After May 7
No overall control. Labour largest party
Council size: 51 seats · 17 up on May 7
Council · Unitary authority
Southend-on-Sea
No overall control. Labour largest party after May 7 2026. (Remained no overall control, previously ncc)
What happened on May 7
Seats won and overall control
Reform UK
9 of 51 seats
Won 8 on May 7 · had 2 before
Next election
May 2030
Whole council every 4 years.
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 Southend-on-Sea
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 |
|---|---|---|---|---|
| Belfairs | Reform UK | Reform UK | 32.8% | high |
| Blenheim Park | Reform UK | Reform UK | 34.1% | high |
| Chalkwell | Reform UK | Green Party | 33.9% | high |
| Eastwood Park | Reform UK | Lib Dem | 33.5% | high |
| Kursaal | Reform UK | Labour | 34.8% | high |
| Leigh | Green Party | Green Party | 32.5% | high |
| Milton | Reform UK | Labour | 34.6% | high |
| Prittlewell | Reform UK | Reform UK | 33.8% | high |
| Shoeburyness | Reform UK | Reform UK | 33.7% | high |
| Southchurch | Conservative | Conservative | 35.6% | high |
| St Laurence | Reform UK | Reform UK | 34.9% | high |
| St Luke's | Reform UK | Reform UK | 34.0% | high |
| Thorpe | Reform UK | Reform UK | 33.5% | high |
| Victoria | Reform UK | Labour | 35.0% | high |
| West Leigh | Reform UK | Conservative | 33.4% | high |
| West Shoebury | Conservative | Reform UK | 35.4% | high |
| Westborough | Reform UK | Labour | 34.7% | high |