M25 crash J16 clockwise
Cleared Cleared at 12:11 on 29 Sept 2026, after 50 min.
Crash on the M25 clockwise at J16 on Tuesday 29 September 2026, from 11:21. Cleared at 12:11 after 50 min. Timeline of reports from TomTom and the motorway signs.
M25 clockwise · J16
Collision
11:21–12:11 (cleared after 50 min) · delay ~17 min · queue 3.7 mi
TomTom · Motorway signs
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Timeline
- TomTom: queueing traffic, “Stationary traffic”, delay ~8 min
- Motorway signs: “COLLISION SLOW DOWN”
- TomTom: delay now ~14 min (was ~8)
- TomTom: delay now ~26 min (was ~17)
- TomTom: delay now ~47 min (was ~33)
- TomTom: delay now ~34 min (was ~51)
- TomTom: delay now ~17 min (was ~34)
- TomTom no longer reports it
- Motorway signs no longer show “COLLISION SLOW DOWN”
- All clear: no source reports it any more
What the sources said
- Stationary traffic
- Overhead signs read “COLLISION SLOW DOWN” (2 signs; furthest along: M25 clockwise within J16 after M40 J1A southbound exit).
Other recent incidents on the M25
- M25 crash J15 anticlockwise
- M25 crash J24 clockwise
- M25 crash J20–J19 anticlockwise
- M25 crash J5–J6 clockwise
- M25 crash J9–J8 anticlockwise
- M25 crash J5–J6 anticlockwise
- M25 crash J16–J17 clockwise
- M25 crash J11–J10 anticlockwise
- M25 crash J24–J25 clockwise
- M25 closed J28–J29 clockwise
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.