The A143: where people are seriously hurt
Over 2021–2025, 116 people were killed or seriously injured in 91 collisions on the A143, making it the 139th worst numbered road in Britain by that measure.
91
serious or fatal collisions
116
people killed or seriously injured
14
collisions that took a life
#139
of 150 numbered roads
What the record shows
The A143 carries 243 recorded injury collisions over the period, 91 of them serious or fatal. Serious injury concentrates in West Suffolk, South Norfolk, Great Yarmouth, with 1 further areas also recording collisions. Collisions here are more likely than average to be fatal: 15% against 7% across the numbered network, which usually points to higher speeds. Most collisions were recorded on 60 mph sections. The worst year of the period was 2024 with 28 serious collisions, and the count is down 43% between 2021 and 2025.
Every serious and fatal collision on the A143
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
- West Suffolk48 KSI
- South Norfolk25 KSI
- Great Yarmouth11 KSI
- Mid Suffolk7 KSI
Local authority areas with the most serious collisions on this road.
The trend
Serious and fatal collisions on the A143
2025: 12 (down 57.1% on the year before) · peak 28 in 2024 · -42.9% across the period
Axis clipped to the data range to show year-on-year movement.
About the A143
How many accidents happen on the A143?
Police recorded 243 injury collisions on the A143 over 2021–2025, of which 91 were fatal or serious. Those serious collisions left 116 people killed or seriously injured, including 14 fatal collisions.
Is the A143 a dangerous road?
By volume of serious injury it ranks 139 of the 150 numbered roads we analyse, and 129 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 A143 do collisions happen?
They concentrate in West Suffolk, South Norfolk, Great Yarmouth. 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.
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