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CrashStats

HA3 road accidents: crash map and statistics

Police recorded 8,906 road traffic collisions in the HA3 postcode district, Harrow, from 1982 to 2025, and 10,846 people were killed or injured in them. Of those collisions, 62 were fatal and 1,278 were serious.

In 2025 police recorded 140 collisions, up 9% on 2024 (128).

Collisions since 1982
8,906
84th highest of 2,813 postcode districts
Casualties
10,846
1.22 per collision
Fatal collisions
62
63 people killed
Serious collisions
1,278
1,420 seriously injured
Collisions in 2025
140
Up 9% on 2024
Casualties in 2025
155
Up 3% on 2024

Road collision statistics for HA3

Collisions by severity, 1982 to 2025

  • Fatal620.7%
  • Serious1,27814%
  • Slight7,56685%

What the data shows

  • HA3 had 1,376 collisions from 2016 to 2025, 3% fewer than the 1,414 from 2006 to 2015.
  • 15% of collisions in HA3 were fatal or serious, against 20% across Great Britain.
  • 1,335 children under 16 were killed or injured in HA3, 13% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 27% of collisions in HA3.

Where HA3 ranks among 2,813 postcode districts

Most collisions
84th
Most casualties
105th
Most fatal collisions
879th
Most serious collisions
169th

Collisions by day of the week

  • Monday1,239 (14%)
  • Tuesday1,285 (14%)
  • Wednesday1,280 (14%)
  • Thursday1,316 (15%)
  • Friday1,459 (16%)
  • Saturday1,270 (14%)
  • Sunday1,057 (12%)

Light conditions

  • Daylight6,241 (70%)
  • Dark, street lights lit2,540 (29%)
  • Dark, lighting unknown81 (0.9%)
  • Dark, street lights unlit24 (0.3%)
  • Dark, no street lighting20 (0.2%)

Type of road

  • Single carriageway7,400 (83%)
  • Roundabout642 (7.2%)
  • Dual carriageway634 (7.1%)
  • One way street or slip road120 (1.3%)
  • Not recorded110 (1.2%)

Speed limit at the scene

  • 10 mph1 (under 0.1%)
  • 20 mph213 (2.4%)
  • 30 mph8,534 (96%)
  • 40 mph144 (1.6%)
  • 50 mph4 (under 0.1%)
  • 60 mph8 (0.1%)
  • 70 mph1 (under 0.1%)
  • Not recorded1 (under 0.1%)

Weather at the time

  • Fine, no high winds7,230 (81%)
  • Raining, no high winds1,209 (14%)
  • Fine with high winds75 (0.8%)
  • Raining with high winds37 (0.4%)
  • Fog or mist30 (0.3%)
  • Snowing, no high winds26 (0.3%)
  • Snowing with high winds4 (under 0.1%)
  • Other126 (1.4%)
  • Not recorded169 (1.9%)

Who was hurt

  • Car occupant6,090 (56%)
  • Pedestrian2,140 (20%)
  • Motorcyclist1,178 (11%)
  • Cyclist733 (6.8%)
  • Bus or coach occupant415 (3.8%)
  • Van occupant170 (1.6%)
  • Taxi or private hire car occupant64 (0.6%)
  • Other vehicle occupant30 (0.3%)
  • Goods vehicle occupant (over 3.5 tonnes)13 (0.1%)
  • Minibus occupant6 (0.1%)
  • Other3 (under 0.1%)
  • Not recorded4 (under 0.1%)

Source: Department for Transport, STATS19 road safety data

HA3 road accidents by year

Collisions and casualties in HA3, 1982 to 2025

Collisions in HA3 peaked at 317 in 1989; 2025 had 140.

  • Collisions
  • Collisions in 2025: 140
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025140155
2024128150
2023127142
2022146169
2021124145
2020127144
2019142168
2018146171
2017160198
2016136168
2015152195
2014173209
2013146187
2012144181
2011119147
2010132164
2009138171
2008127163
2007122159
2006161204
2005184222
2004203248
2003208270
2002202261
2001236289
2000230280
1999253327
1998231267
1997265330
1996250308
1995271328
1994268325
1993269320
1992258312
1991249318
1990316386
1989317392
1988256312
1987256308
1986279306
1985240290
1984305373
1983285338
1982285346

Map of recent crashes in HA3

Map of the 24 most recent crashes in HA3

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in HA3

The 24 most recent collisions in HA3 happened between 24 October and 31 December 2025.

Severity

Crashes by road in HA3

The A4006 has the most collisions in HA3, 1,993 of 8,906 (22%), followed by the A409 (1,373).

Collisions in HA3 on each road, 1982 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA40061,9932,52013292
2ndA4091,3731,67214218
3rdA410493612157
4thA4008496706
5thB459424719
6thA4140262703

Council areas covering HA3

Collisions in HA3 were recorded in 2 council areas. Harrow has 5,905 of 8,906 (66%).

Collisions in HA3 by council area, 1982 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stHarrow5,9057,12841854
2ndBrent2,9973,71421424

Towns in HA3

Collisions in HA3 were recorded in 2 towns, led by Harrow (6,994) and Brent (1,141).