M4 crash J18

Crash on the M4 at J18 on Wednesday 21 October 2026, from 07:27. Cleared at 07:50 after 23 min. Timeline of reports from TomTom.

Status

Cleared 07:50 on 21 Oct 2026, after 23 min

Location

M4 · J18

Reported as

Queueing traffic

At its worst

Delay ~7 min

Sources

TomTom

Timeline

1. 07:27 TomTom: collision, “Stationary traffic, Incident”, delay ~6 min
2. 07:32 TomTom: “Queuing traffic, Incident”
3. 07:41 TomTom: now says queueing traffic, “Slow traffic”
4. 07:46 TomTom: “Queuing traffic”
5. 07:50 TomTom no longer reports it
6. 07:50 All clear: no source reports it any more

Source reports

• Queuing traffic

Other recent incidents on the M4

• M4 crash J19–J20 westbound06:54 · cleared after 2 h 33 min
• M4 closed J20–J21 westboundyesterday 21:17 · cleared after 7 h 26 min
• M4 crash J6–J5 eastboundyesterday 14:41 · cleared after 1 h 42 min
• M4 stopped traffic J13–J12 eastboundyesterday 12:38 · cleared after 1 h 49 min
• M4 stopped traffic J13–J12yesterday 12:04 · cleared after 28 min
• M4 crash J10 westboundyesterday 11:57 · cleared after 2 h 5 min
• M4 reported crash J13–J12 eastboundyesterday 11:48 · cleared after 58 min
• M4 reported crash J13–J12 eastboundyesterday 07:24 · cleared after 51 min
• M4 stopped traffic J20–J21yesterday 07:14 · cleared after 2 h 19 min
• M4 crash EastboundMon 18:36 · cleared after 6 h 25 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.