropshire North | Unchanged | |||
| Telford | 99.7% of Telford | 6.8% of Wrekin, The | ||
| Wrekin, The | 93.2% of Wrekin, The | 0.3% of Telford |
| New seat | Primary component | Secondary component | ||
| Burton | 93.9% of Burton | |||
| Cannock Chase | 96.3% of Cannock Chase | |||
| Lichfield | 100% of Lichfield | 6.1% of Burton | ||
| Newcastle-under-Lyme | Unchanged | |||
| Stafford | 99.0% of Stafford | 2.7% of Stone | ||
| Staffordshire Moorlands | 76.3% of Staffordshire Moorlands | 9.1% of Stoke-on-Trent North
5.5% of Stone | ||
| Staffordshire South | 100% of Staffordshire South | 3.7% of Cannock Chase | ||
| Stoke-on-Trent Central | 96.5% of Stoke-on-Trent Central | 3.9% of Stoke-on-Trent South
1.4% of Stoke-on-Trent North | ||
| Stoke-on-Trent North | 89.5% of Stoke-on-Trent North | 23.7% of Staffordshire Moorlands
3.5% of Stoke-on-Trent Central | ||
| Stoke-on-Trent South | 96.1% of Stoke-on-Trent South | |||
| Stone | 91.8% of Stone | 1.0% of Stafford | ||
| Tamworth | Unchanged |