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CrashStats

A4207 accidents: crash map and statistics

Police recorded 830 collisions on the A4207 from 1979 to 2025, with 907 casualties. Of those crashes, 6 were fatal and 150 serious, and 8 people were killed.

In 2025 there were 8 collisions on the A4207, down 11% from 9 in 2024, with 8 casualties.

Collisions since 1979
830
1,282nd highest of 4,923 roads
Casualties
907
1.09 per collision
Fatal collisions
6
8 people killed
Serious collisions
150
153 seriously injured
Collisions in 2025
8
Down 11% on 2024
Casualties in 2025
8
Down 11% on 2024

Crash severity on the A4207

On the A4207, 0.7% of collisions were fatal and 18% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal60.7%
  • Serious15018%
  • Slight67481%

Where the A4207 ranks among 4,923 roads

Most collisions
1,282nd
Most casualties
1,546th
Most fatal collisions
2,299th
Most serious collisions
1,382nd

A4207 accidents by year

Collisions on the A4207 peaked at 35 in 1983 and were down to 8 in 2025.

Collisions and casualties on the A4207, 1979 to 2025

  • Collisions
  • Collisions in 2025: 8
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202588
202499
20232424
20221515
20211012
20201616
20191920
20181618
201777
20161216
20151415
20141415
20131617
201299
201167
2010911
200977
20081415
20071416
200688
200579
20042021
20031518
20021818
20011921
20001011
19991618
19981113
19972123
19961617
19951921
19941717
19932526
19921516
19912222
19902425
19893242
19882326
19872935
19863134
19852729
19843335
19833538
19823034
19812022
19802223
19792628

When crashes happen on the A4207

Friday has the most collisions on the A4207 (141), and 3pm to 6pm is the busiest time of day (202).

Collisions by day of the week

  • Monday119 (14%)
  • Tuesday110 (13%)
  • Wednesday122 (15%)
  • Thursday122 (15%)
  • Friday141 (17%)
  • Saturday113 (14%)
  • Sunday103 (12%)

Collisions by time of day

  • Midnight to 3am42 (5.1%)
  • 3am to 6am15 (1.8%)
  • 6am to 9am72 (8.7%)
  • 9am to noon86 (10%)
  • Noon to 3pm151 (18%)
  • 3pm to 6pm202 (24%)
  • 6pm to 9pm146 (18%)
  • 9pm to midnight116 (14%)

Collisions by month

  • January70 (8.4%)
  • February61 (7.3%)
  • March68 (8.2%)
  • April70 (8.4%)
  • May69 (8.3%)
  • June55 (6.6%)
  • July78 (9.4%)
  • August68 (8.2%)
  • September74 (8.9%)
  • October78 (9.4%)
  • November73 (8.8%)
  • December66 (8%)

Light conditions at the time

  • Daylight538 (65%)
  • Dark, street lights lit279 (34%)
  • Dark, lighting unknown8 (1%)
  • Dark, street lights unlit3 (0.4%)
  • Dark, no street lighting2 (0.2%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A4207 crashes

On the A4207, 92% of collisions happened where the speed limit was 30 mph and 78% on a dry road surface.

Speed limit at the scene

  • 20 mph65 (7.8%)
  • 30 mph760 (92%)
  • 40 mph3 (0.4%)
  • 70 mph2 (0.2%)

Weather at the time

  • Fine, no high winds622 (75%)
  • Raining, no high winds103 (12%)
  • Fine with high winds13 (1.6%)
  • Raining with high winds4 (0.5%)
  • Other75 (9%)
  • Not recorded13 (1.6%)

Road surface

  • Dry651 (78%)
  • Wet or damp172 (21%)
  • Snow3 (0.4%)
  • Frost or ice1 (0.1%)
  • Not recorded3 (0.4%)

Type of road

  • Single carriageway715 (86%)
  • Dual carriageway43 (5.2%)
  • Roundabout12 (1.4%)
  • One way street or slip road9 (1.1%)
  • Not recorded51 (6.1%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A4207 crashes

Pedestrians make up 33% of the people killed or injured on the A4207, followed by cyclists (19%).

Casualties by road user

  • Pedestrian299 (33%)
  • Cyclist169 (19%)
  • Motorcyclist161 (18%)
  • Car occupant151 (17%)
  • Bus or coach occupant102 (11%)
  • Taxi or private hire car occupant13 (1.4%)
  • Other11 (1.2%)
  • Not recorded1 (0.1%)

Vehicles involved

  • Car651 (51%)
  • Motorcycle181 (14%)
  • Pedal cycle176 (14%)
  • Bus or coach137 (11%)
  • Van or goods vehicle up to 3.5 tonnes62 (4.8%)
  • Taxi or private hire car45 (3.5%)
  • Goods vehicle over 3.5 tonnes17 (1.3%)
  • Other14 (1.1%)

Casualties by age

  • 0 to 528 (3.1%)
  • 6 to 1020 (2.2%)
  • 11 to 1540 (4.4%)
  • 16 to 2066 (7.3%)
  • 21 to 25130 (14%)
  • 26 to 35244 (27%)
  • 36 to 45124 (14%)
  • 46 to 5586 (9.5%)
  • 56 to 6566 (7.3%)
  • 66 to 7532 (3.5%)
  • Over 7517 (1.9%)
  • Not recorded54 (6%)

Drivers, passengers and pedestrians

  • Driver or rider431 (48%)
  • Pedestrian299 (33%)
  • Passenger177 (20%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A4207

Map of the 25 most recent crashes on the A4207

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

  • 25 crashes
  • Serious
  • Slight

A4207 crashes by council area

Collisions on the A4207 were recorded in 3 council areas. Westminster has the most, with 819, followed by Carmarthenshire (4) and Kensington and Chelsea (4).

Collisions on the A4207 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stWestminster8198956147
2ndCarmarthenshire4402
3rdKensington and Chelsea4500

A4207 crashes by town

Collisions on the A4207 were recorded in 2 towns and built-up areas, led by City of Westminster (740) and Carmarthen (4).

Recent crashes on the A4207

These are the 25 most recent collisions on the A4207, from 7 July 2023 to 21 December 2025.

Severity