After May 7
Conservative majority
Council size: 54 seats · 54 up on May 7
Council · London borough
Westminster
Conservative majority after May 7 2026. (Majority gained, previously Labour)
What happened on May 7
Seats won and overall control
Reform UK
0 of 54 seats
Won 0 on May 7 · had 0 before
Next election
May 2030
Whole council every 4 years (London cycle).
Post-May 7 composition
Every party's seat count on the new council
Pre-May-7 composition is the latest OCD snapshot of who held each seat; post is pre minus seats up plus actual winners.
How accurate was the model here?
Our 7 May 2026 forecast for Westminster
Locked, sha256-witnessed forecast scored against the actual count. See the full national accuracy audit →
Our locked May 7 forecast
The pre-election prediction
This is the seats-on-the-ballot projection we published before polls opened, used here for accuracy comparison only.
All wards
Per-ward forecast vs actual
| Ward | Our top pick | Actual winner | Predicted share | Confidence |
|---|---|---|---|---|
| Abbey Road | Conservative | Conservative | 38.4% | medium |
| Bayswater | Labour | Conservative | 35.8% | medium |
| Church Street | Labour | Labour | 40.4% | high |
| Harrow Road | Green Party | Labour | 26.3% | medium |
| Hyde Park | Labour | Conservative | 31.0% | medium |
| Knightsbridge & Belgravia | Conservative | Conservative | 39.2% | medium |
| Lancaster Gate | Conservative | Labour | 27.5% | medium |
| Little Venice | Reform UK | Conservative | 28.0% | medium |
| Maida Vale | Labour | Labour | 36.7% | medium |
| Marylebone | Conservative | Conservative | 31.9% | medium |
| Pimlico North | Conservative | Conservative | 34.3% | medium |
| Pimlico South | Labour | Labour | 31.4% | medium |
| Queen's Park | Labour | Labour | 42.4% | medium |
| Regent's Park | Conservative | Conservative | 33.3% | medium |
| St James's | Conservative | Conservative | 33.7% | medium |
| Vincent Square | Conservative | Conservative | 39.2% | medium |
| West End | Conservative | Conservative | 38.0% | medium |
| Westbourne | Labour | Labour | 41.0% | medium |