The M11: where people are seriously hurt
Over 2021–2025, 126 people were killed or seriously injured in 117 collisions on the M11, making it the 100th worst numbered road in Britain by that measure.
117
serious or fatal collisions
126
people killed or seriously injured
14
collisions that took a life
#100
of 150 numbered roads
What the record shows
The M11 carries 522 recorded injury collisions over the period, 117 of them serious or fatal. Serious injury concentrates in Epping Forest, Uttlesford, South Cambridgeshire, with 2 further areas also recording collisions. Collisions here are more likely than average to be fatal: 12% against 7% across the numbered network, which usually points to higher speeds. Most collisions were recorded on 70 mph sections. The worst year of the period was 2021 with 28 serious collisions, and the count is down 7% between 2021 and 2025.
Every serious and fatal collision on the M11
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
- Epping Forest42 KSI
- Uttlesford38 KSI
- South Cambridgeshire27 KSI
- Cambridge5 KSI
- Redbridge5 KSI
Local authority areas with the most serious collisions on this road.
The trend
Serious and fatal collisions on the M11
2025: 26 (up 23.8% on the year before) · peak 28 in 2021 · -7.1% across the period
Axis clipped to the data range to show year-on-year movement.
About the M11
How many accidents happen on the M11?
Police recorded 522 injury collisions on the M11 over 2021–2025, of which 117 were fatal or serious. Those serious collisions left 126 people killed or seriously injured, including 14 fatal collisions.
Is the M11 a dangerous road?
By volume of serious injury it ranks 100 of the 150 numbered roads we analyse, and 9 among motorways. 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 M11 do collisions happen?
They concentrate in Epping Forest, Uttlesford, South Cambridgeshire. 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.