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CrashStats

B304 accidents: crash map and statistics

Police recorded 423 collisions on the B304 from 1979 to 2025, with 465 casualties. Of those crashes, 2 were fatal and 67 serious, and 2 people were killed.

In 2025 there were 5 collisions on the B304, up 25% from 4 in 2024, with 6 casualties.

Collisions since 1979
423
2,208th highest of 4,923 roads
Casualties
465
1.10 per collision
Fatal collisions
2
2 people killed
Serious collisions
67
69 seriously injured
Collisions in 2025
5
Up 25% on 2024
Casualties in 2025
6
Up 50% on 2024

Crash severity on the B304

On the B304, 0.5% of collisions were fatal and 16% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal20.5%
  • Serious6716%
  • Slight35484%

Where the B304 ranks among 4,923 roads

Most collisions
2,208th
Most casualties
2,506th
Most fatal collisions
3,485th
Most serious collisions
2,538th

B304 accidents by year

Collisions on the B304 peaked at 21 in 1989 and were down to 5 in 2025.

Collisions and casualties on the B304, 1979 to 2025

  • Collisions
  • Collisions in 2025: 5
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202556
202444
202388
202266
202178
202044
20191111
201889
201766
201699
201577
2014916
201334
201244
201168
201022
200966
20081013
20071012
200645
20051112
200455
200345
200289
200177
20001616
19991315
199878
19971314
19961111
19951620
199433
199377
199299
19911214
19901011
19892121
19882020
198789
198612
19851414
19841415
19831719
198299
19811114
19801111
19791617

When crashes happen on the B304

Thursday has the most collisions on the B304 (81), and 3pm to 6pm is the busiest time of day (102).

Collisions by day of the week

  • Monday72 (17%)
  • Tuesday67 (16%)
  • Wednesday71 (17%)
  • Thursday81 (19%)
  • Friday64 (15%)
  • Saturday39 (9.2%)
  • Sunday29 (6.9%)

Collisions by time of day

  • Midnight to 3am15 (3.5%)
  • 3am to 6am2 (0.5%)
  • 6am to 9am28 (6.6%)
  • 9am to noon63 (15%)
  • Noon to 3pm84 (20%)
  • 3pm to 6pm102 (24%)
  • 6pm to 9pm91 (22%)
  • 9pm to midnight38 (9%)

Collisions by month

  • January29 (6.9%)
  • February24 (5.7%)
  • March41 (9.7%)
  • April31 (7.3%)
  • May31 (7.3%)
  • June37 (8.7%)
  • July37 (8.7%)
  • August36 (8.5%)
  • September36 (8.5%)
  • October48 (11%)
  • November37 (8.7%)
  • December36 (8.5%)

Light conditions at the time

  • Daylight301 (71%)
  • Dark, street lights lit120 (28%)
  • Dark, lighting unknown2 (0.5%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B304 crashes

On the B304, 92% of collisions happened where the speed limit was 30 mph and 81% on a dry road surface.

Speed limit at the scene

  • 20 mph31 (7.3%)
  • 30 mph390 (92%)
  • 60 mph2 (0.5%)

Weather at the time

  • Fine, no high winds335 (79%)
  • Raining, no high winds41 (9.7%)
  • Fine with high winds4 (0.9%)
  • Raining with high winds1 (0.2%)
  • Other38 (9%)
  • Not recorded4 (0.9%)

Road surface

  • Dry344 (81%)
  • Wet or damp76 (18%)
  • Frost or ice1 (0.2%)
  • Snow1 (0.2%)
  • Not recorded1 (0.2%)

Type of road

  • Single carriageway360 (85%)
  • Dual carriageway16 (3.8%)
  • One way street or slip road16 (3.8%)
  • Roundabout1 (0.2%)
  • Not recorded30 (7.1%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B304 crashes

Motorcyclists make up 25% of the people killed or injured on the B304, followed by pedestrians (23%).

Casualties by road user

  • Motorcyclist118 (25%)
  • Pedestrian108 (23%)
  • Car occupant96 (21%)
  • Cyclist84 (18%)
  • Bus or coach occupant40 (8.6%)
  • Taxi or private hire car occupant12 (2.6%)
  • Van occupant6 (1.3%)
  • Other vehicle occupant1 (0.2%)

Vehicles involved

  • Car403 (53%)
  • Motorcycle136 (18%)
  • Pedal cycle88 (12%)
  • Bus or coach47 (6.2%)
  • Van or goods vehicle up to 3.5 tonnes39 (5.1%)
  • Taxi or private hire car38 (5%)
  • Other vehicle6 (0.8%)
  • Other3 (0.4%)

Casualties by age

  • 0 to 52 (0.4%)
  • 6 to 105 (1.1%)
  • 11 to 158 (1.7%)
  • 16 to 2039 (8.4%)
  • 21 to 2578 (17%)
  • 26 to 35122 (26%)
  • 36 to 4560 (13%)
  • 46 to 5558 (12%)
  • 56 to 6522 (4.7%)
  • 66 to 7526 (5.6%)
  • Over 7515 (3.2%)
  • Not recorded30 (6.5%)

Drivers, passengers and pedestrians

  • Driver or rider271 (58%)
  • Pedestrian108 (23%)
  • Passenger86 (18%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B304

Map of the 25 most recent crashes on the B304

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

  • 25 crashes
  • Serious
  • Slight

B304 crashes by council area

Of the 423 collisions on the B304, 419 were in Kensington and Chelsea.

Collisions on the B304 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stKensington and Chelsea419461266

B304 crashes by town

Of the 423 collisions on the B304, 375 were in the built-up area of Kensington and Chelsea.

Recent crashes on the B304

These are the 25 most recent collisions on the B304, from 24 November 2021 to 21 October 2025.

Severity