After May 7
Conservative majority
Council size: 53 seats · 51 up on May 7
Council · London borough
Hillingdon
Conservative majority after May 7 2026. (Majority held)
What happened on May 7
Seats won and overall control
Reform UK
4 of 53 seats
Won 4 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 Hillingdon
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 |
|---|---|---|---|---|
| Belmore | Labour | Labour | 41.6% | medium |
| Charville | Labour | Conservative | 37.5% | medium |
| Colham & Cowley | Conservative | Conservative | 39.6% | medium |
| Eastcote | Conservative | Conservative | 33.2% | medium |
| Harefield Village | Conservative | Conservative | 64.1% | medium |
| Hayes Town | Labour | Labour | 45.3% | medium |
| Heathrow Villages | Labour | Labour | 33.5% | medium |
| Hillingdon East | Conservative | Conservative | 52.8% | medium |
| Hillingdon West | n/a | Not yet declared | n/a | none |
| Ickenham & South Harefield | Conservative | Conservative | 32.2% | medium |
| Northwood | Conservative | Conservative | 42.6% | medium |
| Northwood Hills | Conservative | Conservative | 38.0% | medium |
| Pinkwell | Labour | Labour | 45.6% | medium |
| Ruislip | Conservative | Conservative | 40.4% | medium |
| Ruislip Manor | Conservative | Conservative | 46.2% | medium |
| South Ruislip | Conservative | Conservative | 40.8% | medium |
| Uxbridge | Conservative | Conservative | 27.4% | medium |
| West Drayton | Labour | Reform UK | 37.9% | medium |
| Wood End | Labour | Labour | 32.6% | medium |
| Yeading | Labour | Labour | 41.7% | medium |
| Yiewsley | Labour | Reform UK | 36.0% | medium |