M25 crash J16 anticlockwise

Crash on the M25 anticlockwise at J16 on Friday 23 October 2026, from 15:40. Still reported at 20:12 UK time. Timeline of reports from the motorway signs and TomTom.

Status

Live since 15:40 (4 h 33 min)

Location

M25 anticlockwise · J16

Reported as

Collision

Delay

~26 min

At its worst

Stationary traffic · delay ~42 min

Sources

Motorway signs ×4 · TomTom ×9

Timeline

1. 15:40 Motorway signs: “OBSTRUCTION SLOW DOWN”
2. 16:33 TomTom: queueing traffic, “Stationary traffic”, delay ~33 min
3. 16:34 Motorway signs no longer show “OBSTRUCTION SLOW DOWN”
4. 16:42 TomTom: delay now ~28 min (was ~42), “Queuing traffic”
5. 16:43 TomTom: queueing traffic, “Queuing traffic”, delay ~25 min
6. 16:51 TomTom: “Stationary traffic”
7. 17:01 TomTom: “Queuing traffic”
8. 17:01 TomTom: queueing traffic, “Slow traffic”, delay ~11 min
9. 17:10 TomTom: delay now ~17 min (was ~11), “Queuing traffic”
10. 17:11 TomTom: “Stationary traffic”
11. 17:14 TomTom: queueing traffic, “Stationary traffic”, delay ~8 min
12. 17:14 TomTom: delay now ~5 min (was ~17), “Slow traffic”
13. 17:19 TomTom: “Queuing traffic”
14. 17:23 TomTom: “Slow traffic”
15. 17:28 TomTom: delay now ~25 min (was ~17)
16. 17:29 TomTom: queueing traffic, “Slow traffic”, delay ~7 min
17. 17:37 TomTom: “Stationary traffic”
18. 18:00 TomTom: delay now ~20 min (was ~29)
19. 18:05 TomTom: “Queuing traffic”
20. 18:09 TomTom: “Stationary traffic”
21. 18:14 TomTom: queueing traffic, “Queuing traffic”, delay ~23 min
22. 18:18 TomTom: “Queuing traffic”
23. 18:25 Motorway signs: “REPORT OF COLLISION”
24. 18:32 TomTom: queueing traffic, “Queuing traffic”, delay ~20 min
25. 18:41 TomTom: “Slow traffic”
26. 18:52 Motorway signs: “REPORT OF COLLISION”
27. 19:00 TomTom: queueing traffic, “Slow traffic”, delay ~16 min (reported again)
28. 19:00 TomTom: “Slow traffic”
29. 19:01 TomTom: queueing traffic, “Queuing traffic”, delay ~10 min
30. 19:04 TomTom: delay now ~16 min (was ~10), “Stationary traffic”
31. 19:05 Motorway signs no longer show “REPORT OF COLLISION”
32. 19:18 TomTom: delay now ~30 min (was ~21)
33. 19:33 TomTom: queueing traffic, “Slow traffic”, delay ~7 min
34. 19:35 Motorway signs no longer show “REPORT OF COLLISION”
35. 19:36 TomTom: “Queuing traffic”
36. 19:40 Motorway signs: “REPORT OF COLLISION”
37. 19:55 TomTom: delay now ~5 min (was ~10), “Slow traffic”
38. 20:09 TomTom: delay now ~26 min (was ~20)

Source reports

• Overhead signs read “OBSTRUCTION SLOW DOWN” (4 signs; furthest along: M25 clockwise within J16 after M40 J1A southbound exit).
• Queuing traffic
• Slow traffic
• Overhead signs read “REPORT OF COLLISION” (7 signs; furthest along: M25 anti-clockwise within J16 after M40 J1A northbound exit).
• Stationary traffic
• Overhead signs read “REPORT OF COLLISION” (8 signs; furthest along: M25 anti-clockwise within J16 after M40 J1A northbound exit).
• Overhead signs read “REPORT OF COLLISION” (7 signs; furthest along: M25 clockwise between J15 and J16).

Other recent incidents on the M25

• M25 reported crash J8 anticlockwise15:48 · cleared after 46 min
• M25 stopped traffic J30–J2915:16 · cleared after 3 h 13 min
• M25 crash J9–J8 anticlockwise14:12 · cleared after 3 h 49 min
• M25 crash09:55 · cleared after 3 h 31 min
• M25 stopped traffic J209:51 · cleared after 10 h 1 min
• M25 crash J6–J5 anticlockwise08:43 · Live
• M25 crash J9–J10 clockwise08:40 · cleared after 10 h 58 min
• M25 stopped traffic J14–J13 anticlockwise06:37 · cleared after 10 h 51 min
• M25 crash J25 anticlockwise02:58 · Live
• M25 crash J8 anticlockwise02:16 · cleared after 1 h 15 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.