M621 crash J4 westbound

Crash on the M621 westbound at J4 on Thursday 24 September 2026, from 07:12. Cleared at 09:27 after 2 h 15 min. Timeline of reports from the motorway signs and TomTom.

Status

Cleared 09:27 on 24 Sept 2026, after 2 h 15 min

Location

M621 westbound · J4

Reported as

Collision

Sources

Motorway signs · TomTom ×2

Timeline

1. Thu 07:12 Motorway signs: “REPORT OF COLLISION”
2. Thu 08:04 Motorway signs no longer show “REPORT OF COLLISION”
3. Thu 08:04 All clear: no source reports it any more
4. Thu 08:08 TomTom: queueing traffic, “Slow traffic”, delay ~4 min
5. Thu 08:13 TomTom no longer reports it
6. Thu 08:21 TomTom: queueing traffic, “Slow traffic”, delay ~5 min
7. Thu 08:30 TomTom: “Queuing traffic”
8. Thu 09:00 TomTom: “Stationary traffic”
9. Thu 09:09 TomTom: “Queuing traffic”
10. Thu 09:18 TomTom no longer reports it
11. Thu 09:18 All clear: no source reports it any more
12. Thu 09:22 TomTom: queueing traffic, “Queuing traffic”, delay ~6 min (reported again)
13. Thu 09:27 TomTom no longer reports it

Source reports

• Overhead signs read “REPORT OF COLLISION” (2 signs; furthest along: M621 westbound within J4).
• Slow traffic
• Queuing traffic

Other recent incidents on the M621

• M621 crash J7 eastbound2 Nov 2026 20:52 · cleared after 1 h 30 min
• M621 crash J2–J2A eastbound2 Nov 2026 07:26 · cleared after 1 h 4 min
• M621 crash J1–J2 eastbound30 Oct 2026 17:58 · cleared after 1 h 6 min
• M621 closed J7 eastbound27 Oct 2026 14:04 · cleared after 3 h 39 min
• M621 reported crash J1 westbound24 Oct 2026 17:47 · cleared after 1 h 13 min
• M621 crash J1 westbound20 Oct 2026 20:05 · cleared after 1 h 14 min
• M621 crash J7 westbound19 Oct 2026 07:45 · cleared after 1 h 54 min
• M621 crash J7 eastbound15 Oct 2026 15:55 · cleared after 1 h 21 min
• M621 crash J7 westbound15 Oct 2026 11:09 · cleared after 1 h 5 min
• M621 crash J5 westbound14 Oct 2026 06:49 · cleared after 55 min

Live traffic and past incidents at M621 J4.

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