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CrashStats

A4201 accidents: crash map and statistics

Police recorded 4,248 collisions on the A4201 from 1979 to 2025, with 4,771 casualties. Of those crashes, 12 were fatal and 592 serious, and 12 people were killed.

In 2025 there were 35 collisions on the A4201, down 8% from 38 in 2024, with 41 casualties.

Collisions since 1979
4,248
252nd highest of 4,923 roads
Casualties
4,771
1.12 per collision
Fatal collisions
12
12 people killed
Serious collisions
592
617 seriously injured
Collisions in 2025
35
Down 8% on 2024
Casualties in 2025
41
Up 5% on 2024

Crash severity on the A4201

On the A4201, 0.3% of collisions were fatal and 14% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal120.3%
  • Serious59214%
  • Slight3,64486%

Where the A4201 ranks among 4,923 roads

Most collisions
252nd
Most casualties
323rd
Most fatal collisions
1,505th
Most serious collisions
342nd

A4201 accidents by year

Collisions on the A4201 peaked at 163 in 1984 and were down to 35 in 2025.

Collisions and casualties on the A4201, 1979 to 2025

  • Collisions
  • Collisions in 2025: 35
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20253541
20243839
20234653
20224046
20214650
20203438
20196573
20184654
20176372
20166575
20155969
20145156
20136268
20126776
20116871
20106063
20096768
20086466
20076272
20065871
20058090
200495105
2003111124
20027596
2001116138
2000105122
199999109
1998132146
1997109124
1996115125
1995108112
19948292
19937585
199287102
1991116133
1990126138
1989127143
1988129147
1987120131
1986149169
1985152170
1984163181
1983162184
1982131142
1981112123
1980143159
1979133160

When crashes happen on the A4201

Friday has the most collisions on the A4201 (782), and 3pm to 6pm is the busiest time of day (957).

Collisions by day of the week

  • Monday596 (14%)
  • Tuesday655 (15%)
  • Wednesday691 (16%)
  • Thursday694 (16%)
  • Friday782 (18%)
  • Saturday505 (12%)
  • Sunday325 (7.7%)

Collisions by time of day

  • Midnight to 3am270 (6.4%)
  • 3am to 6am134 (3.2%)
  • 6am to 9am287 (6.8%)
  • 9am to noon695 (16%)
  • Noon to 3pm906 (21%)
  • 3pm to 6pm957 (23%)
  • 6pm to 9pm597 (14%)
  • 9pm to midnight402 (9.5%)

Collisions by month

  • January309 (7.3%)
  • February292 (6.9%)
  • March364 (8.6%)
  • April340 (8%)
  • May351 (8.3%)
  • June338 (8%)
  • July397 (9.3%)
  • August357 (8.4%)
  • September361 (8.5%)
  • October421 (9.9%)
  • November370 (8.7%)
  • December348 (8.2%)

Light conditions at the time

  • Daylight2,947 (69%)
  • Dark, street lights lit1,265 (30%)
  • Dark, lighting unknown24 (0.6%)
  • Dark, street lights unlit8 (0.2%)
  • Dark, no street lighting4 (0.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4201 crashes

On the A4201, 94% of collisions happened where the speed limit was 30 mph and 81% on a dry road surface.

Speed limit at the scene

  • 20 mph242 (5.7%)
  • 30 mph3,997 (94%)
  • 40 mph2 (under 0.1%)
  • 50 mph2 (under 0.1%)
  • 60 mph1 (under 0.1%)
  • 70 mph2 (under 0.1%)
  • Not recorded2 (under 0.1%)

Weather at the time

  • Fine, no high winds3,314 (78%)
  • Raining, no high winds440 (10%)
  • Fine with high winds27 (0.6%)
  • Snowing, no high winds14 (0.3%)
  • Other382 (9%)
  • Not recorded71 (1.7%)

Road surface

  • Dry3,439 (81%)
  • Wet or damp774 (18%)
  • Frost or ice8 (0.2%)
  • Snow6 (0.1%)
  • Flood over 3cm deep1 (under 0.1%)
  • Not recorded20 (0.5%)

Type of road

  • Single carriageway2,743 (65%)
  • Dual carriageway788 (19%)
  • One way street or slip road505 (12%)
  • Roundabout11 (0.3%)
  • Not recorded201 (4.7%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4201 crashes

Pedestrians make up 32% of the people killed or injured on the A4201, followed by motorcyclists (21%).

Casualties by road user

  • Pedestrian1,508 (32%)
  • Motorcyclist1,020 (21%)
  • Car occupant796 (17%)
  • Cyclist614 (13%)
  • Bus or coach occupant557 (12%)
  • Taxi or private hire car occupant183 (3.8%)
  • Other92 (1.9%)
  • Not recorded1 (under 0.1%)

Vehicles involved

  • Car2,696 (41%)
  • Motorcycle1,311 (20%)
  • Bus or coach786 (12%)
  • Pedal cycle667 (10%)
  • Taxi or private hire car576 (8.7%)
  • Van or goods vehicle up to 3.5 tonnes437 (6.6%)
  • Other169 (2.5%)
  • Not recorded1 (under 0.1%)

Casualties by age

  • 0 to 544 (0.9%)
  • 6 to 1042 (0.9%)
  • 11 to 1585 (1.8%)
  • 16 to 20419 (8.8%)
  • 21 to 25797 (17%)
  • 26 to 351,253 (26%)
  • 36 to 45674 (14%)
  • 46 to 55408 (8.6%)
  • 56 to 65330 (6.9%)
  • 66 to 75177 (3.7%)
  • Over 7594 (2%)
  • Not recorded448 (9.4%)

Drivers, passengers and pedestrians

  • Driver or rider2,214 (46%)
  • Pedestrian1,508 (32%)
  • Passenger1,049 (22%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4201

Map of the 25 most recent crashes on the A4201

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

  • 25 crashes
  • Fatal
  • Serious
  • Slight

A4201 crashes by council area

Collisions on the A4201 were recorded in 2 council areas. Westminster has the most, with 3,406, followed by Camden (840).

Collisions on the A4201 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stWestminster3,4063,8029473
2ndCamden8409673119

A4201 crashes by town

Collisions on the A4201 were recorded in 2 towns and built-up areas, led by City of Westminster (3,019) and Camden (763).

Recent crashes on the A4201

These are the 25 most recent collisions on the A4201, from 26 April to 23 November 2025.

Severity