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CrashStats

SW1Y road accidents: crash map and statistics

Police recorded 2,294 road traffic collisions in the SW1Y postcode district, Westminster, from 1982 to 2025, and 2,563 people were killed or injured in them. Of those collisions, 11 were fatal and 358 were serious.

In 2025 police recorded 19 collisions, down 17% on 2024 (23).

Collisions since 1982
2,294
1,612th of 2,813 postcode districts, highest first
Casualties
2,563
1.12 per collision
Fatal collisions
11
11 people killed
Serious collisions
358
369 seriously injured
Collisions in 2025
19
Down 17% on 2024
Casualties in 2025
20
Down 20% on 2024

Road collision statistics for SW1Y

Collisions by severity, 1982 to 2025

  • Fatal110.5%
  • Serious35816%
  • Slight1,92584%

What the data shows

  • SW1Y had 278 collisions from 2016 to 2025, 21% fewer than the 353 from 2006 to 2015.
  • 16% of collisions in SW1Y were fatal or serious, against 20% across Great Britain.
  • 58 children under 16 were killed or injured in SW1Y, 2.5% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 19% of collisions in SW1Y.

Where SW1Y ranks among 2,813 postcode districts

Most collisions
1,612th
Most casualties
1,823rd
Most fatal collisions
2,396th
Most serious collisions
1,882nd

Collisions by day of the week

  • Monday293 (13%)
  • Tuesday358 (16%)
  • Wednesday346 (15%)
  • Thursday396 (17%)
  • Friday400 (17%)
  • Saturday304 (13%)
  • Sunday197 (8.6%)

Light conditions

  • Daylight1,449 (63%)
  • Dark, street lights lit818 (36%)
  • Dark, lighting unknown14 (0.6%)
  • Dark, street lights unlit11 (0.5%)
  • Dark, no street lighting2 (0.1%)

Type of road

  • One way street or slip road1,429 (62%)
  • Single carriageway721 (31%)
  • Dual carriageway99 (4.3%)
  • Roundabout13 (0.6%)
  • Not recorded32 (1.4%)

Speed limit at the scene

  • 20 mph126 (5.5%)
  • 30 mph2,166 (94%)
  • 40 mph1 (under 0.1%)
  • 50 mph1 (under 0.1%)

Weather at the time

  • Fine, no high winds1,969 (86%)
  • Raining, no high winds224 (9.8%)
  • Fine with high winds21 (0.9%)
  • Raining with high winds10 (0.4%)
  • Snowing, no high winds7 (0.3%)
  • Fog or mist2 (0.1%)
  • Snowing with high winds1 (under 0.1%)
  • Other31 (1.4%)
  • Not recorded29 (1.3%)

Who was hurt

  • Pedestrian922 (36%)
  • Motorcyclist507 (20%)
  • Car occupant348 (14%)
  • Cyclist327 (13%)
  • Bus or coach occupant255 (9.9%)
  • Taxi or private hire car occupant162 (6.3%)
  • Van occupant31 (1.2%)
  • Goods vehicle occupant (over 3.5 tonnes)5 (0.2%)
  • Other vehicle occupant3 (0.1%)
  • Horse rider1 (under 0.1%)
  • Other1 (under 0.1%)
  • Not recorded1 (under 0.1%)

Source: Department for Transport, STATS19 road safety data

SW1Y road accidents by year

Collisions and casualties in SW1Y, 1982 to 2025

Collisions in SW1Y peaked at 87 in 2000; 2025 had 19.

  • Collisions
  • Collisions in 2025: 19
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20251920
20242325
20231818
20222834
20212529
20201314
20193233
20184246
20174859
20163036
20154049
20144154
20133338
20123539
20114652
20103942
20092629
20083032
20072833
20063544
20054048
20045863
20035051
20025359
20017783
200087103
19997181
19987790
19978190
19967890
19957081
19947585
19935055
19925863
19915660
19907477
19898593
19887479
19877680
19866878
19857479
19848486
19836369
19828494

Map of recent crashes in SW1Y

Map of the 24 most recent crashes in SW1Y

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 SW1Y

The 24 most recent collisions in SW1Y happened between 18 November 2024 and 22 December 2025.

Severity

Crashes by road in SW1Y

The A4 has the most collisions in SW1Y, 1,725 of 2,294 (75%), followed by the B309 (30).

Collisions in SW1Y on each road, 1982 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA41,7251,9278276
2ndB309303103
3rdA42013300

Council area for SW1Y

SW1Y is in Westminster, where police recorded 101,118 collisions from 1979 to 2025. SW1Y accounts for 2.3% of them.

Town in SW1Y

All 2,294 collisions in SW1Y were in City of Westminster.