M4 | Berkshire | Carriageway Closure | Expect Delays

Incident timeline

1. 01:47, 29 JulFirst report

   The M4 westbound is closed between J10 (A329(M)) and J11 (Reading) due to a Thames Valley Police led incident.

2. 01:55, 29 JulUpdate

   The M4 westbound is closed between J10 (A329(M)) and J11 (Reading) due to a Thames Valley Police led incident.

3. 02:25, 29 JulUpdate

   ⏱ Still active — no changes from National Highways. Incident ongoing for 37 minutes. Monitoring continues.

4. 02:30, 29 JulUpdate

   The M4 westbound is closed between J10 (A329(M)) and J11 (Reading) due to a Thames Valley Police led incident.

5. 03:00, 29 JulUpdate

   ⏱ Still active — no changes from National Highways. Incident ongoing for 1h 12m. Monitoring continues.

6. 03:05, 29 JulUpdate

   The M4 westbound is closed between J10 (A329(M)) and J11 (Reading) due to a Thames Valley Police led incident.

7. 03:35, 29 JulUpdate

   ⏱ Still active — no changes from National Highways. Incident ongoing for 1h 47m. Monitoring continues.

8. 03:40, 29 JulUpdate

   The M4 westbound is closed between J10 (A329(M)) and J11 (Reading) due to a Thames Valley Police led incident.

9. 04:05, 29 JulUpdate

   ✅ Incident cleared — M4 reopened at 04:05 on 29 Jul 2026. Total disruption: 2h 17m. All lanes open, traffic returning to normal.

10. 19:01, 6 NovFinal update

    The M4 westbound is closed between J10 (A329(M)) and J11 (Reading) due to a Thames Valley Police led incident.

Wording from National Highways, recorded as it changed.

More on the M4

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