M1 crash J20–J21 northbound
Cleared Cleared at 14:17 on 30 Sept 2026, after 1 h 55 min.
Crash on the M1 northbound at J20–J21 on Wednesday 30 September 2026, from 12:22. Cleared at 14:17 after 1 h 55 min. Timeline of reports from the motorway signs and TomTom.
M1 northbound · J20–J21
Collision
12:22–14:17 (cleared after 1 h 55 min) · delay ~37 min · queue 2.5 mi
Motorway signs · TomTom
See the M1 on the live map M1 traffic now
Timeline
- Motorway signs: “COLLISION SLOW DOWN”
- TomTom: collision, “Stationary traffic, Incident”, delay ~18 min
- TomTom: delay now ~29 min (was ~18)
- TomTom: delay now ~55 min (was ~29)
- TomTom: now says queueing traffic, “Stationary traffic”
- TomTom: delay now ~73 min (was ~55)
- TomTom: delay now ~51 min (was ~73)
- 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
- Overhead signs read “COLLISION SLOW DOWN” (2 signs; furthest along: M1 northbound between J20 and J21).
- Stationary traffic
Other recent incidents on the M1
- M1 crash J27–J26 southbound
- M1 crash J14–J13 southbound
- M1 crash J30–J31 northbound
- M1 reported crash J12–J13 northbound
- M1 crash J9–J10 northbound
- M1 crash J8 southbound
- M1 reported crash J36 southbound
- M1 reported crash J37–J38 northbound
- M1 reported crash J29–J29A northbound
- M1 reported crash J23A northbound
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.