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CrashStats

HP9 road accidents: crash map and statistics

Police recorded 2,764 road traffic collisions in the HP9 postcode district, Buckinghamshire, from 1979 to 2025, and 3,779 people were killed or injured in them. Of those collisions, 47 were fatal and 471 were serious.

In 2025 police recorded 22 collisions, up from 14 in 2024.

Collisions since 1979
2,764
1,406th highest of 2,813 postcode districts
Casualties
3,779
1.37 per collision
Fatal collisions
47
52 people killed
Serious collisions
471
577 seriously injured
Collisions in 2025
22
14 in 2024
Casualties in 2025
27
16 in 2024

Road collision statistics for HP9

Collisions by severity, 1979 to 2025

  • Fatal471.7%
  • Serious47117%
  • Slight2,24681%

What the data shows

  • HP9 had 266 collisions from 2016 to 2025, 50% fewer than the 529 from 2006 to 2015.
  • 19% of collisions in HP9 were fatal or serious, against 20% across Great Britain.
  • 278 children under 16 were killed or injured in HP9, 7.5% of the casualties whose age was recorded.
  • The road surface was wet, icy, snowy or flooded in 33% of collisions in HP9.

Where HP9 ranks among 2,813 postcode districts

Most collisions
1,406th
Most casualties
1,388th
Most fatal collisions
1,276th
Most serious collisions
1,575th

Collisions by day of the week

  • Monday416 (15%)
  • Tuesday414 (15%)
  • Wednesday410 (15%)
  • Thursday429 (16%)
  • Friday461 (17%)
  • Saturday357 (13%)
  • Sunday277 (10%)

Light conditions

  • Daylight1,972 (71%)
  • Dark, street lights lit528 (19%)
  • Dark, no street lighting205 (7.4%)
  • Dark, lighting unknown48 (1.7%)
  • Dark, street lights unlit11 (0.4%)

Type of road

  • Single carriageway1,648 (60%)
  • Dual carriageway569 (21%)
  • Roundabout501 (18%)
  • One way street or slip road39 (1.4%)
  • Not recorded7 (0.3%)

Speed limit at the scene

  • 30 mph881 (32%)
  • 40 mph148 (5.4%)
  • 50 mph466 (17%)
  • 60 mph621 (22%)
  • 70 mph646 (23%)
  • Not recorded2 (0.1%)

Weather at the time

  • Fine, no high winds2,237 (81%)
  • Raining, no high winds307 (11%)
  • Fine with high winds36 (1.3%)
  • Raining with high winds21 (0.8%)
  • Snowing, no high winds19 (0.7%)
  • Fog or mist17 (0.6%)
  • Snowing with high winds3 (0.1%)
  • Other89 (3.2%)
  • Not recorded35 (1.3%)

Who was hurt

  • Car occupant2,688 (71%)
  • Motorcyclist404 (11%)
  • Pedestrian272 (7.2%)
  • Cyclist207 (5.5%)
  • Van occupant98 (2.6%)
  • Goods vehicle occupant (over 3.5 tonnes)50 (1.3%)
  • Bus or coach occupant17 (0.4%)
  • Other vehicle occupant14 (0.4%)
  • Taxi or private hire car occupant14 (0.4%)
  • Minibus occupant13 (0.3%)
  • Other2 (0.1%)

Source: Department for Transport, STATS19 road safety data

HP9 road accidents by year

Collisions and casualties in HP9, 1979 to 2025

Collisions in HP9 peaked at 108 in 1996; 2025 had 22.

  • Collisions
  • Collisions in 2025: 22
  • Casualties

Source: Department for Transport, STATS19 road safety data

View as a table
YearCollisionsCasualties
20252227
20241416
20232734
20222128
20212429
20202024
20192940
20184051
20172935
20164046
20153144
20145166
20134866
20124264
20115470
20106384
20094355
20084762
200768104
200682104
20056484
200469108
200386116
20027496
200185121
200083128
199974107
199890119
199783118
1996108146
19956492
199482118
19936793
199276105
199171109
19905270
198970100
198880107
19876899
19867397
19856594
198489113
19836480
19825988
19815474
19804455
19797593

Map of recent crashes in HP9

Map of the 24 most recent crashes in HP9

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 HP9

The 24 most recent collisions in HP9 happened between 7 October 2024 and 16 December 2025.

Severity

Crashes by road in HP9

The A40 has the most collisions in HP9, 714 of 2,764 (26%), followed by the A355 (578).

Collisions in HP9 on each road, 1979 to 2025
RankRoadCollisionsCasualtiesFatalSerious
1stA4071494015132
2ndA3555788151577
3rdM404947611083
4thB474376463269
5thB4440162402

Council area for HP9

HP9 is in Buckinghamshire, where police recorded 72,942 collisions from 1979 to 2025. HP9 accounts for 3.8% of them.

Town in HP9

Of the 2,764 collisions in HP9, 989 (36%) were in Beaconsfield.