M25 crash J17–J16 anticlockwise

Cleared Cleared at 08:42 on 1 Oct 2026, after 2 h 19 min.

Crash on the M25 anticlockwise at J17–J16 on Thursday 1 October 2026, from 06:23. Cleared at 08:42 after 2 h 19 min. Timeline of reports from TomTom and the motorway signs.

1. !

   M25 anticlockwise · J17–J16

   Collision

   Road closed · 06:23–08:42 (cleared after 2 h 19 min) · delay ~6 min · queue 6.0 mi

   TomTom ×9 · Motorway signs

See the M25 on the live map M25 traffic now

Timeline

1. 06:23 TomTom: queueing traffic, “Slow traffic”, delay ~4 min
2. 06:37 TomTom: queueing traffic, “Slow traffic”, delay ~5 min
3. 06:50 TomTom: queueing traffic, “Stationary traffic”, delay ~9 min
4. 06:55 Motorway signs: “COLLISION SLOW DOWN”
5. 06:55 TomTom: delay now ~19 min (was ~9), “Queuing traffic”
6. 07:09 TomTom: “Stationary traffic”
7. 07:22 TomTom: delay now ~43 min (was ~29)
8. 07:27 TomTom: road closed
9. 07:27 TomTom: delay now ~59 min (was ~43)
10. 07:32 TomTom: delay now ~77 min (was ~59)
11. 07:33 TomTom: queueing traffic, “Queuing traffic”, delay ~5 min
12. 07:36 TomTom: “Slow traffic”
13. 07:52 Motorway signs no longer show “COLLISION SLOW DOWN”
14. 08:04 TomTom: delay now ~7 min (was ~56), “Queuing traffic”
15. 08:04 TomTom: queueing traffic, “Stationary traffic”, delay ~51 min
16. 08:14 TomTom: queueing traffic, “Slow traffic”, delay ~3 min
17. 08:14 TomTom: delay now ~28 min (was ~42)
18. 08:14 TomTom: queueing traffic, “Slow traffic”, delay ~5 min (reported again)
19. 08:18 TomTom: delay now ~19 min (was ~28)
20. 08:23 TomTom: “Slow traffic”
21. 08:23 TomTom: delay now ~5 min (was ~19), “Slow traffic”
22. 08:24 TomTom: queueing traffic, “Slow traffic”, delay ~4 min
23. 08:42 TomTom no longer reports it
24. 08:42 All clear: no source reports it any more

What the sources said

• Slow traffic
• Overhead signs read “COLLISION SLOW DOWN” (1 sign; furthest along: M25 anti-clockwise between J17 and J16).
• Closed

Other recent incidents on the M25

• M25 delays J26–J25 anticlockwise · 06:37, still reported
• M25 crash J16 anticlockwise · 06:37, still reported
• M25 stopped traffic J8–J9 · 05:42, cleared after 2 h 14 min
• M25 crash J17–J18 clockwise · 03:07, cleared after 2 h 44 min
• M25 crash J18–J17 anticlockwise · 03:02, cleared after 2 h 49 min
• M25 crash J18–J19 clockwise · yesterday 23:19, cleared after 1 h 31 min
• M25 crash J19–J18 anticlockwise · yesterday 16:04, cleared after 3 h 14 min
• M25 crash J24–J25 clockwise · yesterday 11:42, cleared after 6 h 36 min
• M25 delays J11–J12 clockwise · yesterday 06:45, cleared after 8 h 32 min
• M25 crash J14 clockwise · yesterday 05:45, cleared after 5 h 36 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.