M25 crash J16–J17 clockwise
Cleared Cleared at 10:30 on 24 Sept 2026, after 3 h 47 min.
Crash on the M25 clockwise at J16–J17 on Thursday 24 September 2026, from 06:43. Cleared at 10:30 after 3 h 47 min. Timeline of reports from TomTom and the motorway signs.
M25 clockwise · J16–J17
Collision
1 lane closed · Thu 06:43–Thu 10:30 (cleared after 3 h 47 min) · delay ~6 min · queue 3.8 mi
TomTom ×3 · Motorway signs ×4
See the M25 on the live map M25 traffic now
Timeline
- TomTom: queueing traffic, “Slow traffic”, delay ~5 min
- TomTom: queueing traffic, “Slow traffic”, delay ~3 min
- Motorway signs: “STRANDED VEHICLE-SLOW”
- TomTom: queueing traffic, “Stationary traffic”, delay ~7 min
- TomTom: “Queuing traffic”
- TomTom: delay now ~15 min (was ~9), “Slow traffic”
- TomTom: “Queuing traffic”
- TomTom: “Slow traffic”
- TomTom: delay now ~30 min (was ~23), “Stationary traffic”
- TomTom: “Queuing traffic”
- TomTom: delay now ~58 min (was ~34)
- TomTom: “Slow traffic”
- TomTom: now says broken-down vehicle, “traffic, Broken down vehicle”
- TomTom: now says collision, “Accident, Broken down vehicle”
- Motorway signs: “M25 J16-J17 LANE CLOSED DUE TO COLLISION”
- Motorway signs: “M25 J16 - J17 LANE CLOSED COLLISION”
- Motorway signs: “M25 J16 - J17 LANE CLOSED COLLISION”
- TomTom: “Stationary traffic, Accident”
- TomTom: now says queueing traffic, “Stationary traffic”
- TomTom: “Queuing traffic”
- Motorway signs no longer show “STRANDED VEHICLE-SLOW”
- Motorway signs no longer show “M25 J16 - J17 LANE CLOSED COLLISION”
- Motorway signs no longer show “M25 J16-J17 LANE CLOSED DUE TO COLLISION”
- Motorway signs no longer show “M25 J16 - J17 LANE CLOSED COLLISION”
- All clear: no source reports it any more
- TomTom: “Slow traffic”
- TomTom: “Queuing traffic”
- TomTom: “Slow traffic”
- TomTom: “Queuing traffic”
- TomTom: queueing traffic, “Slow traffic”, delay ~3 min (reported again)
- TomTom: “Slow traffic”
- TomTom no longer reports it
- All clear: no source reports it any more
What the sources said
- Slow traffic
- Overhead signs read “STRANDED VEHICLE-SLOW” (1 sign; furthest along: M25 clockwise between J16 and J17).
- Signs on the M4 eastbound read “M25 J16 - J17 LANE CLOSED COLLISION” (2 signs; e.g. M4 eastbound between J5 and J4B). Marker placed near M25 J16–J17 using the signs there, so it is approximate.
- Signs on the M4 westbound read “M25 J16 - J17 LANE CLOSED COLLISION” (2 signs; e.g. M4 westbound between J4 and J4B). Marker placed near M25 J16–J17 using the signs there, so it is approximate.
- Overhead signs read “M25 J16-J17 LANE CLOSED DUE TO COLLISION” (2 signs; e.g. M25 clockwise between J15 and J16). Marker placed near M25 J16–J17 using the signs there, so it is approximate.
Other recent incidents on the M25
- M25 reported crash J13–J12 anticlockwise
- M25 stopped traffic J17
- M25 crash J27–J28 clockwise
- M25 crash J3–J2 anticlockwise
- M25 crash J13–J12 anticlockwise
- M25 stopped traffic J17 anticlockwise
- M25 closed J24–J25 clockwise
- M25 reported crash J21A–J22 clockwise
- M25 crash J9–J8 anticlockwise
- M25 reported crash J8–J9 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.