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CrashStats

HA7 road accidents: crash map and statistics

Police recorded 4,213 road traffic collisions in the HA7 postcode district, Harrow, from 1982 to 2025, and 5,249 people were killed or injured in them. Of those collisions, 47 were fatal and 648 were serious.

In 2025 police recorded 64 collisions, up 39% on 2024 (46).

Collisions since 1982
4,213
807th highest of 2,813 postcode districts
Casualties
5,249
1.25 per collision
Fatal collisions
47
47 people killed
Serious collisions
648
727 seriously injured
Collisions in 2025
64
Up 39% on 2024
Casualties in 2025
83
Up 46% on 2024

Road collision statistics for HA7

Collisions by severity, 1982 to 2025

  • Fatal471.1%
  • Serious64815%
  • Slight3,51884%

What the data shows

  • HA7 had 657 collisions from 2016 to 2025, 6% fewer than the 699 from 2006 to 2015.
  • 16% of collisions in HA7 were fatal or serious, against 20% across Great Britain.
  • 471 children under 16 were killed or injured in HA7, 9.6% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 28% of collisions in HA7.

Where HA7 ranks among 2,813 postcode districts

Most collisions
807th
Most casualties
915th
Most fatal collisions
1,276th
Most serious collisions
1,073rd

Collisions by day of the week

  • Monday568 (13%)
  • Tuesday649 (15%)
  • Wednesday652 (15%)
  • Thursday600 (14%)
  • Friday720 (17%)
  • Saturday561 (13%)
  • Sunday463 (11%)

Light conditions

  • Daylight2,966 (70%)
  • Dark, street lights lit1,199 (28%)
  • Dark, lighting unknown30 (0.7%)
  • Dark, no street lighting9 (0.2%)
  • Dark, street lights unlit9 (0.2%)

Type of road

  • Single carriageway3,364 (80%)
  • Dual carriageway529 (13%)
  • Roundabout191 (4.5%)
  • One way street or slip road83 (2%)
  • Not recorded46 (1.1%)

Speed limit at the scene

  • 20 mph59 (1.4%)
  • 30 mph3,605 (86%)
  • 40 mph446 (11%)
  • 50 mph14 (0.3%)
  • 60 mph24 (0.6%)
  • 70 mph65 (1.5%)

Weather at the time

  • Fine, no high winds3,423 (81%)
  • Raining, no high winds555 (13%)
  • Snowing, no high winds24 (0.6%)
  • Fine with high winds23 (0.5%)
  • Raining with high winds23 (0.5%)
  • Fog or mist21 (0.5%)
  • Snowing with high winds2 (under 0.1%)
  • Other72 (1.7%)
  • Not recorded70 (1.7%)

Who was hurt

  • Car occupant3,250 (62%)
  • Pedestrian836 (16%)
  • Motorcyclist577 (11%)
  • Cyclist293 (5.6%)
  • Van occupant120 (2.3%)
  • Bus or coach occupant109 (2.1%)
  • Taxi or private hire car occupant35 (0.7%)
  • Goods vehicle occupant (over 3.5 tonnes)14 (0.3%)
  • Other vehicle occupant9 (0.2%)
  • Minibus occupant2 (under 0.1%)
  • Other1 (under 0.1%)
  • Not recorded3 (0.1%)

Source: Department for Transport, STATS19 road safety data

HA7 road accidents by year

Collisions and casualties in HA7, 1982 to 2025

Collisions in HA7 peaked at 148 in 1982; 2025 had 64.

  • Collisions
  • Collisions in 2025: 64
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20256483
20244657
20235871
20226477
20215262
20206878
20197689
20186279
20178298
201685112
20157389
20147892
20135066
20127899
20115767
20107696
200988114
20086381
20076686
20067088
2005100123
200482103
200389112
200285120
200197127
2000101134
1999126158
1998112131
1997109139
1996122151
1995104134
1994130161
1993118156
1992112135
1991145179
1990127157
1989134164
1988134152
1987141169
1986138157
1985137159
1984136170
1983130174
1982148200

Map of recent crashes in HA7

Map of the 24 most recent crashes in HA7

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

  • 24 crashes
  • Serious
  • Slight

Recent road crashes in HA7

The 24 most recent collisions in HA7 happened between 1 August and 15 December 2025.

Severity

Crashes by road in HA7

The A4140 has the most collisions in HA7, 1,417 of 4,213 (34%), followed by the A410 (946).

Collisions in HA7 on each road, 1982 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA41401,4171,76024227
2ndA4109461,1398132
3rdA5156218030
4thA409146224029
5thM1669013
6thB461192204
7thA41141604

Council areas covering HA7

Collisions in HA7 were recorded in 4 council areas. Harrow has 3,953 of 4,213 (94%).

Collisions in HA7 by council area, 1982 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stHarrow3,9534,89346610
2ndBarnet231319133
3rdBrent182202
4thHertsmere71101

Towns in HA7

Collisions in HA7 were recorded in 5 towns, led by Harrow (3,623) and Brent (20).