London borough · England

Road risk in Sutton

Sutton ranks 50 of 192 British highway authorities on our road risk score. Here is what the official record shows, and how it compares.

Above averageRisk score 61.9/100ONS code E09000029

Police recorded 306 injury collisions in Sutton in 2025, hurting 361 people, of whom 72 were killed or seriously injured and 2 were killed. Set against the traffic its roads actually carry, that is 152.8 killed or seriously injured per billion vehicle miles, 90% above the median ranked authority (80.5).

Collisions: 306 in 2025
People hurt: 361 casualties
Killed or seriously injured: 72
Killed: 2
KSI per billion vehicle miles: 152.8 (median 80.5)
KSI, three-year average: 66.3 a year
Severity-adjusted KSI, 2025: 78 (recorded: 72)
Severity-adjusted KSI, three-year average: 70.7 a year (recorded: 66.3)
KSI per 100,000 residents: 33.6 — rank 109
Population: 213,972
Risk score: 61.9/100 — rank 50 of 192

Compiled by Stephen Hall, Data lead, Swift Assist. Source: DfT STATS19 and DfT road traffic estimates (2025), OGL v3. Updated 2026-10-08.

Direction of travel

Five years of collisions in Sutton

Across 2021–2025, recorded collisions were down 13.6%, with 2022 the worst year of the period at 394 collisions.

Collisions per year in Sutton

2025: 306 (down 15.5% on the year before) · peak 394 in 2022 · -13.6% across the period

Axis clipped to the data range to show year-on-year movement.

Two ways of measuring

Sutton looks more dangerous per mile driven than per resident

Divide casualties by the people who live here and Sutton ranks 109. Divide by the miles actually driven on its roads and it ranks 50 — a difference of 59 places.

That gap is the signature of a place that absorbs other people’s traffic. Relative to the volume its roads carry, the harm done here is worse than the resident population suggests, which is the pattern you would expect where a trunk route, a commuter corridor or a visitor economy brings in drivers who are not counted in the denominator everyone else uses. Neither number is the true one. Which you should use depends on whether you are asking how safe it is to live somewhere or how safe it is to drive there.

Vehicle crime · year ending June 2026

Vehicle crime in Sutton

5.54

offences per 1,000 residents

1,189

offences recorded, 12 months

of 287 areas, worst first

Sutton recorded 5.54 vehicle offences per 1,000 residents, above the England and Wales rate of 5.04.

Rate calculated from 1,189 offences and a population of 214,500 (ONS mid-2024), both taken from the same ONS release. Contains public sector information licensed under the Open Government Licence v3.0. Source: Office for National Statistics, Crime in England and Wales: Police Force Area data tables, year ending June 2026; police recorded crime collected by the Home Office.

Who is being hurt

Pedestrians, cyclists and riders in Sutton

These are the road users with the least protection when something goes wrong, and they carry a disproportionate share of the serious injuries. Across 306 collisions in Sutton, the three groups appear 183 times between them — an involvement rate of 59.8%.

Road user	Collisions	Share of all collisions
Pedestrians	60	19.6%
Cyclists	45	14.7%
Motorcyclists	78	25.5%

A single collision can involve more than one of these groups and is then counted in each row, so the rows do not add up to a share of the total.

Darkness, weather and the time of year

When collisions happen in Sutton

DfT records the light level and road surface at every collision, but publishes neither below national level. These are Sutton’s own shares over 1,023 collisions, with the national figure beside each one for comparison.

Share of collisions	Sutton	National	How it reads
In darknessAny collision where the officer recorded darkness, lit or unlit.	27.9%	28.7%	close to the national figure
In darkness, no street lightingThe rural lighting picture rather than the urban speeding one.	1.4%	6.3%	a small fraction of the national figure
On a wet road surfaceWet, damp or standing water at the scene.	21.5%	24.5%	below the national figure
On snow or iceRare everywhere, and concentrated in a handful of authorities.	0.6%	1.4%	well below the national figure

On the darkness share, Sutton ranks 95 of 192 authorities, counting from the highest.

The winter effect. Collisions in Sutton run 9.6% lower from November to January than from May to July — against 4.5% lower nationally. That is 244 collisions against 270.

What this does not tell you

A share is not a rate. A high darkness share means darkness accounts for more of Sutton’s collisions — not that its roads are more dangerous overall. Read it alongside the casualties-per-mile-driven figure above.
Condition is recorded, not tested. The officer records the surface and light level at the scene. It is an observation, not a measurement, and it is not a finding that the condition caused the collision.
Exposure is not controlled for. Fewer people travel at 3am than at 3pm, so a collision in darkness is drawn from a smaller pool of journeys. Without hourly traffic counts, these shares describe when collisions happen rather than how risky an hour is.

Every authority compared on the same measures: winter road risk across Britain.

Benchmark

Sutton against similar authorities

A national rank compares Sutton with places that may be nothing like it. This is the comparison a council actually uses: its statistical nearest neighbours — the authorities ONS identifies as most similar on population, economy and demography, restricted to the same tier, so counties are compared with counties. Within this group Sutton is 1 of 10 on casualties per mile driven, against a group median of 58.7.

Authority	KSI / bn miles	Score	National rank
Sutton (this page)	152.8	61.9	50
Bromley	122.8	59.9	60
Kingston upon Thames	101.8	49.8	98
Havering	69.8	47.8	112
Trafford	58.7	38.6	144
Stockport	58.6	37.3	153
Solihull	47.7	24.5	183
Buckinghamshire	41.8	38.8	143
Windsor and Maidenhead	38.9	28.8	171

Peer group: ONS statistical nearest neighbours, Open Government Licence v3. ONS notes the grouping is a snapshot that is not comparable with earlier editions, and is not a judgement about any authority’s performance. The road figures against it are ours.

National position

Sutton against its closest comparators

Sutton sits 50 of 192 nationally, and 46 of 148 within England. These are the authorities nearest to it in the table.

#	Authority	Score	KSI / bn miles
48	Bristol, City of	62	158
49	York	61.9	90.5
50	Sutton (this page)	61.9	152.8
51	Barking and Dagenham	61.4	144.1
52	Dundee City	61.4	100.3

See all 192 authorities →

Common questions

Road risk in Sutton, answered

How dangerous are the roads in Sutton?

In the latest official DfT figures, 306 road collisions in Sutton injured or killed 361 people, 72 of them killed or seriously injured. Measured against the traffic its roads actually carry, that is 152.8 people killed or seriously injured per billion vehicle miles, against a median of 80.5 across the ranked authorities — placing Sutton 50 of 192 authorities on our combined score, where 1 is the highest risk. The score weighs that rate alongside who is being hurt, the five-year trend and how often a serious collision proves fatal, so the rank is not the rate alone.

Are road casualties in Sutton rising or falling?

Across 2021–2025, recorded collisions in Sutton were down 13.6%, with 2022 the worst year of the period at 394 collisions. Year-to-year movement in a single authority is noisy, so the five-year direction carries more than any single year's change.

Who is being hurt on Sutton's roads?

In Sutton there were 60 collisions involving pedestrians, 45 involving cyclists and 78 involving motorcyclists, out of 306 in total. Added together that is an involvement rate of 59.8%, though a collision involving two of those groups is counted in both figures, so it is a comparable index rather than a clean share.

Who is responsible for road safety in Sutton?

Sutton is a london borough, and is the highway authority for its own roads. That means it sets local speed limits, designs junctions and crossings, and decides safety scheme spending. Motorways and most trunk roads are managed separately by National Highways in England, Transport Scotland, or the Welsh Government, so the worst road in an area is often not the council's to change. Enforcement sits with the local police force.

Where does this data come from?

DfT STATS19, the record police complete at the scene of every injury collision, published annually under the Open Government Licence, combined with DfT's own road traffic estimates for the mileage denominator. Collision, casualty and KSI counts on this page are for 2025; only the trend compares 2021–2025. STATS19 counts collisions police attended and recorded, so collisions never reported do not appear, and under-reporting is known to be worst for cyclists and for slight injuries.

What this means for you

What actually changes the odds in Sutton

Data is only useful if it changes what you do. These three are picked from Sutton’s own figures above, each with the number that prompted it. Every guide explains how the thing works before it suggests buying anything, and most cost less than a third of a typical insurance excess.

Alarmed disc lock

£20–£50

Motorcyclists are in 25% of Sutton's collisions, and bikes are also lifted rather than ridden away. An alarmed disc lock covers the theft half for about £30.

How it works →

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