M25 crash J29–J30 clockwise

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.

Status

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

Location

M25 clockwise · J29–J30

Reported as

Collision

Lanes

Road closed

At its worst

Stationary traffic · delay ~51 min

Sources

TomTom ×9 · National Highways ×8 · Motorway signs

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

Source reports

• 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 crash J10–J9 anticlockwise02:51 · cleared after 33 min
• M25 crash J27–J28 clockwise02:13 · cleared after 1 h 29 min
• M25 crash J15 anticlockwise00:20 · cleared after 25 min
• M25 crash J11–J10 anticlockwiseyesterday 22:19 · cleared after 52 min
• M25 reported crash J11 anticlockwiseyesterday 21:53 · cleared after 49 min
• M25 crash J16–J17 clockwiseyesterday 14:21 · cleared after 5 h 2 min
• M25 reported crash J11–J12 clockwiseyesterday 13:24 · cleared after 1 h 8 min
• M25 crash J27–J28 clockwiseyesterday 12:31 · cleared after 37 min
• M25 crash J13–J12 anticlockwiseyesterday 06:52 · cleared after 2 h 55 min
• M25 stopped traffic J30yesterday 06:49 · cleared after 2 h 8 min

Live traffic and past incidents at M25 J29 and M25 J30.

The sources don't report causes or injuries, so neither does this page. Times are UK time. For alerts, follow @motorways.me on Bluesky.