Road crashes in Hertsmere

8,705 recorded collisions since 2000.

Hertsmere has recorded 8,705 road collisions since 2000, 105 of them fatal and 1,199 causing serious injury. That makes it the 171st-busiest of 352 local authorities in Great Britain for recorded collisions. Around 15% caused death or serious injury. Its fatal rate of 12.1 per 1,000 collisions sits below the Great Britain average of 13.6. Numbers have fallen by about 51% since 2000, from 506 to 249 in 2024. The M25 is the most affected road locally, with 1,395 collisions.

Figures cover collisions reported to police (STATS19) from 2000 onward; severity definitions changed over time, so treat long-range trends with care. Source: DfT STATS19, Open Government Licence v3.0.