M25 crash J27–J28 clockwise

Crash on the M25 clockwise at J27–J28 on Wednesday 21 October 2026, from 16:55. Cleared at 20:24 after 3 h 28 min. Timeline of reports from TomTom and the motorway signs.

Status

Cleared 20:24 on 21 Oct 2026, after 3 h 28 min

Location

M25 clockwise · J27–J28

Reported as

Collision

At its worst

Stationary traffic · delay ~38 min

Sources

TomTom ×3 · Motorway signs ×3

Timeline

1. 16:55 TomTom: queueing traffic, “Slow traffic”, delay ~3 min
2. 17:01 TomTom no longer reports it
3. 17:01 All clear: no source reports it any more
4. 17:05 TomTom: queueing traffic, “Slow traffic”, delay ~6 min
5. 17:18 TomTom: “Queuing traffic”
6. 17:37 TomTom: “Slow traffic”
7. 17:46 TomTom: “Queuing traffic”
8. 18:04 TomTom: delay now ~20 min (was ~13), “Stationary traffic”
9. 18:09 TomTom: delay now ~31 min (was ~20)
10. 18:18 TomTom: delay now ~23 min (was ~38)
11. 18:22 TomTom: “Queuing traffic”
12. 18:27 TomTom: delay now ~11 min (was ~17)
13. 18:45 TomTom: queueing traffic, “Slow traffic”, delay ~4 min
14. 18:50 TomTom no longer reports it
15. 18:50 All clear: no source reports it any more
16. 19:00 Motorway signs: “COLLISION SLOW DOWN”
17. 19:03 Motorway signs: “REPORT OF OBSTRUCTION”
18. 19:04 TomTom: queueing traffic, “Slow traffic”, delay ~4 min (reported again)
19. 19:08 TomTom: “Queuing traffic”
20. 19:17 TomTom: “Slow traffic”
21. 19:27 TomTom no longer reports it
22. 19:33 Motorway signs: “REPORT OF COLLISION”
23. 19:53 Motorway signs no longer show “COLLISION SLOW DOWN”
24. 19:53 Motorway signs no longer show “REPORT OF OBSTRUCTION”
25. 20:24 Motorway signs no longer show “REPORT OF COLLISION”
26. 20:24 All clear: no source reports it any more

Source reports

• Slow traffic
• Overhead signs read “COLLISION SLOW DOWN” (2 signs; furthest along: M25 clockwise between J27 and J28).
• Overhead signs read “REPORT OF OBSTRUCTION” (2 signs; furthest along: M25 clockwise between J27 and J28).
• Overhead signs read “REPORT OF COLLISION” (1 sign; furthest along: M25 clockwise between J27 and J28).

Other recent incidents on the M25

• M25 crash J10–J9 clockwise19:03 · cleared after 1 h 20 min
• M25 reported crash J27 anticlockwise19:03 · cleared after 1 h 21 min
• M25 stopped traffic J17–J1618:54 · cleared after 24 min
• M25 reported crash J10 clockwise18:43 · cleared after 40 min
• M25 reported crash J29 clockwise18:42 · cleared after 41 min
• M25 stopped traffic J15–J1615:18 · cleared after 3 h 51 min
• M25 stopped traffic J5–J6 clockwise14:57 · cleared after 2 h 49 min
• M25 stopped traffic J3–J2 anticlockwise10:36 · cleared after 9 h 6 min
• M25 crash J25–J24 anticlockwise10:12 · cleared after 1 h 41 min
• M25 crash J17–J18 clockwise09:43 · cleared after 1 h 34 min

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