M1 crash J21A–J21 southbound

Crash on the M1 southbound at J21A–J21 on Monday 19 October 2026, from 06:43. Cleared at 13:10 after 6 h 27 min. Timeline of reports from TomTom and the motorway signs.

Status

Cleared 13:10 on 19 Oct 2026, after 6 h 27 min

Location

M1 southbound · J21A–J21

Reported as

Incident

At its worst

Stationary traffic · delay ~25 min

Sources

TomTom ×3 · Motorway signs

Timeline

1. 06:43 TomTom: queueing traffic, “Slow traffic”, delay ~5 min
2. 06:48 TomTom: “Queuing traffic”
3. 07:15 TomTom: “Stationary traffic”
4. 07:24 TomTom: “Queuing traffic”
5. 07:29 TomTom: “Stationary traffic”
6. 08:05 TomTom: “Queuing traffic”
7. 08:33 Motorway signs: “INCIDENT SLOW DOWN”
8. 08:47 TomTom: delay now ~8 min (was ~13), “Slow traffic”
9. 08:56 TomTom: “Queuing traffic”
10. 09:00 TomTom: “Slow traffic”
11. 09:05 TomTom: “Queuing traffic”
12. 09:14 TomTom: “Slow traffic”
13. 09:51 TomTom no longer reports it
14. 12:08 TomTom: collision, “Stationary traffic, Incident”, delay ~15 min
15. 12:13 TomTom: now says queueing traffic, “Stationary traffic”
16. 12:18 TomTom: delay now ~9 min (was ~18)
17. 12:22 TomTom: delay now ~4 min (was ~9), “Slow traffic”
18. 12:27 TomTom: queueing traffic, “Slow traffic”, delay ~4 min
19. 12:31 TomTom no longer reports it
20. 13:10 Motorway signs no longer show “INCIDENT SLOW DOWN”
21. 13:10 All clear: no source reports it any more

Source reports

• Slow traffic
• Overhead signs read “INCIDENT SLOW DOWN” (1 sign; furthest along: M1 southbound between J21A and J21).

Other recent incidents on the M1

• M1 crash J28–J29 northbound09:18 · Live
• M1 crash J27–J28 northbound09:09 · cleared after 1 h
• M1 crash J17–J16 southbound08:33 · cleared after 3 h 6 min
• M1 reported crash J47–J46 southbound07:47 · cleared after 52 min
• M1 reported crash J26–J25 southbound07:01 · cleared after 37 min
• M1 stopped traffic J13–J12 southbound06:17 · cleared after 1 h 52 min
• M1 stopped traffic J40–J41 northbound06:16 · cleared after 3 h 4 min
• M1 delays J11A–J12 northbound06:03 · cleared after 4 h 7 min
• M1 crash J34 southbound04:49 · cleared after 1 h 50 min
• M1 crash J10–J9 southboundyesterday 19:35 · cleared after 4 h 48 min

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