M25 crash J16–J17 clockwise

Crash on the M25 clockwise at J16–J17 on Sunday 27 September 2026, from 16:29. Cleared at 20:32 after 4 h 3 min. Timeline of reports from TomTom and the motorway signs.

Status

Cleared 20:32 on 27 Sept 2026, after 4 h 3 min

Location

M25 clockwise · J16–J17

Reported as

Collision

At its worst

Delay ~23 min

Sources

TomTom ×4 · Motorway signs

Timeline

1. Sun 16:29 TomTom: queueing traffic, “Slow traffic”, delay ~3 min
2. Sun 16:34 TomTom no longer reports it
3. Sun 16:34 All clear: no source reports it any more
4. Sun 16:39 TomTom: queueing traffic, “Slow traffic”, delay ~5 min (reported again)
5. Sun 16:57 TomTom no longer reports it
6. Sun 16:57 All clear: no source reports it any more
7. Sun 17:01 TomTom: queueing traffic, “Slow traffic”, delay ~6 min (reported again)
8. Sun 17:21 TomTom: queueing traffic, “Queuing traffic”, delay ~5 min
9. Sun 17:29 TomTom: “Slow traffic”
10. Sun 17:34 TomTom: queueing traffic, “Slow traffic”, delay ~3 min (reported again)
11. Sun 18:16 TomTom: queueing traffic, “Slow traffic”, delay ~4 min
12. Sun 18:24 TomTom: delay now ~23 min (was ~3), “Queuing traffic”
13. Sun 18:38 TomTom: queueing traffic, “Slow traffic”, delay ~3 min
14. Sun 18:42 TomTom: “Slow traffic”
15. Sun 18:52 TomTom: delay now ~9 min (was ~4)
16. Sun 19:33 TomTom no longer reports it
17. Sun 19:33 All clear: no source reports it any more
18. Sun 19:56 Motorway signs: “REPORT OF COLLISION”
19. Sun 20:32 Motorway signs no longer show “REPORT OF COLLISION”
20. Sun 20:32 All clear: no source reports it any more

Source reports

• Slow traffic
• Overhead signs read “REPORT OF COLLISION” (10 signs; furthest along: M25 clockwise between J16 and J17).

Other recent incidents on the M25

• M25 closed J17–J16 anticlockwise10:16 · cleared after 44 min
• M25 crash J7 clockwise09:04 · cleared after 4 h 48 min
• M25 crash J7 anticlockwise08:41 · cleared after 5 h 11 min
• M25 stopped traffic J306:44 · cleared after 1 h 54 min
• M25 stopped traffic J12–J13 clockwise06:38 · cleared after 5 h 16 min
• M25 reported crash J5 clockwise06:32 · cleared after 33 min
• M25 crash J27 anticlockwise06:29 · cleared after 7 h 23 min
• M25 stopped traffic J13–J12 anticlockwise04:24 · cleared after 7 h 48 min
• M25 closed J28–J2900:42 · cleared after 2 h 36 min
• M25 crash J26–J27 clockwiseyesterday 18:58 · cleared after 1 h 54 min

Live traffic and past incidents at M25 J16 and M25 J17.

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