M25 crash J16–J17 clockwise
Cleared Cleared at 20:32 on 27 Sept 2026, after 4 h 3 min.
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.
M25 clockwise · J16–J17
Collision
16:29–20:32 (cleared after 4 h 3 min) · delay ~19 min · queue 5.5 mi
TomTom ×4 · Motorway signs
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Timeline
- TomTom: queueing traffic, “Slow traffic”, delay ~3 min
- TomTom no longer reports it
- All clear: no source reports it any more
- TomTom: queueing traffic, “Slow traffic”, delay ~5 min (reported again)
- TomTom no longer reports it
- All clear: no source reports it any more
- TomTom: queueing traffic, “Slow traffic”, delay ~6 min (reported again)
- TomTom: queueing traffic, “Queuing traffic”, delay ~5 min
- TomTom: “Slow traffic”
- TomTom: queueing traffic, “Slow traffic”, delay ~3 min (reported again)
- TomTom: queueing traffic, “Slow traffic”, delay ~4 min
- TomTom: delay now ~23 min (was ~3), “Queuing traffic”
- TomTom: queueing traffic, “Slow traffic”, delay ~3 min
- TomTom: “Slow traffic”
- TomTom: delay now ~9 min (was ~4)
- TomTom no longer reports it
- All clear: no source reports it any more
- Motorway signs: “REPORT OF COLLISION”
- Motorway signs no longer show “REPORT OF COLLISION”
- All clear: no source reports it any more
What the sources said
- 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 crash J5–J6 anticlockwise
- M25 crash J11–J10 anticlockwise
- M25 crash J24–J25 clockwise
- M25 closed J28–J29 clockwise
- M25 closed J26–J27 clockwise
- M25 closed J28–J29 clockwise
- M25 closed J29–J30 clockwise
- M25 crash J10–J9 anticlockwise
- M25 crash J8–J9 clockwise
- M25 reported crash J13–J12 anticlockwise
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.