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CrashStats

W4 road accidents: crash map and statistics

Police recorded 7,401 road traffic collisions in the W4 postcode district, Hounslow, from 1982 to 2025, and 8,661 people were killed or injured in them. Of those collisions, 64 were fatal and 1,044 were serious.

In 2025 police recorded 105 collisions, up 8% on 2024 (97).

Collisions since 1982
7,401
157th highest of 2,813 postcode districts
Casualties
8,661
1.17 per collision
Fatal collisions
64
66 people killed
Serious collisions
1,044
1,122 seriously injured
Collisions in 2025
105
Up 8% on 2024
Casualties in 2025
114
Level with 2024

Road collision statistics for W4

Collisions by severity, 1982 to 2025

  • Fatal640.9%
  • Serious1,04414%
  • Slight6,29385%

What the data shows

  • W4 had 1,122 collisions from 2016 to 2025, 17% fewer than the 1,356 from 2006 to 2015.
  • 15% of collisions in W4 were fatal or serious, against 20% across Great Britain.
  • 537 children under 16 were killed or injured in W4, 6.6% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 22% of collisions in W4.

Where W4 ranks among 2,813 postcode districts

Most collisions
157th
Most casualties
246th
Most fatal collisions
819th
Most serious collisions
342nd

Collisions by day of the week

  • Monday1,032 (14%)
  • Tuesday1,116 (15%)
  • Wednesday1,129 (15%)
  • Thursday1,189 (16%)
  • Friday1,261 (17%)
  • Saturday918 (12%)
  • Sunday756 (10%)

Light conditions

  • Daylight5,297 (72%)
  • Dark, street lights lit1,949 (26%)
  • Dark, lighting unknown102 (1.4%)
  • Dark, street lights unlit46 (0.6%)
  • Dark, no street lighting7 (0.1%)

Type of road

  • Single carriageway4,724 (64%)
  • Dual carriageway1,627 (22%)
  • Roundabout833 (11%)
  • One way street or slip road156 (2.1%)
  • Not recorded61 (0.8%)

Speed limit at the scene

  • 20 mph380 (5.1%)
  • 30 mph5,392 (73%)
  • 40 mph1,479 (20%)
  • 50 mph90 (1.2%)
  • 60 mph11 (0.1%)
  • 70 mph48 (0.6%)
  • Not recorded1 (under 0.1%)

Weather at the time

  • Fine, no high winds6,143 (83%)
  • Raining, no high winds857 (12%)
  • Fine with high winds44 (0.6%)
  • Raining with high winds39 (0.5%)
  • Snowing, no high winds16 (0.2%)
  • Fog or mist11 (0.1%)
  • Snowing with high winds3 (under 0.1%)
  • Other96 (1.3%)
  • Not recorded192 (2.6%)

Who was hurt

  • Car occupant3,559 (41%)
  • Motorcyclist1,861 (21%)
  • Pedestrian1,240 (14%)
  • Cyclist1,117 (13%)
  • Bus or coach occupant400 (4.6%)
  • Taxi or private hire car occupant185 (2.1%)
  • Van occupant178 (2.1%)
  • Minibus occupant60 (0.7%)
  • Goods vehicle occupant (over 3.5 tonnes)30 (0.3%)
  • Other vehicle occupant20 (0.2%)
  • Other2 (under 0.1%)
  • Not recorded9 (0.1%)

Source: Department for Transport, STATS19 road safety data

W4 road accidents by year

Collisions and casualties in W4, 1982 to 2025

Collisions in W4 peaked at 285 in 1984; 2025 had 105.

  • Collisions
  • Collisions in 2025: 105
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025105114
202497114
202396109
2022117146
2021108118
202085100
2019109120
2018120135
2017145170
2016140158
2015133150
2014165183
2013152169
2012127145
2011138179
2010143171
2009127144
2008126142
2007119151
2006126153
2005118145
2004149175
2003169206
2002203249
2001194236
2000189212
1999142162
1998193235
1997226276
1996218260
1995194225
1994223263
1993220252
1992199230
1991210233
1990249288
1989229259
1988200234
1987193216
1986230279
1985221269
1984285338
1983229260
1982240288

Map of recent crashes in W4

Map of the 24 most recent crashes in W4

Use the arrow keys to move the map and the plus and minus keys to zoom.

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in W4

The 24 most recent collisions in W4 happened between 14 October and 26 December 2025.

Severity

Crashes by road in W4

The A315 has the most collisions in W4, 2,184 of 7,401 (30%), followed by the A4 (1,624).

Collisions in W4 on each road, 1982 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA3152,1842,42721285
2ndA41,6242,02515202
3rdA3167589297137
4thA3000277319539
5thB491257285237
6thB409253289553
7thA406240308129
8thB490214236132
9thA205199248020
10thM410913608
11thA402212203

Council areas covering W4

Collisions in W4 were recorded in 5 council areas. Hounslow has 6,691 of 7,401 (90%).

Collisions in W4 by council area, 1982 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stHounslow6,6917,85157919
2ndEaling6026886109
3rdHammersmith and Fulham96107113
4thHillingdon4401
5thRichmond upon Thames3401

Towns in W4

Collisions in W4 were recorded in 3 towns, led by Hounslow (6,454) and Ealing (534).