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CrashStats

New Denham road accidents: crash map and statistics

Police recorded 178 road traffic collisions in New Denham, Buckinghamshire, from 1979 to 2025, and 222 people were killed or injured in them. Of those collisions, 1 was fatal and 34 were serious.

No collisions were recorded in 2025, after 1 in 2024.

Collisions since 1979
178
2,076th of 2,851 towns, highest first
Casualties
222
1.25 per collision
Fatal collisions
1
1 person killed
Serious collisions
34
39 seriously injured
Collisions in 2025
0
1 in 2024
Casualties in 2025
0
1 in 2024

Road collision statistics for New Denham

Collisions by severity, 1979 to 2025

  • Fatal10.6%
  • Serious3419%
  • Slight14380%

What the data shows

  • New Denham had 21 collisions from 2016 to 2025, 25% fewer than the 28 from 2006 to 2015.
  • 20% of collisions in New Denham were fatal or serious, against 20% across Great Britain.
  • 14 children under 16 were killed or injured in New Denham, 6.4% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 29% of collisions in New Denham.

Where New Denham ranks among 2,851 towns

Most collisions
2,076th
Most casualties
2,144th
Most fatal collisions
2,420th
Most serious collisions
2,171st

Collisions by day of the week

  • Monday27 (15%)
  • Tuesday28 (16%)
  • Wednesday25 (14%)
  • Thursday30 (17%)
  • Friday31 (17%)
  • Saturday23 (13%)
  • Sunday14 (7.9%)

Light conditions

  • Daylight127 (71%)
  • Dark, street lights lit46 (26%)
  • Dark, lighting unknown2 (1.1%)
  • Dark, no street lighting2 (1.1%)
  • Dark, street lights unlit1 (0.6%)

Type of road

  • Single carriageway144 (81%)
  • Roundabout18 (10%)
  • Dual carriageway15 (8.4%)
  • Not recorded1 (0.6%)

Speed limit at the scene

  • 30 mph60 (34%)
  • 40 mph92 (52%)
  • 50 mph1 (0.6%)
  • 60 mph21 (12%)
  • 70 mph3 (1.7%)
  • Not recorded1 (0.6%)

Weather at the time

  • Fine, no high winds138 (78%)
  • Raining, no high winds19 (11%)
  • Fine with high winds6 (3.4%)
  • Fog or mist2 (1.1%)
  • Raining with high winds1 (0.6%)
  • Snowing, no high winds1 (0.6%)
  • Other7 (3.9%)
  • Not recorded4 (2.2%)

Who was hurt

  • Car occupant133 (60%)
  • Motorcyclist40 (18%)
  • Cyclist19 (8.6%)
  • Pedestrian16 (7.2%)
  • Van occupant9 (4.1%)
  • Taxi or private hire car occupant3 (1.4%)
  • Bus or coach occupant1 (0.5%)
  • Goods vehicle occupant (over 3.5 tonnes)1 (0.5%)

Source: Department for Transport, STATS19 road safety data

New Denham road accidents by year

Collisions and casualties in New Denham, 1979 to 2025

Collisions in New Denham peaked at 9 in 1992; none were recorded in 2025.

  • Collisions
  • Collisions in 2025
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
202500
202411
202334
202222
202111
202011
201911
201845
201723
201666
201511
201411
201311
201211
2011712
201023
200955
200833
200735
200644
200524
200447
200333
200244
200158
200033
199966
199856
199746
199623
199522
199456
199378
1992910
199179
1990710
198958
198845
1987810
198634
198579
198433
198357
198267
198166
198033
197945

Map of recent crashes in New Denham

Map of the 24 most recent crashes in New Denham

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

  • 24 crashes
  • Fatal
  • Serious
  • Slight

Recent road crashes in New Denham

The 24 most recent collisions in New Denham happened between 18 September 2013 and 30 May 2024.

Severity

Crashes by road in New Denham

The A4020 has the most collisions in New Denham, 146 of 178 (82%), followed by the A40 (19).

Collisions in New Denham on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA4020146187132
2ndA40192202
3rdA40103300

Council areas covering New Denham

Collisions in New Denham were recorded in 2 council areas. Buckinghamshire has 173 of 178 (97%).

Collisions in New Denham by council area, 1979 to 2025
RankCouncil areaCollisionsCasualtiesFatalSerious
1stBuckinghamshire173217134
2ndHillingdon5500

Postcode district for New Denham

All 178 collisions in New Denham were in the UB9 postcode district.