M25 crash J23–J24 clockwise

Crash on the M25 clockwise at J23–J24 on Wednesday 23 September 2026, from 06:35. Cleared at 08:29 after 457 h 54 min. Timeline of reports from TomTom, the motorway signs and National Highways.

Status

Cleared 08:29 on 12 Oct 2026, after 457 h 54 min

Location

M25 clockwise · J23–J24

Reported as

Collision

Lanes

2 of 4 lanes closed

At its worst

Delay ~17 min

Sources

TomTom ×5 · Motorway signs ×5 · National Highways ×2

Timeline

1. Wed 06:35 TomTom: collision, “Stationary traffic, Accident”, delay ~17 min
2. Wed 06:46 Motorway signs: “COLLISION ON SLIP ROAD[HCA0]”
3. Wed 06:46 Motorway signs: “INCIDENT [HCA2]”
4. Wed 07:01 TomTom: now says queueing traffic, delay now ~5 min (was ~17), “Queuing traffic”
5. Wed 07:15 TomTom no longer reports it
6. Wed 07:43 TomTom: queueing traffic, “Slow traffic”, delay ~3 min (reported again)
7. Wed 07:57 TomTom no longer reports it
8. Wed 08:13 TomTom: collision, “Accident, Lane closed”
9. Wed 08:13 TomTom: collision, “Accident, Lane closed”
10. Wed 08:13 TomTom: collision, “Accident, Lane closed”
11. Wed 09:37 Motorway signs: “COLLISION [HCA0]”
12. Wed 09:55 Motorway signs no longer show “COLLISION ON SLIP ROAD[HCA0]”
13. Wed 09:55 Motorway signs no longer show “INCIDENT [HCA2]”
14. Wed 10:37 TomTom: queueing traffic, “Queuing traffic”, delay ~3 min
15. Wed 10:40 Motorway signs: “COLLISION”
16. Wed 10:40 National Highways: 1 of 4 lanes closed
17. Wed 10:57 TomTom: now says collision, delay now ~16 min (was ~3), “Stationary traffic, Accident”
18. Wed 11:04 Motorway signs: “INCIDENT”
19. Wed 11:11 TomTom: collision, “Accident, Lane closed” (reported again)
20. Wed 11:11 TomTom: delay now ~4 min (was ~16), “Slow traffic, Accident”
21. Wed 11:25 TomTom: “Heavy traffic, Accident”
22. Wed 11:25 Motorway signs no longer show “COLLISION”
23. Wed 12:07 National Highways: lane closure lifted
24. Wed 12:48 TomTom no longer reports it
25. Wed 12:55 Motorway signs no longer show “COLLISION [HCA0]”
26. Wed 12:55 Motorway signs no longer show “INCIDENT”
27. Wed 12:55 All clear: no source reports it any more
28. Thu 12:25 Motorway signs: “COLLISION” (reported again)
29. Thu 12:55 Motorway signs no longer show “COLLISION”
30. Thu 12:55 All clear: no source reports it any more
31. Mon 07:38 National Highways: 2 of 4 lanes closed
32. Mon 07:59 Motorway signs: “COLLISION” (reported again)
33. Mon 08:17 National Highways: lane closure lifted
34. Mon 08:29 Motorway signs no longer show “COLLISION”
35. Mon 08:29 All clear: no source reports it any more

Source reports

• Slow traffic
• Overhead signs read “COLLISION ON SLIP ROAD[HCA0]” (1 sign; furthest along: M25 clockwise between J23 and J24).
• Overhead signs read “INCIDENT [HCA2]” (1 sign; furthest along: M25 clockwise within J24).
• Accident, Lane closed
• Overhead signs read “COLLISION [HCA0]” (1 sign; furthest along: M25 clockwise within J24).
• Heavy traffic, Accident
• Overhead signs read “COLLISION” (2 signs; furthest along: M25 clockwise between J23 and J24).
• Overhead signs read “INCIDENT” (1 sign; furthest along: M25 clockwise between J23 and J24).
• M25 clockwise between J23 and J24

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 J23 and M25 J24.

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