M4 crash J10 westbound

Crash on the M4 westbound at J10 on Tuesday 20 October 2026, from 11:57. Still reported at 13:58 UK time. Timeline of reports from the motorway signs, National Highways and TomTom.

Status

Live since 11:57 (2 h 1 min)

Location

M4 westbound · J10

Reported as

Collision

Lanes

2 of 4 lanes closed

At its worst

Delay ~10 min

Sources

Motorway signs · National Highways ×4 · TomTom

Timeline

1. 11:57 Motorway signs: “INCIDENT”
2. 11:57 National Highways: 2 of 4 lanes closed
3. 12:37 TomTom: collision, “Stationary traffic, Incident”, delay ~10 min
4. 12:40 National Highways: 2 of 4 lanes closed
5. 12:40 National Highways: 2 of 4 lanes closed
6. 12:40 National Highways: 2 of 4 lanes closed
7. 12:41 TomTom no longer reports it
8. 12:56 National Highways: lane closure lifted
9. 13:46 Motorway signs no longer show “INCIDENT”

Source reports

• Overhead signs read “INCIDENT” (3 signs; furthest along: M4 westbound between J10 and J11).
• M4 westbound between J10 and J11
• Stationary traffic, Incident

Other recent incidents on the M4

• M4 stopped traffic J13–J12 eastbound12:38 · Live
• M4 stopped traffic J13–J1212:04 · cleared after 28 min
• M4 reported crash J13–J12 eastbound11:48 · cleared after 58 min
• M4 reported crash J13–J12 eastbound07:24 · cleared after 51 min
• M4 stopped traffic J20–J2107:14 · cleared after 2 h 19 min
• M4 crash Eastboundyesterday 18:36 · cleared after 6 h 25 min
• M4 stopped traffic J14–J15yesterday 13:41 · cleared after 32 min
• M4 crash J18 eastboundyesterday 06:45 · cleared after 6 h 56 min
• M4 crash J15–J14 eastboundSun 18:24 · cleared after 1 h 36 min
• M4 stopped traffic J13–J14Sun 17:28 · cleared after 1 h 9 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.