Road rankings

Collision rates by road

Police-reported collisions on each motorway and A-road from 2021 to 2025, set against the traffic on it, so busy roads are compared fairly with quiet ones.

Last updated: 15 September 2026
Data source: Department for Transport
Records analysed: 173,918 reported collisions on 515 roads
Methodology: View methodology

Across Great Britain there were 4.9 collisions per 100 million vehicle miles on motorways, 31.5 on A-roads and 47.8 on minor roads. Among the 515 roads with enough data, the highest rate is on the A105 (324.3), and the highest for a motorway on the M621 (10.5). 10 of the 10 A-roads with the highest rates are wholly or mostly in London.

A-roads with the highest collision rates

Collisions per 100 million vehicle miles, 2021 to 2025, for A-roads of 10 miles or more with at least 50 collisions.

The 25 A-roads with the highest collision rates, 2021 to 2025
#
1	A105Islington to Enfield	10.9	15,343	984	324.3	45.2
2	A503Camden to Waltham Forest	10.0	16,233	989	301.7	53.4
3	A315Westminster to Hounslow	14.1	14,928	1,107	301.6	61.6
4	A219Hammersmith and Fulham to Merton	10.8	18,347	943	258.5	48.3
5	A124Newham to Havering	12.2	17,161	879	229.7	31.4
6	A112Newham to Essex	14.7	14,248	795	217.9	32.3
7	A4020Hammersmith and Fulham to Buckinghamshire	14.4	22,796	1,172	197.3	28.5
8	A118Newham to Havering	12.8	21,335	951	192.2	27.1
9	A104Islington to Essex	13.5	16,609	724	180.8	33.2
10	A205Hounslow to Greenwich	19.5	23,253	1,348	159.1	30.9
11	A212Lewisham to Croydon	10.6	19,829	582	153.5	24.0
12	A214Wandsworth to Bromley	11.1	17,773	542	151.1	28.4
13	A110Barnet to Redbridge	11.3	16,771	426	132.0	17.0
14	A206Greenwich to Kent	17.3	19,780	757	124.0	20.3
15	A4040In Birmingham	25.7	16,056	795	112.8	20.4
16	A222Croydon to Bexley	15.0	16,726	515	111.1	17.7
17	A432South Gloucestershire to City of Bristol	13.9	10,499	251	97.1	23.7
18	A226Kent to Medway	17.5	11,780	340	96.2	19.5
19	A312Harrow to Richmond upon Thames	14.7	34,428	828	96.1	11.8
20	A1134In Cambridgeshire	10.3	13,824	239	94.9	20.6
21	A6177In Bradford	10.2	20,853	350	93.9	23.6
22	A217Hammersmith and Fulham to Surrey	26.5	23,144	1,035	92.9	18.0
23	A308Kensington and Chelsea to Windsor and Maidenhead	33.1	18,201	958	90.3	19.5
24	A307Richmond upon Thames to Surrey	13.0	14,428	305	89.9	18.9
25	A232Surrey to Bromley	17.7	19,862	564	88.2	15.3

Motorways by collision rate

Motorways by collision rate, 2021 to 2025
#
1	M621Kirklees to Leeds	10.8	57,171	116	10.5	–
2	M65In Lancashire	29.0	62,005	323	10.4	2.2
3	M2In Kent	28.7	73,043	319	8.9	2.5
4	M25Kent to Thurrock	118.4	145,590	2,302	7.5	1.2
5	M55Lancashire to Blackpool	14.0	61,484	103	7.4	–
6	M20In Kent	51.4	64,791	400	6.9	1.3
7	M11Redbridge to Cambridgeshire	56.8	83,615	522	6.6	1.5
8	M27Hampshire to Portsmouth	32.1	105,676	385	6.4	1.3
9	M58Sefton to Wigan	12.8	42,200	57	6.2	1.5
10	M61Salford to Lancashire	24.8	88,269	226	5.9	1.6
11	M3Surrey to Hampshire	62.5	91,563	571	5.7	1.1
12	M23Surrey to West Sussex	17.4	92,982	150	5.4	1.5
13	M62Liverpool to East Riding of Yorkshire	103.3	97,736	963	5.4	1.3
14	M8City of Edinburgh to Renfrewshire	67.0	69,777	405	5.0	1.6
15	M57Knowsley to Sefton	11.2	77,479	73	5.0	1.0
16	M60Bury to Stockport	37.8	131,422	423	4.9	1.0
17	M1Barnet to Leeds	203.4	115,234	1,929	4.8	0.89
18	M180Doncaster to North Lincolnshire	25.7	39,391	87	4.8	0.98
19	M18Rotherham to East Riding of Yorkshire	29.3	67,793	168	4.7	1.0
20	M6Leicestershire to Cumberland	246.4	95,479	1,823	4.6	1.1
21	M56Stockport to West Cheshire	37.5	104,912	278	4.3	1.0
22	M90City of Edinburgh to Perth & Kinross	43.1	37,563	115	4.0	1.5
23	M74Glasgow City to South Lanarkshire	42.5	55,118	167	4.0	1.4
24	A1(M)Hertfordshire to Gateshead	156.5	69,300	762	4.0	1.0
25	M53Wirral to West Cheshire	22.3	65,277	101	4.0	–
26	M4Hounslow to Carmarthenshire	196.5	91,647	1,152	3.8	0.80
27	M42Worcestershire to Leicestershire	44.8	89,637	262	3.6	0.97
28	M80Glasgow City to Stirling	25.8	52,195	81	3.6	0.96
29	M5Sandwell to Devon	165.9	97,573	800	2.9	0.76
30	M54Staffordshire to Telford and Wrekin	24.8	50,949	63	2.8	0.66
31	M40Buckinghamshire to Warwickshire	90.9	92,260	400	2.7	0.82
32	A74(M)South Lanarkshire to Cumberland	49.7	37,540	89	2.7	1.3
33	M9City of Edinburgh to Stirling	31.5	41,568	58	2.6	1.3

Most collisions per mile of road

Collisions a year for each mile of A-road, 2021 to 2025. This measures how many happen along a road, not the risk to each driver: busy roads score high. The A503 has 19.8 a year per mile.

The 25 A-roads with the most collisions per mile, 2021 to 2025
#
1	A503Camden to Waltham Forest	10.0	16,233	989	19.8	301.7
2	A105Islington to Enfield	10.9	15,343	984	18.1	324.3
3	A219Hammersmith and Fulham to Merton	10.8	18,347	943	17.5	258.5
4	A4020Hammersmith and Fulham to Buckinghamshire	14.4	22,796	1,172	16.3	197.3
5	A315Westminster to Hounslow	14.1	14,928	1,107	15.7	301.6
6	A118Newham to Havering	12.8	21,335	951	14.9	192.2
7	A124Newham to Havering	12.2	17,161	879	14.4	229.7
8	A406Hounslow to Newham	28.5	87,764	2,033	14.3	47.0
9	A205Hounslow to Greenwich	19.5	23,253	1,348	13.8	159.1
10	A312Harrow to Richmond upon Thames	14.7	34,428	828	11.3	96.1
11	A212Lewisham to Croydon	10.6	19,829	582	11.0	153.5
12	A112Newham to Essex	14.7	14,248	795	10.8	217.9
13	A104Islington to Essex	13.5	16,609	724	10.7	180.8
14	A214Wandsworth to Bromley	11.1	17,773	542	9.8	151.1
15	A23Lambeth to Brighton and Hove	59.1	32,830	2,723	9.2	80.1
16	A206Greenwich to Kent	17.3	19,780	757	8.8	124.0
17	A13Tower Hamlets to Southend-on-Sea	47.0	64,709	1,870	8.0	37.1
18	A217Hammersmith and Fulham to Surrey	26.5	23,144	1,035	7.8	92.9
19	A110Barnet to Redbridge	11.3	16,771	426	7.5	132.0
20	A222Croydon to Bexley	15.0	16,726	515	6.9	111.1
21	A6177In Bradford	10.2	20,853	350	6.9	93.9
22	A232Surrey to Bromley	17.7	19,862	564	6.4	88.2
23	A4040In Birmingham	25.7	16,056	795	6.2	112.8
24	A404Westminster to Windsor and Maidenhead	42.6	23,675	1,289	6.1	73.2
25	A308Kensington and Chelsea to Windsor and Maidenhead	33.1	18,201	958	5.8	90.3

Data sources and methodology

Datasets used on this page
Figures	Source	Period	Records	Updated
Reported collisions	Road safety open data (STATS19) Department for Transport Derived statistics UK Motoring	2021 to 2025	173,918 reported collisions on 515 roads	15 September 2026
Traffic	Road traffic statistics (AADF by count point) Department for Transport Derived statistics UK Motoring	2000 to 2025	99 count points in 2025	15 September 2026

Roads qualify with at least 10 miles and 50 collisions over the period, so a handful of collisions cannot put a short road at the top.
A collision counts for a road when police record it as the first road. Collisions at junctions where the road is the second road are left out.
Rates divide collisions by the vehicle miles DfT estimates for the same road and years.
STATS19 covers injury collisions reported to the police; damage-only collisions are not included.
Fatal or serious uses DfT’s adjusted serious figures.

How we calculate these figures All data sources

Contains public sector information licensed under the Open Government Licence v3.0.

A-roads with the highest collision rates

Motorways by collision rate

Most collisions per mile of road

Data sources and methodology

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