M1 crash J20–J21 northbound

Cleared Cleared at 16:02 on 14 Oct 2026, after 1 h 13 min.

Crash on the M1 northbound at J20–J21 on Wednesday 14 October 2026, from 14:49. Cleared at 16:02 after 1 h 13 min. Timeline of reports from TomTom and the motorway signs.

1. !

   M1 northbound · J20–J21

   Collision

   Road closed · 14:49–16:02 (cleared after 1 h 13 min) · delay ~26 min · queue 2.4 mi

   TomTom ×2 · Motorway signs

At its worst: stationary traffic · delay ~96 min

See the M1 on the live map M1 traffic now

Timeline

1. 14:49 Motorway signs: “COLLISION SLOW DOWN”
2. 14:57 TomTom: queueing traffic, “Stationary traffic”, delay ~27 min
3. 15:02 TomTom: now says collision, “Stationary traffic, Accident”
4. 15:20 TomTom: delay now ~31 min (was ~45)
5. 15:34 TomTom: road closed
6. 15:34 TomTom: now says queueing traffic, delay now ~29 min (was ~42), “Stationary traffic”
7. 15:37 Motorway signs no longer show “COLLISION SLOW DOWN”
8. 15:38 TomTom: delay now ~44 min (was ~29)
9. 15:43 TomTom: delay now ~96 min (was ~44)
10. 15:48 TomTom: delay now ~29 min (was ~96)
11. 16:02 TomTom no longer reports it
12. 16:02 All clear: no source reports it any more

What the sources said

• Stationary traffic
• Overhead signs read “COLLISION SLOW DOWN” (1 sign; furthest along: M1 northbound between J20 and J21).
• Closed

Other recent incidents on the M1

• M1 crash J24 southbound · 12:56, cleared after 39 min
• M1 crash J21A–J21 · 10:48, cleared after 2 h 1 min
• M1 delays J9–J10 · 06:13, cleared after 3 h 3 min
• M1 crash J9–J10 · yesterday 21:47, cleared after 1 h 33 min
• M1 crash J33–J34 northbound · yesterday 17:38, cleared after 1 h 52 min
• M1 crash J21A–J22 · yesterday 16:34, cleared after 2 h 4 min
• M1 closed J33–J32 southbound · yesterday 16:27, cleared after 2 h 12 min
• M1 crash J8–J9 northbound · yesterday 16:25, cleared after 6 h 35 min
• M1 closed J31 northbound · yesterday 15:57, cleared after 2 h 13 min
• M1 stopped traffic J22–J23 · yesterday 08:22, cleared after 32 min

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.