M4 crash J18 eastbound

Cleared Cleared at 18:48 on 4 Oct 2026, after 47 min.

Crash on the M4 eastbound at J18 on Sunday 4 October 2026, from 18:01. Cleared at 18:48 after 47 min. Timeline of reports from the motorway signs.

1. !

   M4 eastbound · J18

   Collision

   18:01–18:48 (cleared after 47 min)

   Motorway signs

See the M4 on the live map M4 traffic now

Timeline

1. 18:01 Motorway signs: “COLLISION SLOW DOWN”
2. 18:48 Motorway signs no longer show “COLLISION SLOW DOWN”
3. 18:48 All clear: no source reports it any more

What the sources said

• Overhead signs read “COLLISION SLOW DOWN” (1 sign; furthest along: M4 eastbound within J18).

Other recent incidents on the M4

• M4 delays J14–J15 · 08:49, cleared after 2 h 4 min
• M4 reported crash J13–J14 westbound · yesterday 18:59, cleared after 42 min
• M4 crash J4 eastbound · yesterday 11:19, cleared after 49 min
• M4 crash Westbound · Thu 09:54, cleared after 55 min
• M4 stopped traffic J15–J16 · Thu 07:09, cleared after 12 h 36 min
• M4 stopped traffic J3–J2 · Thu 06:42, cleared after 3 h 14 min
• M4 closed J16–J17 westbound · Thu 01:57, cleared after 43 min
• M4 closed J19–J20 westbound · Wed 21:49, cleared after 8 h 40 min
• M4 closed J16–J17 westbound · Wed 21:42, cleared after 2 h 5 min
• M4 crash J11–J10 eastbound · Wed 21:33, cleared after 9 h 19 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.