The most dangerous roads for cyclists in Britain (2025 data)
Every police-recorded cyclist casualty in Great Britain in 2025, broken down road by road.
If these numbers hit close to home
Behind every figure on this page is a rider and a family. Bikers' Mind is a mental health support programme for the UK's riders, motorcyclists and cyclists alike, delivered in partnership with Mental Health 360, a charity that has supported mental health in communities since 2003.
It includes plain English guides on life after a road accident, written with Mental Health 360.
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This page is built from the Department for Transport's STATS19 open data, the record of every road casualty reported to the police in Great Britain. We've taken the 2025 final release and counted casualties involving cyclists on each numbered road.
KSI means killed or seriously injured, the measure road safety professionals use most often.
One caveat matters more for cycling than for any other road user. The Department for Transport states that non-fatal cyclist casualties are among the most likely to be under-reported in road casualty data, because cyclists have no obligation to inform the police of a collision. The counts below are a floor, not a total.
Deaths are falling, serious injuries are not
Between 2004 and 2025, cyclist fatalities in Great Britain fell 41%, from 134 to 79. Over the same period serious injuries rose 34% and cycle traffic rose 42%.
Averaged over 2021 to 2025, 2 cyclists died and 77 were seriously injured every week.
Britain's 2025 cyclist casualty totals
Police-recorded casualties, Great Britain, unadjusted severity.
Cyclists
79
Killed
4,224
Seriously injured
11,739
Slightly injured
Where cyclists die and where they get hurt are different places
The roads with the most cyclist casualties are urban. The roads where cyclists are killed are mostly not. The Department for Transport reports that 54% of cyclist fatalities happened on rural roads, which carry 30% of cycle traffic, and that 58% of fatalities occurred away from a junction or more than 20 metres from one, compared with 40% of seriously injured cyclists. Every one of the five worst roads in the table below recorded zero cyclist deaths in 2025.
Where another vehicle was involved, 45% of cyclist fatalities were collisions between a cycle and a car. 82% of cyclist KSI casualties were male. The road safety factor most often recorded by police was ineffective observation by either the driver or the rider.
Top 30 roads by cyclist KSI
Click a column heading to sort. The table scrolls sideways on smaller screens.
| 1 | A4 | 0 | 36 | 82 | 36 | 118 |
| 2 | A3 | 0 | 32 | 104 | 32 | 136 |
| 3 | A205 | 0 | 27 | 58 | 27 | 85 |
| 4 | A6 | 2 | 25 | 44 | 27 | 71 |
| 5 | A259 | 0 | 25 | 24 | 25 | 49 |
| 6 | A23 | 0 | 24 | 101 | 24 | 125 |
| 7 | A11 | 1 | 23 | 85 | 24 | 109 |
| 8 | A315 | 1 | 23 | 66 | 24 | 90 |
| 9 | A10 | 1 | 20 | 63 | 21 | 84 |
| 10 | A24 | 0 | 19 | 69 | 19 | 88 |
| 11 | A38 | 1 | 18 | 29 | 19 | 48 |
| 12 | A2 | 1 | 16 | 47 | 17 | 64 |
| 13 | A217 | 0 | 17 | 37 | 17 | 54 |
| 14 | A215 | 0 | 16 | 40 | 16 | 56 |
| 15 | A308 | 0 | 16 | 39 | 16 | 55 |
| 16 | A200 | 0 | 12 | 62 | 12 | 74 |
| 17 | A40 | 2 | 10 | 53 | 12 | 65 |
| 18 | A202 | 0 | 12 | 47 | 12 | 59 |
| 19 | A3036 | 0 | 12 | 37 | 12 | 49 |
| 20 | A118 | 0 | 12 | 33 | 12 | 45 |
| 21 | A61 | 0 | 12 | 12 | 12 | 24 |
| 22 | A5 | 0 | 11 | 63 | 11 | 74 |
| 23 | A107 | 0 | 11 | 58 | 11 | 69 |
| 24 | A105 | 0 | 11 | 54 | 11 | 65 |
| 25 | A404 | 0 | 11 | 42 | 11 | 53 |
| 26 | A59 | 0 | 11 | 8 | 11 | 19 |
| 27 | A201 | 0 | 10 | 29 | 10 | 39 |
| 28 | A307 | 0 | 10 | 20 | 10 | 30 |
| 29 | A3218 | 0 | 10 | 11 | 10 | 21 |
| 30 | A219 | 0 | 9 | 50 | 9 | 59 |
2024 figures for comparison: cyclists 82 killed and 3,576 seriously injured.
Methodology
Figures are computed from the DfT's road casualty statistics casualty and collision files for 2025 (data.dft.gov.uk road-accidents-safety-data), the final release. Casualties involving cyclists are assigned to the first road of the collision. Roads without a number, including unclassified and C roads, are excluded. Severity is as reported by the police and hasn't been adjusted.
Published under the Open Government Licence v3.0. Contains public sector information licensed from the Department for Transport.
Source collection: Road accident and casualty statistics, gov.uk
If you ride these roads
- Most collisions involving cyclists happen at junctions, roundabouts and where vehicles turn across your path. Ride where you can be seen and make eye contact with drivers wherever possible.
- Urban A roads carry the highest number of cyclist casualties. Give parked cars a door's width of space and anticipate pedestrians stepping out.
- Rural roads account for more than half of cyclist deaths. Descend within your limits, watch for debris and gravel on bends, and ride single file on narrow lanes when traffic is behind you.
- Lights and high-visibility kit matter in poor weather and at dusk. Assume you haven't been spotted by drivers emerging from side roads.
- Wear a correctly fitted helmet on every ride. It won't prevent every injury, but it consistently reduces the risk and severity of head trauma.