M25 | Kent | Carriageway Closure | Expect Delays

Incident timeline

1. 23:10, 26 JulFirst report

   The M25 in Kent is closed anti-clockwise between J4 (Orpington) and J3 (Swanley), due to a serious collision

2. 23:25, 26 JulUpdate

   The M25 in Kent is closed anti-clockwise between J4 (Orpington) and J3 (Swanley), due to a serious collision

3. 23:55, 26 JulUpdate

   ⏱ Still active — no changes from National Highways. Incident ongoing for 45 minutes. Monitoring continues.

4. 00:00, 27 JulUpdate

   The M25 in Kent is closed anti-clockwise between J4 (Orpington) and J3 (Swanley), due to a serious collision

5. 00:30, 27 JulUpdate

   ⏱ Still active — no changes from National Highways. Incident ongoing for 1h 20m. Monitoring continues.

6. 00:35, 27 JulUpdate

   The M25 in Kent is closed anti-clockwise between J4 (Orpington) and J3 (Swanley), due to a serious collision

7. 01:05, 27 JulUpdate

   ⏱ Still active — no changes from National Highways. Incident ongoing for 1h 55m. Monitoring continues.

8. 01:10, 27 JulUpdate

   The M25 in Kent is closed anti-clockwise between J4 (Orpington) and J3 (Swanley), due to a serious collision

9. 01:25, 27 JulUpdate

   ✅ Incident cleared — M25 reopened at 01:25 on 27 Jul 2026. Total disruption: 2h 15m. All lanes open, traffic returning to normal.

10. 17:25, 5 NovFinal update

    The M25 in Kent is closed anti-clockwise between J4 (Orpington) and J3 (Swanley), due to a serious collision

Wording from National Highways, recorded as it changed.

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