M25 crash J27 clockwise

Crash on the M25 clockwise at J27 on Wednesday 23 September 2026, from 14:43. Cleared at 14:41 after 47 h 58 min. Timeline of reports from TomTom and the motorway signs.

Status

Cleared 14:41 on 25 Sept 2026, after 47 h 58 min

Location

M25 clockwise · J27

Reported as

Collision

At its worst

Stationary traffic · delay ~60 min

Sources

TomTom ×6 · Motorway signs ×2

Timeline

1. Wed 14:43 TomTom: collision, “Stationary traffic, Accident”, delay ~6 min
2. Wed 14:43 TomTom: queueing traffic, “Slow traffic”, delay ~3 min
3. Wed 14:43 TomTom: queueing traffic, “Slow traffic”, delay ~6 min
4. Wed 14:43 Motorway signs: “COLLISION SLOW DOWN”
5. Wed 14:47 TomTom: collision, “Accident, Lane closed”
6. Wed 14:47 TomTom: collision, “Incident”
7. Wed 15:06 TomTom: delay now ~26 min (was ~6)
8. Wed 15:20 TomTom: now says queueing traffic, delay now ~60 min (was ~26), “Stationary traffic, Incident”
9. Wed 15:26 Motorway signs no longer show “COLLISION SLOW DOWN”
10. Wed 15:34 TomTom: delay now ~31 min (was ~60), “Stationary traffic”
11. Wed 15:48 TomTom: “Queuing traffic”
12. Wed 16:16 TomTom: delay now ~22 min (was ~16)
13. Wed 16:20 Motorway signs: “REPORT OF OBSTRUCTION”
14. Wed 16:29 TomTom: “Stationary traffic”
15. Wed 16:37 TomTom: queueing traffic, “Queuing traffic”, delay ~8 min
16. Wed 16:43 TomTom: delay now ~16 min (was ~27), “Queuing traffic”
17. Wed 16:56 Motorway signs no longer show “REPORT OF OBSTRUCTION”
18. Wed 16:57 TomTom: delay now ~11 min (was ~16), “Slow traffic”
19. Wed 17:25 TomTom: “Slow traffic”
20. Wed 17:53 TomTom no longer reports it
21. Wed 17:53 All clear: no source reports it any more
22. Fri 14:11 Motorway signs: “COLLISION SLOW DOWN” (reported again)
23. Fri 14:41 Motorway signs no longer show “COLLISION SLOW DOWN”
24. Fri 14:41 All clear: no source reports it any more

Source reports

• Slow traffic
• Accident, Lane closed
• Overhead signs read “COLLISION SLOW DOWN” (3 signs; furthest along: M25 clockwise between J27 and J28).
• Incident
• Overhead signs read “REPORT OF OBSTRUCTION” (2 signs; furthest along: M25 anti-clockwise between J27 and J26).

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 J27.

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