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Corridor watch · United Kingdom · 305 km

M4 Accidents Today — Live Corridor Watch

Quick answer: 0 news reports naming the M4 in the last 24 hours, 0 in the last 7 days; 3 official live incidents on or near the road right now; 2 geocoded reports within 12 km. The M4 is the 189-mile motorway from London past Heathrow, Reading, Swindon and Bristol across the Severn to Cardiff and Swansea.

Reports naming the M4

last 24 hours

Last 7 days

headline mentions

Official incidents now

within 12 km of the road

305

Kilometres

9 waypoints · Chiswick (J1) → Pont Abraham (J49)

— zones in view

M4 corridor Accident report · last 24h Official traffic incident Toggle CAMERAS on the map for live views

Headlines

Latest reports naming the M4

News items from the last 7 days whose headline names the road, country-matched. Every item links to the publisher.

No headline has named the M4 in the last 7 days. Live country-wide reports are on the United Kingdom page.

Official feeds

Live incidents on or near the M4 right now

Transport-authority and traffic-data incidents within 12 km of the centreline, nearest first.

Source	Area	Details	km from road
Traffic Wales	Wales	M4 : Eastbound : J28 Tredegar Park to J24 Coldra : Congestion : Delays possible :	2
TfL	London	—	6.4
TfL	London	—	10.2

Geocoded

Accident reports placed within 12 km of the M4 (24 h)

City-level placements from the live feed — the dot marks the city named in the headline, not the exact carriageway.

London · 10.2 km North London married couple died in crash after their car burst into flames - My London 17 hr ago

London · 10.2 km North London married couple died in rash after their car burst into flames - My London 17 hr ago

Official DOT feeds · live snapshots

Live traffic cameras along the M4

Public traffic-camera snapshots nearest to the latest geocoded reports on this page, straight from the transport authority. Images refresh on their own schedule (seconds to minutes); a camera is picked by distance and is not necessarily pointed at the incident.

Traffic camera: A4 Great West Rd/Sutton Crt Rd — **A4 Great West Rd/Sutton Crt Rd**TfL JamCams (London) · 0.3 km from: Chiswick (J1)

Traffic camera: A4 Colnbrook/Stanwell Moor Rd — **A4 Colnbrook/Stanwell Moor Rd**TfL JamCams (London) · 7.3 km from: Slough (J6)

Traffic camera: Airport Way/Stanwellmore Rd — **Airport Way/Stanwellmore Rd**TfL JamCams (London) · 123 km from centre

Traffic camera: Western Ave/Swakeleys RB — **Western Ave/Swakeleys RB**TfL JamCams (London) · 124 km from centre

Traffic camera: A40 Western Ave/Long Lane — **A40 Western Ave/Long Lane**TfL JamCams (London) · 125 km from centre

Traffic camera: A4 West of Sipson Road — **A4 West of Sipson Road**TfL JamCams (London) · 126 km from centre

Traffic camera: Clockhouse Lane/Staines Rd — **Clockhouse Lane/Staines Rd**TfL JamCams (London) · 126 km from centre

Traffic camera: Bath Rd / Oxford Ave — **Bath Rd / Oxford Ave**TfL JamCams (London) · 127 km from centre

Camera data: Powered by TfL Open Data (all 890 cameras). Snapshots are served by the authority and are not stored by this site. Cameras marked Live video play inline; the rest are still images refreshed by the authority.

Historical data

M4 accident history

Recorded injury collisions (DfT STATS19 2021–2025) on this road by year, severity, road user, place and time of day.

Questions

M4 — FAQ

Is there an accident on the M4 today?

No news report naming the M4 has reached our feeds in the last 24 hours. The list below shows the most recent mentions from the last 7 days; official live incidents inside the corridor appear in the table when an authority publishes them.

Where does this M4 page get its data?

Three places, none of them estimated: (1) news headlines from GDELT, Google News RSS and GNews that name the road, country-matched so the British M1 and the Pakistani M-1 are never mixed up; (2) official incident feeds already on this site (511 systems, state DOT ArcGIS layers, city feeds, MapQuest) filtered to points within 12 km of the road's centreline; (3) the live traffic-camera index for cameras nearest to each waypoint.

How is 'near the M4' defined?

The road is stored as 9 waypoints (Chiswick (J1), Slough (J6), Reading (J11), Swindon (J15)…). A report or incident counts as on the corridor when it lies within 12 km of the line between those waypoints. City-level geocoded reports are approximate by nature — they mark the city, not the exact carriageway.

What should I do if I am in a crash on the M4?

Get to a safe place away from live lanes if you can, call 999, and give the direction, junction or mile marker. Do not stand between vehicles or on the hard shoulder longer than necessary. This page is informational and updates every 15 minutes; it is not an emergency service.

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Corridor pages are computed from feeds already on this site (official incidents, news, cameras) — nothing here is estimated. Country context: United Kingdom accidents today.