Each new seat can be described as a combination of parts of old seats. These tables show this decomposition. The winner of the old seat at the 2019 election is shown by party colour, as is the implied winner of the new seat.
The implied results are calculated using the local election results for the wards which make up each old seat. This should give the most accurate projection, since it reflects varying political behaviour across the seat.
| Party | Old Seats | New Seats | Change | Disappear | Switch Out | Switch In | Fresh |
|---|---|---|---|---|---|---|---|
| CON | 21 | 22 | 1 | 0 | 0 | 1 | 0 |
| LAB | 49 | 50 | 1 | 0 | -1 | 0 | 2 |
| LIB | 3 | 3 | 0 | 0 | 0 | 0 | 0 |
| Brexit | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Green | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| MIN | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total | 73 | 75 | 2 | 0 | -1 | 1 | 2 |
The table shows how the various changes affect each party in this area. The total old and new seats are shown for each party, as well as their difference ('Change'). The change in seats is also explained through the four explanations:
The old seats which are lost to another party are: Eltham.
The new seats which are gained from another party are: Eltham and Chislehurst.
The new seats which are freshly created are: Stratford and Bow; Streatham and Croydon North.
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Barking | 91.3% of Barking | |
| Dagenham and Rainham | 90.0% of Dagenham and Rainham | 8.7% of Barking
3.0% of Hornchurch and Upminster
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Chipping Barnet | 84.7% of Chipping Barnet | 11.8% of Hendon
0.3% of Finchley and Golders Green
|
| Finchley and Golders Green | 99.5% of Finchley and Golders Green | 0.7% of Chipping Barnet |
| Hendon | 88.2% of Hendon |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Bexleyheath and Crayford | 86.6% of Bexleyheath and Crayford | 18.6% of Erith and Thamesmead |
| Old Bexley and Sidcup | 100% of Old Bexley and Sidcup | 12.0% of Bexleyheath and Crayford |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Brent East | 66.4% of Brent Central | 11.5% of Brent North
10.6% of Hampstead and Kilburn
|
| Brent West | 75.9% of Brent North | 18.4% of Brent Central |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Beckenham and Penge | 63.6% of Beckenham | 43.9% of Lewisham West and Penge |
| Bromley and Biggin Hill | 53.5% of Bromley and Chislehurst | 36.4% of Beckenham
13.8% of Orpington
|
| Orpington | 86.2% of Orpington | 18.0% of Bromley and Chislehurst |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Hampstead and Highgate | 63.2% of Hampstead and Kilburn | 16.3% of Holborn and St Pancras
11.2% of Hornsey and Wood Green
|
| Holborn and St Pancras | 83.7% of Holborn and St Pancras | 0.2% of Hampstead and Kilburn |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Cities of London and Westminster | 97.6% of Cities of London and Westminster | 18.7% of Westminster North |
| Queen's Park and Maida Vale | 64.2% of Westminster North | 26.0% of Hampstead and Kilburn
15.1% of Brent Central
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Croydon East | 82.9% of Croydon Central | 9.3% of Croydon South |
| Croydon South | 78.8% of Croydon South | 6.3% of Croydon Central |
| Croydon West | 58.7% of Croydon North | 11.9% of Croydon South
10.9% of Croydon Central
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Ealing Central and Acton | 87.3% of Ealing Central and Acton | 13.8% of Hammersmith |
| Ealing North | 98.1% of Ealing North | |
| Ealing Southall | 100% of Ealing Southall | 12.7% of Ealing Central and Acton
1.9% of Ealing North
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Edmonton and Winchmore Hill | 83.3% of Edmonton | 31.9% of Enfield Southgate |
| Enfield North | 96.8% of Enfield North | 14.5% of Edmonton
2.5% of Enfield Southgate
|
| Southgate and Wood Green | 65.6% of Enfield Southgate | 28.2% of Hornsey and Wood Green
8.1% of Tottenham
3.2% of Enfield North
2.1% of Edmonton
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Eltham and Chislehurst | 85.8% of Eltham | 28.5% of Bromley and Chislehurst |
| Erith and Thamesmead | 81.4% of Erith and Thamesmead | 12.6% of Greenwich and Woolwich
14.2% of Eltham
1.4% of Bexleyheath and Crayford
|
| Greenwich and Woolwich | 87.4% of Greenwich and Woolwich |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Hackney North and Stoke Newington | 76.4% of Hackney North and Stoke Newington | 11.3% of Hackney South and Shoreditch |
| Hackney South and Shoreditch | 81.0% of Hackney South and Shoreditch | 8.6% of Hackney North and Stoke Newington |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Chelsea and Fulham | 96.0% of Chelsea and Fulham | 18.2% of Hammersmith
1.4% of Kensington
|
| Hammersmith and Chiswick | 68.0% of Hammersmith | 28.3% of Brentford and Isleworth |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Hornsey and Friern Barnet | 60.4% of Hornsey and Wood Green | 14.6% of Chipping Barnet
10.7% of Tottenham
0.1% of Finchley and Golders Green
|
| Tottenham | 81.3% of Tottenham | 15.0% of Hackney North and Stoke Newington
0.2% of Hornsey and Wood Green
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Harrow East | 91.2% of Harrow East | 12.6% of Brent North
0.9% of Ruislip, Northwood and Pinner
0.2% of Harrow West
|
| Harrow West | 93.9% of Harrow West | 8.8% of Harrow East |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Hornchurch and Upminster | 95.1% of Hornchurch and Upminster | |
| Romford | 100% of Romford | 1.8% of Hornchurch and Upminster |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Hayes and Harlington | Unchanged | |
| Ruislip, Northwood and Pinner | 83.4% of Ruislip, Northwood and Pinner | 10.0% of Uxbridge and South Ruislip
5.9% of Harrow West
|
| Uxbridge and South Ruislip | 90.0% of Uxbridge and South Ruislip | 15.8% of Ruislip, Northwood and Pinner
0.0% of Hayes and Harlington
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Brentford and Isleworth | 71.7% of Brentford and Isleworth | 8.9% of Twickenham
8.3% of Feltham and Heston
0.0% of Ealing Southall
|
| Feltham and Heston | 91.7% of Feltham and Heston |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Islington North | Unchanged | |
| Islington South and Finsbury | 100% of Islington South and Finsbury | 7.7% of Hackney South and Shoreditch |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Kensington and Bayswater | 98.6% of Kensington | 17.1% of Westminster North
4.0% of Chelsea and Fulham
2.4% of Cities of London and Westminster
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Kingston and Surbiton | 83.7% of Kingston and Surbiton | 8.2% of Richmond Park |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Clapham and Brixton Hill | 51.0% of Streatham | 40.7% of Vauxhall |
| Dulwich and West Norwood | 84.4% of Dulwich and West Norwood | 8.0% of Camberwell and Peckham |
| Streatham and Croydon North | 49.0% of Streatham | 41.3% of Croydon North |
| Vauxhall and Camberwell Green | 59.3% of Vauxhall | 12.3% of Camberwell and Peckham
9.8% of Bermondsey and Old Southwark
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Lewisham East | 86.2% of Lewisham East | 10.0% of Lewisham West and Penge
5.0% of Lewisham Deptford
|
| Lewisham North | 81.4% of Lewisham Deptford | 13.8% of Lewisham East |
| Lewisham West and East Dulwich | 46.1% of Lewisham West and Penge | 15.6% of Dulwich and West Norwood
14.0% of Camberwell and Peckham
13.6% of Lewisham Deptford
|
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Mitcham and Morden | 99.9% of Mitcham and Morden | 10.0% of Wimbledon |
| Wimbledon | 90.0% of Wimbledon | 16.3% of Kingston and Surbiton |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| East Ham | 80.3% of East Ham | |
| Stratford and Bow | 45.7% of West Ham | 24.7% of Bethnal Green and Bow
7.7% of Poplar and Limehouse
|
| West Ham and Beckton | 54.3% of West Ham | 19.7% of East Ham |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Ilford North | 78.1% of Ilford North | 20.8% of Ilford South |
| Ilford South | 79.0% of Ilford South | 10.0% of Dagenham and Rainham |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Richmond Park | 91.8% of Richmond Park | |
| Twickenham | 91.1% of Twickenham |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Bermondsey and Old Southwark | 75.4% of Bermondsey and Old Southwark | 0.8% of Camberwell and Peckham |
| Peckham | 64.9% of Camberwell and Peckham | 14.8% of Bermondsey and Old Southwark |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Carshalton and Wallington | 99.8% of Carshalton and Wallington | 0.4% of Sutton and Cheam
0.1% of Mitcham and Morden
|
| Sutton and Cheam | 99.6% of Sutton and Cheam | 0.2% of Carshalton and Wallington |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Bethnal Green and Stepney | 75.3% of Bethnal Green and Bow | 10.7% of Poplar and Limehouse |
| Poplar and Limehouse | 81.6% of Poplar and Limehouse |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Chingford and Woodford Green | 96.4% of Chingford and Woodford Green | 16.8% of Ilford North |
| Leyton and Wanstead | 100% of Leyton and Wanstead | 5.0% of Ilford North
3.6% of Chingford and Woodford Green
0.2% of Ilford South
|
| Walthamstow | Unchanged |
| New seat | Primary component | Secondary component(s) |
|---|---|---|
| Battersea | 90.7% of Battersea | |
| Putney | 100% of Putney | 9.3% of Battersea |
| Tooting | Unchanged |