Skip to main content
CrashStats

HA1 road accidents: crash map and statistics

Police recorded 5,749 road traffic collisions in the HA1 postcode district, Harrow, from 1982 to 2025, and 6,929 people were killed or injured in them. Of those collisions, 40 were fatal and 817 were serious.

In 2025 police recorded 78 collisions, down 17% on 2024 (94).

Collisions since 1982
5,749
374th highest of 2,813 postcode districts
Casualties
6,929
1.21 per collision
Fatal collisions
40
42 people killed
Serious collisions
817
897 seriously injured
Collisions in 2025
78
Down 17% on 2024
Casualties in 2025
92
Down 20% on 2024

Road collision statistics for HA1

Collisions by severity, 1982 to 2025

  • Fatal400.7%
  • Serious81714%
  • Slight4,89285%

What the data shows

  • HA1 had 961 collisions from 2016 to 2025, 4% more than the 921 from 2006 to 2015.
  • 15% of collisions in HA1 were fatal or serious, against 20% across Great Britain.
  • 596 children under 16 were killed or injured in HA1, 9.2% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 24% of collisions in HA1.

Where HA1 ranks among 2,813 postcode districts

Most collisions
374th
Most casualties
494th
Most fatal collisions
1,503rd
Most serious collisions
696th

Collisions by day of the week

  • Monday832 (14%)
  • Tuesday850 (15%)
  • Wednesday848 (15%)
  • Thursday900 (16%)
  • Friday916 (16%)
  • Saturday830 (14%)
  • Sunday573 (10%)

Light conditions

  • Daylight4,040 (70%)
  • Dark, street lights lit1,627 (28%)
  • Dark, lighting unknown56 (1%)
  • Dark, street lights unlit16 (0.3%)
  • Dark, no street lighting10 (0.2%)

Type of road

  • Single carriageway4,486 (78%)
  • Dual carriageway436 (7.6%)
  • Roundabout390 (6.8%)
  • One way street or slip road351 (6.1%)
  • Not recorded86 (1.5%)

Speed limit at the scene

  • 10 mph1 (under 0.1%)
  • 20 mph155 (2.7%)
  • 30 mph5,412 (94%)
  • 40 mph164 (2.9%)
  • 50 mph2 (under 0.1%)
  • 60 mph4 (0.1%)
  • 70 mph8 (0.1%)
  • Not recorded3 (0.1%)

Weather at the time

  • Fine, no high winds4,746 (83%)
  • Raining, no high winds716 (12%)
  • Fine with high winds42 (0.7%)
  • Raining with high winds34 (0.6%)
  • Snowing, no high winds21 (0.4%)
  • Fog or mist15 (0.3%)
  • Snowing with high winds3 (0.1%)
  • Other79 (1.4%)
  • Not recorded93 (1.6%)

Who was hurt

  • Car occupant3,641 (53%)
  • Pedestrian1,339 (19%)
  • Motorcyclist932 (13%)
  • Cyclist421 (6.1%)
  • Bus or coach occupant364 (5.3%)
  • Van occupant140 (2%)
  • Taxi or private hire car occupant54 (0.8%)
  • Other vehicle occupant14 (0.2%)
  • Goods vehicle occupant (over 3.5 tonnes)11 (0.2%)
  • Minibus occupant6 (0.1%)
  • Other3 (under 0.1%)
  • Not recorded4 (0.1%)

Source: Department for Transport, STATS19 road safety data

HA1 road accidents by year

Collisions and casualties in HA1, 1982 to 2025

Collisions in HA1 peaked at 211 in 1982; 2025 had 78.

  • Collisions
  • Collisions in 2025: 78
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20257892
202494115
2023107127
202297118
202192106
20208591
2019110121
2018103130
201796114
201699124
201591121
2014109131
20137185
201290114
2011110123
201094120
200988117
20088797
200792116
200689109
200599125
2004142163
2003125153
2002129162
2001175219
2000148189
1999185218
1998175212
1997179228
1996148178
1995145174
1994169194
1993168197
1992158192
1991151180
1990165200
1989158193
1988174205
1987152169
1986151171
1985162210
1984193224
1983205236
1982211266

Map of recent crashes in HA1

Map of the 24 most recent crashes in HA1

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

  • 24 crashes
  • Fatal
  • Serious
  • Slight

Recent road crashes in HA1

The 24 most recent collisions in HA1 happened between 4 September and 31 December 2025.

Severity

Crashes by road in HA1

The A404 has the most collisions in HA1, 1,461 of 5,749 (25%), followed by the A409 (1,003).

Collisions in HA1 on each road, 1982 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA4041,4611,79712204
2ndA4091,0031,2105143
3rdA4127360428544
4thA4005333422252
5thA312231278230
6thB457207242131
7thB458170196226
8thA4006718602

Council areas covering HA1

Collisions in HA1 were recorded in 3 council areas. Harrow has 4,836 of 5,749 (84%).

Collisions in HA1 by council area, 1982 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stHarrow4,8365,79033694
2ndBrent9081,1347121
3rdEaling5502

Towns in HA1

Collisions in HA1 were recorded in 2 towns, led by Harrow (5,076) and Brent (273).