M4 crash J10–J8 eastbound

Cleared Cleared at 15:22 on 26 Sept 2026, after 2 h 40 min.

Crash on the M4 eastbound at J10–J8 on Saturday 26 September 2026, from 12:42. Cleared at 15:22 after 2 h 40 min. Timeline of reports from the motorway signs, TomTom and National Highways.

1. !

   M4 eastbound · J10–J8

   Collision

   1 of 4 lanes closed · 12:42–15:22 (cleared after 2 h 40 min) · delay ~5 min · queue 2.4 mi

   Motorway signs ×2 · TomTom · National Highways

See the M4 on the live map M4 traffic now

Timeline

1. 12:42 Motorway signs: “REPORT OF DEBRIS”
2. 12:56 Motorway signs: “COLLISION”
3. 13:02 TomTom: collision, “Stationary traffic, Accident”, delay ~9 min
4. 13:15 TomTom: now says queueing traffic, “Stationary traffic”
5. 13:47 Motorway signs no longer show “REPORT OF DEBRIS”
6. 14:13 National Highways: 1 of 4 lanes closed
7. 14:13 TomTom: “Queuing traffic”
8. 14:31 TomTom no longer reports it
9. 15:17 Motorway signs no longer show “COLLISION”
10. 15:22 National Highways: lane closure lifted
11. 15:22 All clear: no source reports it any more

What the sources said

• Overhead signs read “REPORT OF DEBRIS” (2 signs; furthest along: M4 J8 eastbound access).
• Queuing traffic
• Overhead signs read “COLLISION” (1 sign; furthest along: M4 eastbound between J10 and J8).
• M4 eastbound between J10 and J8

Other recent incidents on the M4

• M4 crash J3–J2 westbound · 17:09, cleared after 42 min
• M4 reported crash J17–J16 eastbound · 03:44, cleared after 1 h
• M4 reported crash J17 westbound · 03:44, cleared after 1 h
• M4 reported crash J18–J17 eastbound · yesterday 11:52, cleared after 49 min
• M4 closed J3–J2 · Thu 22:50, cleared after 5 h 43 min
• M4 closed J41 · Wed 02:48, cleared after 3 h 9 min

About this page

This page shows what the data sources reported about this event and when, merged from every source that reported it at the same place. It doesn't say what caused it or whether anyone was hurt: no source reports that. Times are UK time. For live alerts, follow @motorways.me on Bluesky.