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CrashStats

A4204 accidents: crash map and statistics

Police recorded 711 collisions on the A4204 from 1979 to 2025, with 775 casualties. Of those crashes, 2 were fatal and 102 serious, and 2 people were killed.

In 2025 there were 9 collisions on the A4204, down 44% from 16 in 2024, with 10 casualties.

Collisions since 1979
711
1,484th highest of 4,923 roads
Casualties
775
1.09 per collision
Fatal collisions
2
2 people killed
Serious collisions
102
107 seriously injured
Collisions in 2025
9
Down 44% on 2024
Casualties in 2025
10
Down 50% on 2024

Crash severity on the A4204

On the A4204, 0.3% of collisions were fatal and 14% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal20.3%
  • Serious10214%
  • Slight60785%

Where the A4204 ranks among 4,923 roads

Most collisions
1,484th
Most casualties
1,777th
Most fatal collisions
3,485th
Most serious collisions
1,881st

A4204 accidents by year

Collisions on the A4204 peaked at 31 in 1981 and were down to 9 in 2025.

Collisions and casualties on the A4204, 1979 to 2025

  • Collisions
  • Collisions in 2025: 9
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
2025910
20241620
20231414
20221313
20211617
202067
20191212
201877
201799
201699
201588
201467
2013910
20121111
20111315
201088
20091313
20081617
20071414
20061314
200578
20041415
20031315
200289
20011214
20002022
19992124
19982324
19971920
19961718
19951417
19941520
19931313
19921618
19911214
19901414
19892527
19882729
19871818
19861516
19852021
19842223
19832021
19822123
19813137
19802224
19793036

When crashes happen on the A4204

Thursday has the most collisions on the A4204 (123), and 3pm to 6pm is the busiest time of day (165).

Collisions by day of the week

  • Monday111 (16%)
  • Tuesday114 (16%)
  • Wednesday94 (13%)
  • Thursday123 (17%)
  • Friday108 (15%)
  • Saturday102 (14%)
  • Sunday59 (8.3%)

Collisions by time of day

  • Midnight to 3am30 (4.2%)
  • 3am to 6am15 (2.1%)
  • 6am to 9am58 (8.2%)
  • 9am to noon119 (17%)
  • Noon to 3pm135 (19%)
  • 3pm to 6pm165 (23%)
  • 6pm to 9pm124 (17%)
  • 9pm to midnight65 (9.1%)

Collisions by month

  • January40 (5.6%)
  • February59 (8.3%)
  • March69 (9.7%)
  • April53 (7.5%)
  • May59 (8.3%)
  • June67 (9.4%)
  • July63 (8.9%)
  • August76 (11%)
  • September47 (6.6%)
  • October47 (6.6%)
  • November73 (10%)
  • December58 (8.2%)

Light conditions at the time

  • Daylight496 (70%)
  • Dark, street lights lit209 (29%)
  • Dark, lighting unknown4 (0.6%)
  • Dark, street lights unlit2 (0.3%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4204 crashes

On the A4204, 92% of collisions happened where the speed limit was 30 mph and 81% on a dry road surface.

Speed limit at the scene

  • 20 mph55 (7.7%)
  • 30 mph655 (92%)
  • 40 mph1 (0.1%)

Weather at the time

  • Fine, no high winds545 (77%)
  • Raining, no high winds73 (10%)
  • Raining with high winds2 (0.3%)
  • Fine with high winds1 (0.1%)
  • Other81 (11%)
  • Not recorded9 (1.3%)

Road surface

  • Dry575 (81%)
  • Wet or damp127 (18%)
  • Frost or ice2 (0.3%)
  • Snow1 (0.1%)
  • Not recorded6 (0.8%)

Type of road

  • Single carriageway556 (78%)
  • One way street or slip road54 (7.6%)
  • Dual carriageway40 (5.6%)
  • Roundabout1 (0.1%)
  • Not recorded60 (8.4%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4204 crashes

Pedestrians make up 35% of the people killed or injured on the A4204, followed by motorcyclists (20%).

Casualties by road user

  • Pedestrian272 (35%)
  • Motorcyclist152 (20%)
  • Car occupant135 (17%)
  • Bus or coach occupant101 (13%)
  • Cyclist84 (11%)
  • Taxi or private hire car occupant27 (3.5%)
  • Van occupant2 (0.3%)
  • Other2 (0.3%)

Vehicles involved

  • Car501 (46%)
  • Motorcycle186 (17%)
  • Bus or coach141 (13%)
  • Pedal cycle91 (8.4%)
  • Taxi or private hire car85 (7.9%)
  • Van or goods vehicle up to 3.5 tonnes56 (5.2%)
  • Goods vehicle over 3.5 tonnes11 (1%)
  • Other9 (0.8%)

Casualties by age

  • 0 to 511 (1.4%)
  • 6 to 106 (0.8%)
  • 11 to 1519 (2.5%)
  • 16 to 2068 (8.8%)
  • 21 to 25117 (15%)
  • 26 to 35208 (27%)
  • 36 to 45106 (14%)
  • 46 to 5562 (8%)
  • 56 to 6564 (8.3%)
  • 66 to 7526 (3.4%)
  • Over 7531 (4%)
  • Not recorded57 (7.4%)

Drivers, passengers and pedestrians

  • Driver or rider340 (44%)
  • Pedestrian272 (35%)
  • Passenger163 (21%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4204

Map of the 25 most recent crashes on the A4204

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

  • 25 crashes
  • Serious
  • Slight

A4204 crashes by council area

Collisions on the A4204 were recorded in 2 council areas. Kensington and Chelsea has the most, with 691, followed by Westminster (20).

Collisions on the A4204 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stKensington and Chelsea6917532100
2ndWestminster202202

A4204 crashes by town

Collisions on the A4204 were recorded in 2 towns and built-up areas, led by Kensington and Chelsea (618) and City of Westminster (9).

Recent crashes on the A4204

These are the 25 most recent collisions on the A4204, from 3 January 2024 to 31 August 2025.

Severity