UK public data, by local authority district
StatsMapped

Housing, jobs, schools, roads and population for every local authority district in the United Kingdom — six datasets from five official publishers, each with the publisher's own caveats attached.

Why the caveats matter

Every figure carries the publisher's own caveats. Where a statistic is published for a wider area than the one you clicked, or where the publisher itself flags it as unreliable, the page says so rather than quietly rounding it off.

The UK's four nations publish separately, so some figures stop at a border: house sale prices cover England and Wales, road collisions Great Britain, and pupil absence England only. An area with fewer datasets isn't missing data — its nation publishes that statistic through a different body.

Road collisions — Hertsmere

223, latest 2025.

223 road collisions were recorded.

What these terms mean

Collision
A recorded road traffic collision resulting in at least one injury, reported to the police under the STATS19 system -- damage-only collisions are not required to be reported and are not included. Source
Severity
DfT classes each collision as Fatal, Serious or Slight, based on the worst injury recorded. This figure combines all three.

Before you use these figures

  • Great Britain only: STATS19 covers England, Scotland and Wales. Northern Ireland records road collisions through PSNI, a separate system not included here.
  • All severities combined: This figure counts every recorded collision -- fatal, serious and slight -- combined. DfT's own data separates these by severity; a severity-specific breakdown is not loaded here.
  • Collisions, not casualties: This counts collision EVENTS, not the people involved. One collision can produce several casualties, so this figure will usually be lower than a casualty count for the same area.
  • Open Government Licence: Source: Department for Transport, Road Safety Data (STATS19). Contains public sector information licensed under the Open Government Licence v3.0.

Cite this figure:

Road collisions — Hertsmere
223 for Hertsmere, 2025
StatsMapped last confirmed this figure on 4 Sep 2026.
Source: DfT -- STATS19 Road Safety Data, via statsmapped.com
https://statsmapped.com/united-kingdom/local-authority/hertsmere/road-collisions

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