Each new seat can be described as a combination of parts of old seats. These table show this decomposition. The winner of the old seat at the 2010 election is shown by party colour, as is the implied winner of the new seat.
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.
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Beverley and Holderness | Unchanged | |
| Goole and Howden | 60.5% of Brigg and Goole | 52.8% of Haltemprice and Howden |
| Grimsby North and Barton | 44.3% of Cleethorpes | 45.6% of Great Grimsby
21.6% of Brigg and Goole
|
| Grimsby South and Cleethorpes | 55.7% of Cleethorpes | 54.4% of Great Grimsby |
| Kingston upon Hull Central | 59.3% of Hull East | 38.1% of Hull West and Hessle
14.0% of Hull North
|
| Kingston upon Hull North | 75.9% of Hull North | 40.7% of Hull East |
| Kingston upon Hull West and Haltemprice | 61.9% of Hull West and Hessle | 47.2% of Haltemprice and Howden
10.1% of Hull North
|
| Scunthorpe | 100% of Scunthorpe | 17.8% of Brigg and Goole |
| Yorkshire East | Unchanged |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Boston and Skegness | 97.8% of Boston and Skegness | 5.1% of Louth and Horncastle |
| Gainsborough | Unchanged | |
| Grantham and Stamford | Unchanged | |
| Lincoln | 90.8% of Lincoln | 14.8% of Sleaford and North Hykeham |
| Louth and Horncastle | 94.9% of Louth and Horncastle | 2.2% of Boston and Skegness |
| Sleaford | 85.2% of Sleaford and North Hykeham | 9.2% of Lincoln |
| South Holland and The Deepings | Unchanged |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Barnsley North and Hemsworth | 76.3% of Barnsley Central | 26.3% of Barnsley East
16.3% of Hemsworth
|
| Barnsley South | 73.7% of Barnsley East | 23.5% of Wentworth and Dearne
12.0% of Barnsley Central
|
| Don Valley | Unchanged | |
| Doncaster Central | Unchanged | |
| Doncaster North | Unchanged | |
| Rother Valley | Unchanged | |
| Rotherham and Sheffield East | 71.5% of Rotherham | 21.7% of Sheffield South East
19.9% of Sheffield Brightside and Hillsborough
|
| Rotherham North | 76.5% of Wentworth and Dearne | 28.5% of Rotherham |
| Sheffield Central | 64.1% of Sheffield Central | 40.9% of Sheffield Brightside and Hillsborough |
| Sheffield Hallam and Penistone | 80.8% of Sheffield Hallam | 34.1% of Penistone and Stocksbridge |
| Sheffield Heeley | 80.2% of Sheffield Heeley | 19.2% of Sheffield Hallam
18.6% of Sheffield Central
|
| Sheffield North and Dodworth | 65.9% of Penistone and Stocksbridge | 39.1% of Sheffield Brightside and Hillsborough
11.7% of Barnsley Central
|
| Sheffield South East | 78.3% of Sheffield South East | 19.8% of Sheffield Heeley
17.3% of Sheffield Central
|