Crash View

M4 road traffic accidents

29,200 collisions recorded
1979 to 2025

The M4 appears in 29,200 collisions in the STATS19 data between 1979 and 2025, involving 46,338 casualties. Of these collisions, 724 were fatal and 4,059 were serious. Recorded collisions in 2025 were up 17% on 2024.

Is the M4 closed right now? See today's accidents, overnight closures and roadworks.

Live M4 closures today
All Severities Fatal Serious Slight
Fatal
724
Serious
4,059
Casualties
46,338
2025 252
2024 216
2023 220
2022 226
2021 238
2020 178
2019 362
2018 355
2017 400
2016 479
2015 525
2014 574
2013 534
2012 493
2011 530
2010 583
2009 538
2008 662
2007 780
2006 844
2005 772
2004 867
2003 876
2002 827
2001 855
2000 864
1999 852
1998 860
1997 835
1996 782
1995 812
1994 761
1993 759
1992 739
1991 730
1990 888
1989 835
1988 763
1987 691
1986 749
1985 639
1984 640
1983 606
1982 553
1981 564
1980 552
1979 540

Hillingdon

1,815 recorded here

Wiltshire

1,801 recorded here

West Berkshire

1,791 recorded here

Slough

1,787 recorded here

South Gloucestershire

1,501 recorded here

Newport

1,382 recorded here

Browse all regions

Hounslow

571 recorded along the M4

Hillingdon

428 recorded along the M4

Newport (Newport)

353 recorded along the M4

Slough

288 recorded along the M4

Port Talbot

205 recorded along the M4

Cardiff

93 recorded along the M4

Browse all towns
Browse All Roads Search All Accidents

Accidents on the M4

Fatal
Serious
Slight
Click markers for details

Move Insights

Thinking of moving to this area?

Check flood risk, planning history, EPC ratings and more with a Move Insights property report.

Flood risk assessment
Planning history
EPC ratings & more
Get a property report

Recent Accidents

Showing 20 of 29,200 accidents

Accident 197943F058019

Slight
2 vehicles 1 casualty
Vehicle Vehicle
View Details

Accident 197901ATPE254

Slight
2 vehicles 1 casualty
Vehicle Vehicle
View Details

Accident 197901ARAA261

Slight
2 vehicles 2 casualties
Vehicle Vehicle
View Details

Accident 197943C113019

Serious
2 vehicles 1 casualty
Vehicle Vehicle
View Details

Accident 197943E081019

Slight
1 vehicle 1 casualty
Vehicle
View Details

Accident 197901AQHA250

Slight
3 vehicles 2 casualties
Van / Goods 3.5 tonnes mgw or under Vehicle Vehicle
View Details

Accident 197954MA00369

Serious
5 vehicles 5 casualties
Vehicle Vehicle Vehicle Vehicle Vehicle
View Details

Accident 197901APKJ258

Slight
2 vehicles 1 casualty
Vehicle Vehicle
View Details

Accident 197943C092019

Serious
4 vehicles 3 casualties
Vehicle Vehicle Vehicle Vehicle
View Details

Accident 197901ANGI258

Slight
1 vehicle 1 casualty
Vehicle
View Details

Accident 197954MA00359

Fatal
1 vehicle 1 casualty
Vehicle
View Details

Accident 1979620B00450

Slight
2 vehicles 2 casualties
Vehicle Vehicle
View Details

Accident 197943F043019

Fatal
4 vehicles 2 casualties
Vehicle Vehicle Vehicle Vehicle
View Details

Accident 197943E060019

Slight
1 vehicle 1 casualty
Van / Goods 3.5 tonnes mgw or under
View Details

Accident 197901AJRD251

Slight
1 vehicle 1 casualty
Vehicle
View Details

Accident 197901AJNC257

Slight
3 vehicles 1 casualty
Van / Goods 3.5 tonnes mgw or under Vehicle Vehicle
View Details

Accident 197943C136019

Serious
3 vehicles 3 casualties
Vehicle Vehicle Vehicle
View Details

Accident 197943E050019

Serious
2 vehicles 1 casualty
Van / Goods 3.5 tonnes mgw or under Vehicle
View Details

Accident 197954MA00199

Slight
2 vehicles 1 casualty
Vehicle Van / Goods 3.5 tonnes mgw or under
View Details

Accident 197954MB00189

Serious
5 vehicles 2 casualties
Vehicle Vehicle Vehicle Vehicle Vehicle
View Details