M1 crash J21–J20 southbound

Crash on the M1 southbound at J21–J20 on Wednesday 11 November 2026, from 05:53. Cleared at 06:43 after 50 min. Timeline of reports from the motorway signs.

Status

Cleared 06:43 on 11 Nov 2026, after 50 min

Location

M1 southbound · J21–J20

Reported as

Collision

Sources

Motorway signs

Timeline

1. 05:53 Motorway signs: “COLLISION SLOW DOWN”
2. 06:43 Motorway signs no longer show “COLLISION SLOW DOWN”
3. 06:43 All clear: no source reports it any more

Source reports

• Overhead signs read “COLLISION SLOW DOWN” (2 signs; furthest along: M1 southbound between J21 and J20).

Other recent incidents on the M1

• M1 closed J25–J24A southboundyesterday 23:06 · cleared after 5 h 24 min
• M1 closed J25–J24A southboundyesterday 21:34 · cleared after 1 h
• M1 crash J45 northboundyesterday 19:23 · cleared after 57 min
• M1 stopped traffic J10–J11 northboundyesterday 16:25 · cleared after 2 h 3 min
• M1 crash J34–J33 southboundyesterday 16:20 · cleared after 2 h 51 min
• M1 crash J34–J33 southboundyesterday 13:49 · cleared after 11 min
• M1 crash J32 northboundyesterday 13:48 · cleared after 12 min
• M1 crash J22 northboundyesterday 11:42 · cleared after 57 min
• M1 crash J12–J11A southboundyesterday 10:04 · cleared after 2 h 40 min
• M1 crash J23A–J24 northboundyesterday 06:42 · cleared after 1 h 25 min

Live traffic and past incidents at M1 J21 and M1 J20.

The sources don't report causes or injuries, so neither does this page. Times are UK time. For alerts, follow @motorways.me on Bluesky.