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CrashStats

A237 accidents: crash map and statistics

Police recorded 3,151 collisions on the A237 from 1979 to 2025, with 3,890 casualties. Of those crashes, 37 were fatal and 529 serious, and 38 people were killed.

In 2025 there were 45 collisions on the A237, down 15% from 53 in 2024, with 60 casualties.

Collisions since 1979
3,151
367th highest of 4,923 roads
Casualties
3,890
1.23 per collision
Fatal collisions
37
38 people killed
Serious collisions
529
568 seriously injured
Collisions in 2025
45
Down 15% on 2024
Casualties in 2025
60
Up 11% on 2024

Crash severity on the A237

On the A237, 1.2% of collisions were fatal and 17% serious, against 1.6% and 18% across Great Britain.

Collisions by severity, 1979 to 2025

  • Fatal371.2%
  • Serious52917%
  • Slight2,58582%

Where the A237 ranks among 4,923 roads

Most collisions
367th
Most casualties
397th
Most fatal collisions
563rd
Most serious collisions
395th

A237 accidents by year

Collisions on the A237 peaked at 98 in 1989 and were down to 45 in 2025.

Collisions and casualties on the A237, 1979 to 2025

  • Collisions
  • Collisions in 2025
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20254560
20245354
20234352
20226072
20213538
20203841
20194451
20184456
20176181
20165063
20154245
20145360
20133741
20125272
20114965
20104761
20094146
20084656
20074254
20065164
20055070
20046073
20038299
20026684
200188118
20008399
199984111
19988497
199790110
19968092
19956382
19946885
199382102
19928091
199193115
199092114
198998118
19888195
198798118
198682101
19857396
198485102
198392114
198285109
198196129
198090122
197993112

When crashes happen on the A237

Friday has the most collisions on the A237 (514), and 3pm to 6pm is the busiest time of day (680).

Collisions by day of the week

  • Monday429 (14%)
  • Tuesday494 (16%)
  • Wednesday477 (15%)
  • Thursday491 (16%)
  • Friday514 (16%)
  • Saturday427 (14%)
  • Sunday319 (10%)

Collisions by time of day

  • Midnight to 3am112 (3.6%)
  • 3am to 6am62 (2%)
  • 6am to 9am505 (16%)
  • 9am to noon431 (14%)
  • Noon to 3pm568 (18%)
  • 3pm to 6pm680 (22%)
  • 6pm to 9pm494 (16%)
  • 9pm to midnight299 (9.5%)

Collisions by month

  • January278 (8.8%)
  • February252 (8%)
  • March267 (8.5%)
  • April225 (7.1%)
  • May277 (8.8%)
  • June265 (8.4%)
  • July247 (7.8%)
  • August243 (7.7%)
  • September259 (8.2%)
  • October303 (9.6%)
  • November265 (8.4%)
  • December270 (8.6%)

Light conditions at the time

  • Daylight2,196 (70%)
  • Dark, street lights lit907 (29%)
  • Dark, lighting unknown31 (1%)
  • Dark, street lights unlit14 (0.4%)
  • Dark, no street lighting3 (0.1%)

Source: Department for Transport, STATS19 road safety data

Road and weather conditions in A237 crashes

On the A237, 97% of collisions happened where the speed limit was 30 mph and 72% on a dry road surface.

Speed limit at the scene

  • 20 mph77 (2.4%)
  • 30 mph3,056 (97%)
  • 40 mph17 (0.5%)
  • 50 mph1 (under 0.1%)

Weather at the time

  • Fine, no high winds2,301 (73%)
  • Raining, no high winds455 (14%)
  • Raining with high winds29 (0.9%)
  • Fine with high winds17 (0.5%)
  • Other288 (9.1%)
  • Not recorded61 (1.9%)

Road surface

  • Dry2,278 (72%)
  • Wet or damp815 (26%)
  • Frost or ice29 (0.9%)
  • Snow13 (0.4%)
  • Flood over 3cm deep1 (under 0.1%)
  • Not recorded15 (0.5%)

Type of road

  • Single carriageway2,718 (86%)
  • Roundabout107 (3.4%)
  • Dual carriageway57 (1.8%)
  • One way street or slip road27 (0.9%)
  • Not recorded242 (7.7%)

Source: Department for Transport, STATS19 road safety data

People hurt and vehicles involved in A237 crashes

Car occupants make up 52% of the people killed or injured on the A237, followed by motorcyclists (19%).

Casualties by road user

  • Car occupant2,007 (52%)
  • Motorcyclist748 (19%)
  • Pedestrian532 (14%)
  • Cyclist322 (8.3%)
  • Van occupant116 (3%)
  • Bus or coach occupant87 (2.2%)
  • Other75 (1.9%)
  • Not recorded3 (0.1%)

Vehicles involved

  • Car4,031 (69%)
  • Motorcycle772 (13%)
  • Van or goods vehicle up to 3.5 tonnes358 (6.1%)
  • Pedal cycle327 (5.6%)
  • Bus or coach134 (2.3%)
  • Goods vehicle over 3.5 tonnes129 (2.2%)
  • Other vehicle39 (0.7%)
  • Other52 (0.9%)

Casualties by age

  • 0 to 546 (1.2%)
  • 6 to 1087 (2.2%)
  • 11 to 15196 (5%)
  • 16 to 20594 (15%)
  • 21 to 25475 (12%)
  • 26 to 35794 (20%)
  • 36 to 45593 (15%)
  • 46 to 55359 (9.2%)
  • 56 to 65259 (6.7%)
  • 66 to 75153 (3.9%)
  • Over 75138 (3.5%)
  • Not recorded196 (5%)

Drivers, passengers and pedestrians

  • Driver or rider2,592 (67%)
  • Passenger766 (20%)
  • Pedestrian532 (14%)

Source: Department for Transport, STATS19 road safety data

Map of recent crashes on the A237

Map of the 25 most recent crashes on the A237

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

  • 25 crashes
  • Serious
  • Slight

A237 crashes by council area

Collisions on the A237 were recorded in 5 council areas. Sutton has the most, with 2,136, followed by Croydon (650) and Merton (354).

Collisions on the A237 in each area, 1979 to 2025
RankAreaCollisionsCasualtiesFatalSerious
1stSutton2,1362,60729369
2ndCroydon6508243110
3rdMerton354445448
4thKingston upon Thames3410
5thWandsworth3300

A237 crashes by town

Collisions on the A237 were recorded in 3 towns and built-up areas, led by Sutton, Sutton (1,721) and Croydon (560).

Recent crashes on the A237

These are the 25 most recent collisions on the A237, from 4 July to 24 December 2025.

Severity