M4 | Greater London | Carriageway Closure — Cleared 9 Sep

What happened

The M4 in Greater London is closed in both directions between J4 (London Heathrow Airport) and J3 (Hayes) for a police led incident.

RoadM4

SeveritySevere

StatusCleared

DirectionBoth directions

Started01:27, 9 Sep 2026

Cleared03:31, 9 Sep 2026

01:27, 9 SepFirst report
The M4 in Greater London is closed in both directions between J4 (London Heathrow Airport) and J3 (Hayes) for a police led incident.
02:01, 9 SepUpdate
The M4 in Greater London is closed in both directions between J4 (London Heathrow Airport) and J3 (Hayes) for a police led incident.
02:36, 9 SepUpdate
⏱ Still active — no changes from National Highways. Incident ongoing for 1h 8m. Monitoring continues.
02:41, 9 SepUpdate
The M4 in Greater London is closed in both directions between J4 (London Heathrow Airport) and J3 (Hayes) for a police led incident.
03:11, 9 SepUpdate
⏱ Still active — no changes from National Highways. Incident ongoing for 1h 43m. Monitoring continues.
03:16, 9 SepUpdate
The M4 in Greater London is closed in both directions between J4 (London Heathrow Airport) and J3 (Hayes) for a police led incident.
03:31, 9 SepUpdate
✅ Incident cleared — M4 reopened at 03:31 on 9 Sep 2026. Total disruption: 2h 3m. All lanes open, traffic returning to normal.
08:19, 6 NovFinal update
The M4 in Greater London is closed in both directions between J4 (London Heathrow Airport) and J3 (Hayes) for a police led incident.

Wording from National Highways, recorded as it changed.

Enter when you were on the M4 to check.