The A24: where people are seriously hurt
Over 2021–2025, 354 people were killed or seriously injured in 332 collisions on the A24, making it the 22th worst numbered road in Britain by that measure.
332
serious or fatal collisions
354
people killed or seriously injured
10
collisions that took a life
#22
of 150 numbered roads
What the record shows
The A24 carries 1,527 recorded injury collisions over the period, 332 of them serious or fatal. Serious injury concentrates in Wandsworth, Mole Valley, Horsham, with 3 further areas also recording collisions. Collisions here are less likely than average to be fatal (3% against 7%), typical of lower-speed urban sections. Most collisions were recorded on 30 mph sections. The worst year of the period was 2021 with 75 serious collisions, and the count is down 19% between 2021 and 2025.
Every serious and fatal collision on the A24
Blue markers are serious collisions, red crosses fatal. Click any marker for the year. Zoom in to see the specific junctions and stretches where they cluster.
Where along the route
- Wandsworth96 KSI
- Mole Valley62 KSI
- Horsham50 KSI
- Merton37 KSI
- Epsom and Ewell35 KSI
- Lambeth18 KSI
Local authority areas with the most serious collisions on this road.
The trend
Serious and fatal collisions on the A24
2025: 61 (down 7.6% on the year before) · peak 75 in 2021 · -18.7% across the period
Axis clipped to the data range to show year-on-year movement.
About the A24
How many accidents happen on the A24?
Police recorded 1,527 injury collisions on the A24 over 2021–2025, of which 332 were fatal or serious. Those serious collisions left 354 people killed or seriously injured, including 10 fatal collisions.
Is the A24 a dangerous road?
By volume of serious injury it ranks 22 of the 150 numbered roads we analyse, and 19 among a roads. That is a count rather than a rate: longer and busier roads accumulate more collisions, so a high ranking reflects exposure as well as risk.
Where on the A24 do collisions happen?
They concentrate in Wandsworth, Mole Valley, Horsham. The map on this page plots every serious and fatal collision recorded on the route, so you can see the specific stretches rather than the total.
Counts include every collision the police recorded on this road number across all authority areas. They are not adjusted for traffic volume or road length, so treat them as a measure of where injury concentrates rather than a per-mile risk rating. Method. Free to reuse with attribution to this page.
Need this data for your own work?
Site and junction reports from £95, next working day. Free for community groups, campaigners and journalists.