M25 crash J29–J30 clockwise

Cleared Cleared at 19:16 on 23 Sept 2026, after 2 h 41 min.

Crash on the M25 clockwise at J29–J30 on Wednesday 23 September 2026, from 16:35. Cleared at 19:16 after 2 h 41 min. Timeline of reports from TomTom, National Highways and the motorway signs.

1. !

   M25 clockwise · J29–J30

   Collision

   Road closed · Wed 16:35–Wed 19:16 (cleared after 2 h 41 min) · delay ~4 min · queue 2.7 mi

   TomTom ×9 · National Highways ×8 · Motorway signs

See the M25 on the live map M25 traffic now

Timeline

1. Wed 16:35 TomTom: queueing traffic, “Stationary traffic”, delay ~3 min
2. Wed 16:36 National Highways: road closed
3. Wed 16:36 National Highways: road closed
4. Wed 16:36 National Highways: road closed
5. Wed 16:36 National Highways: road closed
6. Wed 16:36 National Highways: road closed
7. Wed 16:36 National Highways: road closed
8. Wed 16:36 National Highways: road closed
9. Wed 16:57 TomTom no longer reports it
10. Wed 17:11 TomTom: queueing traffic, “Queuing traffic”, delay ~3 min (reported again)
11. Wed 17:12 TomTom: queueing traffic, “Queuing traffic”, delay ~4 min
12. Wed 17:15 TomTom: broken-down vehicle, “Tunnel closed, Broken down vehicle”, road closed
13. Wed 17:15 TomTom: broken-down vehicle, “Tunnel closed, Broken down vehicle”, road closed
14. Wed 17:25 TomTom: broken-down vehicle, “Broken down vehicle”
15. Wed 17:39 TomTom: “Stationary traffic”
16. Wed 17:39 National Highways: road reopened
17. Wed 17:53 TomTom: “Slow traffic”
18. Wed 17:53 TomTom: queueing traffic, “Stationary traffic”, delay ~14 min
19. Wed 18:02 Motorway signs: “COLLISION SLOW DOWN”
20. Wed 18:06 TomTom: road closed
21. Wed 18:10 National Highways: road reopened
22. Wed 18:10 National Highways: road reopened
23. Wed 18:17 National Highways: road closed
24. Wed 18:21 TomTom: delay now ~25 min (was ~14)
25. Wed 18:31 TomTom: collision, “Accident”
26. Wed 18:34 TomTom: now says collision, delay now ~51 min (was ~25), “Stationary traffic, Accident”
27. Wed 18:40 National Highways: road reopened
28. Wed 18:47 TomTom: queueing traffic, “Stationary traffic”, delay ~2 min
29. Wed 18:48 TomTom: now says queueing traffic, “Stationary traffic”
30. Wed 18:57 Motorway signs no longer show “COLLISION SLOW DOWN”
31. Wed 19:02 TomTom: delay now ~4 min (was ~46), “Slow traffic”
32. Wed 19:04 National Highways: road reopened
33. Wed 19:16 TomTom no longer reports it
34. Wed 19:16 All clear: no source reports it any more

What the sources said

• Queuing traffic
• A282 northbound exit for A206
• A282 northbound within the A296/A225 junction
• A282 northbound between A296/A225 and A206
• Slow traffic
• Tunnel closed, Broken down vehicle
• Broken down vehicle
• Closed
• Overhead signs read “COLLISION SLOW DOWN” (2 signs; furthest along: M25 clockwise between J29 and J30).
• Accident
• Stationary traffic

Other recent incidents on the M25

• M25 reported crash J13–J12 anticlockwise · 05:52, cleared after 53 min
• M25 stopped traffic J17 · yesterday 14:24, cleared after 1 h 19 min
• M25 crash J27–J28 clockwise · yesterday 14:07, cleared after 4 h 48 min
• M25 crash J3–J2 anticlockwise · yesterday 10:52, cleared after 8 h 16 min
• M25 crash J13–J12 anticlockwise · yesterday 10:17, cleared after 9 h 21 min
• M25 stopped traffic J17 anticlockwise · yesterday 09:42, cleared after 10 h 30 min
• M25 closed J24–J25 clockwise · Thu 21:50, cleared after 5 h 46 min
• M25 reported crash J21A–J22 clockwise · Thu 16:44, cleared after 52 min
• M25 crash J9–J8 anticlockwise · Thu 15:05, cleared after 1 h 23 min
• M25 reported crash J8–J9 clockwise · Thu 14:55, cleared after 41 min

About this page

This page shows what the data sources reported about this event and when, merged from every source that reported it at the same place. It doesn't say what caused it or whether anyone was hurt: no source reports that. Times are UK time. For live alerts, follow @motorways.me on Bluesky.