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) |
|---|---|---|
| Barrow and Furness | 99.7% of Barrow and Furness | 16.2% of Copeland |
| Carlisle | 92.7% of Carlisle | 26.9% of Penrith and The Border |
| Cumbria West | 73.5% of Copeland | 55.0% of Workington |
| Penrith and Solway | 60.1% of Penrith and The Border | 45.0% of Workington
10.3% of Copeland
7.3% of Carlisle
|
| Westmorland and Lonsdale | 100% of Westmorland and Lonsdale | 13.0% of Penrith and The Border
0.3% of Barrow and Furness
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Bishop Auckland | 100% of Bishop Auckland | 15.4% of Sedgefield |
| City of Durham | 100% of Durham, City of | 11.0% of Sedgefield |
| Darlington | 100% of Darlington | 16.3% of Sedgefield |
| Durham North | 100% of Durham North | 8.8% of Durham North West |
| Durham North West | 91.2% of Durham North West | 10.7% of Blaydon |
| Easington | 92.0% of Easington | 22.3% of Sedgefield |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Gateshead East and Jarrow | 78.0% of Jarrow | 41.1% of Gateshead |
| Gateshead West | 58.9% of Gateshead | 50.7% of Blaydon |
| Houghton and Sunderland South | 100% of Houghton and Sunderland South | 12.3% of Washington and Sunderland West |
| Newcastle upon Tyne Central | 100% of Newcastle upon Tyne Central | 21.5% of Newcastle upon Tyne North |
| Newcastle upon Tyne East | 100% of Newcastle upon Tyne East | 9.9% of Tyneside North |
| Newcastle upon Tyne North and Cramlington | 67.2% of Newcastle upon Tyne North | 36.7% of Blyth Valley
9.7% of Tyneside North
|
| South Shields | 100% of South Shields | 22.0% of Jarrow |
| Sunderland Central | Unchanged | |
| Tynemouth | 89.5% of Tynemouth | 10.1% of Tyneside North |
| Tyneside North | 70.3% of Tyneside North | 10.5% of Tynemouth
11.4% of Newcastle upon Tyne North
6.4% of Blyth Valley
|
| Washington | 87.7% of Washington and Sunderland West | 19.3% of Blaydon |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Berwick, Alnwick and Morpeth | 97.6% of Berwick-upon-Tweed | 30.2% of Wansbeck |
| Blyth and Ashington | 69.8% of Wansbeck | 56.9% of Blyth Valley |
| Hexham | 100% of Hexham | 19.3% of Blaydon
2.4% of Berwick-upon-Tweed
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Hartlepool | 100% of Hartlepool | 8.0% of Easington
1.4% of Sedgefield
|
| Middlesbrough | 87.1% of Middlesbrough | 23.6% of Stockton South |
| Middlesbrough South and Cleveland East | 93.4% of Middlesbrough South and Cleveland East | 7.2% of Middlesbrough |
| Redcar | 100% of Redcar | 6.6% of Middlesbrough South and Cleveland East
5.7% of Middlesbrough
|
| Stockton North and Aycliffe | 75.3% of Stockton North | 33.7% of Sedgefield |
| Stockton South | 76.4% of Stockton South | 24.7% of Stockton North |