M1 crash J21A–J21 southbound

Crash on the M1 southbound at J21A–J21 on Saturday 24 October 2026, from 21:03. Cleared at 22:13 after 1 h 10 min. Timeline of reports from the motorway signs and National Highways.

Status

Cleared 22:13 on 24 Oct 2026, after 1 h 10 min

Location

M1 southbound · J21A–J21

Reported as

Collision

Lanes

1 of 5 lanes closed

Sources

Motorway signs · National Highways ×2

Timeline

1. Sat 21:03 Motorway signs: “COLLISION SLOW DOWN”
2. Sat 21:11 National Highways: 1 of 5 lanes closed
3. Sat 21:38 National Highways: 1 of 5 lanes closed
4. Sat 22:00 Motorway signs no longer show “COLLISION SLOW DOWN”
5. Sat 22:13 National Highways: lane closure lifted
6. Sat 22:13 All clear: no source reports it any more

Source reports

• Overhead signs read “COLLISION SLOW DOWN” (2 signs; furthest along: M1 southbound between J21A and J21).
• M1 southbound between J21A and J21

Other recent incidents on the M1

• M1 crash J42–J43 northboundyesterday 22:32 · cleared after 1 h 21 min
• M1 crash J43–J42 southboundyesterday 20:39 · cleared after 1 h 44 min
• M1 crash J9–J10 northboundyesterday 19:33 · cleared after 49 min
• M1 crash J17–J16 southboundyesterday 15:34 · cleared after 47 min
• M1 crash J34 northboundyesterday 15:09 · cleared after 42 min
• M1 crash J22–J23 northboundyesterday 14:46 · cleared after 47 min
• M1 crash J20–J21 northboundyesterday 12:30 · cleared after 2 h 51 min
• M1 crash J37–J36 southboundyesterday 08:35 · cleared after 44 min
• M1 stopped traffic J32–J33 northboundyesterday 07:33 · cleared after 1 h 16 min
• M1 crash J8–J9 northboundyesterday 06:00 · cleared after 3 h 31 min

Live traffic and past incidents at M1 J21A and M1 J21.

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