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CrashStats

B303 accidents: crash map and statistics

Police recorded 183 collisions on the B303 from 1979 to 2025, with 203 casualties. Of those crashes, 2 were fatal and 40 serious, and 2 people were killed.

In 2025 there was 1 collision on the B303, down 75% from 4 in 2024, with 1 casualty.

Collisions since 1979
183
3,354th highest of 4,923 roads
Casualties
203
1.11 per collision
Fatal collisions
2
2 people killed
Serious collisions
40
43 seriously injured
Collisions in 2025
1
Down 75% on 2024
Casualties in 2025
1
Down 75% on 2024

Crash severity on the B303

On the B303, 1.1% of collisions were fatal and 22% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal21.1%
  • Serious4022%
  • Slight14177%

Where the B303 ranks among 4,923 roads

Most collisions
3,354th
Most casualties
3,602nd
Most fatal collisions
3,485th
Most serious collisions
3,266th

B303 accidents by year

Collisions on the B303 peaked at 16 in 1979 and were down to 1 in 2025.

Collisions and casualties on the B303, 1979 to 2025

  • Collisions
  • Collisions in 2025: 1
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202511
202444
202300
202200
202146
202000
201911
201822
201722
201622
201500
201411
201333
201211
201144
201034
200933
200822
200722
200633
200523
200433
200355
200234
200145
200022
199944
199888
199777
199644
199567
199467
199345
199255
199144
1990710
198955
198866
198755
198666
198544
198422
198311
19821116
198188
198077
19791619

When crashes happen on the B303

Tuesday has the most collisions on the B303 (36), and 3pm to 6pm is the busiest time of day (40).

Collisions by day of the week

  • Monday20 (11%)
  • Tuesday36 (20%)
  • Wednesday28 (15%)
  • Thursday31 (17%)
  • Friday35 (19%)
  • Saturday19 (10%)
  • Sunday14 (7.7%)

Collisions by time of day

  • Midnight to 3am7 (3.8%)
  • 3am to 6am1 (0.5%)
  • 6am to 9am32 (17%)
  • 9am to noon27 (15%)
  • Noon to 3pm30 (16%)
  • 3pm to 6pm40 (22%)
  • 6pm to 9pm32 (17%)
  • 9pm to midnight14 (7.7%)

Collisions by month

  • January11 (6%)
  • February14 (7.7%)
  • March20 (11%)
  • April10 (5.5%)
  • May18 (9.8%)
  • June13 (7.1%)
  • July23 (13%)
  • August16 (8.7%)
  • September13 (7.1%)
  • October10 (5.5%)
  • November16 (8.7%)
  • December19 (10%)

Light conditions at the time

  • Daylight139 (76%)
  • Dark, street lights lit44 (24%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in B303 crashes

On the B303, 94% of collisions happened where the speed limit was 30 mph and 79% on a dry road surface.

Speed limit at the scene

  • 20 mph9 (4.9%)
  • 30 mph172 (94%)
  • 40 mph1 (0.5%)
  • 50 mph1 (0.5%)

Weather at the time

  • Fine, no high winds125 (68%)
  • Raining, no high winds20 (11%)
  • Fine with high winds3 (1.6%)
  • Raining with high winds2 (1.1%)
  • Other28 (15%)
  • Not recorded5 (2.7%)

Road surface

  • Dry145 (79%)
  • Wet or damp36 (20%)
  • Frost or ice1 (0.5%)
  • Oil or diesel1 (0.5%)

Type of road

  • One way street or slip road114 (62%)
  • Single carriageway58 (32%)
  • Dual carriageway4 (2.2%)
  • Not recorded7 (3.8%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in B303 crashes

Pedestrians make up 28% of the people killed or injured on the B303, followed by cyclists (20%).

Casualties by road user

  • Pedestrian56 (28%)
  • Cyclist40 (20%)
  • Car occupant38 (19%)
  • Motorcyclist38 (19%)
  • Bus or coach occupant27 (13%)
  • Taxi or private hire car occupant2 (1%)
  • Van occupant2 (1%)

Vehicles involved

  • Car149 (52%)
  • Motorcycle43 (15%)
  • Pedal cycle41 (14%)
  • Bus or coach31 (11%)
  • Van or goods vehicle up to 3.5 tonnes10 (3.5%)
  • Goods vehicle over 3.5 tonnes4 (1.4%)
  • Taxi or private hire car4 (1.4%)
  • Other3 (1.1%)

Casualties by age

  • 0 to 51 (0.5%)
  • 6 to 102 (1%)
  • 11 to 157 (3.4%)
  • 16 to 2021 (10%)
  • 21 to 2533 (16%)
  • 26 to 3547 (23%)
  • 36 to 4523 (11%)
  • 46 to 5520 (9.9%)
  • 56 to 6518 (8.9%)
  • 66 to 7513 (6.4%)
  • Over 757 (3.4%)
  • Not recorded11 (5.4%)

Drivers, passengers and pedestrians

  • Driver or rider108 (53%)
  • Pedestrian56 (28%)
  • Passenger39 (19%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the B303

Map of the 25 most recent crashes on the B303

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

  • 25 crashes
  • Serious
  • Slight

B303 crashes by council area

Of the 183 collisions on the B303, 180 were in Lambeth.

Collisions on the B303 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stLambeth180199240

B303 crashes by town

Of the 183 collisions on the B303, 116 were in the built-up area of Lambeth.

Recent crashes on the B303

These are the 25 most recent collisions on the B303, from 4 February 2011 to 3 July 2025.

Severity