DfT STATS19 2021–2025 · OS Open Roads lengths
Most Dangerous Roads in the UK
Quick answer: By fatal collisions, the deadliest road in Great Britain from 2021 to 2025 was the A5 (63 fatal collisions over 424 km), followed by the M6 (56) and the A38 (54). Per 10 km, the densest are urban roads such as the A503 in Islington.
Great Britain · ranked by fatal collisions
Deadliest roads
| # | Road | Fatal collisions | KSI collisions | KSI per 10 km | Length | Mostly in |
|---|---|---|---|---|---|---|
| 1 | A5 A Road |
63 | 506 | 11.9 | 424 km | Westminster, Brent, Barnet |
| 2 | M6 Motorway |
56 | 415 | 8.2 | 504 km | Cheshire East, Walsall, Birmingham |
| 3 | A38 A Road |
54 | 737 | 14 | 527 km | Birmingham, Bristol, City of, Somerset |
| 4 | A47 A Road |
49 | 358 | 11.4 | 314 km | Peterborough, Leicester, Birmingham |
| 5 | M1 Motorway |
49 | 357 | 7.9 | 449 km | Central Bedfordshire, St Albans, West Northamptonshire |
| 6 | A6 A Road |
47 | 652 | 14.2 | 458 km | Lancaster, Preston, Leicester |
| 7 | A1 A Road |
46 | 544 | 10.7 | 507 km | Islington, South Kesteven, Barnet |
| 8 | A41 A Road |
40 | 445 | 16.3 | 273 km | Birmingham, Westminster, Barnet |
| 9 | A40 A Road |
39 | 549 | 12.1 | 454 km | Ealing, Westminster, Buckinghamshire |
| 10 | A30 A Road |
39 | 394 | 8 | 493 km | Cornwall, Surrey Heath, East Devon |
| 11 | A52 A Road |
36 | 304 | 11.9 | 256 km | East Lindsey, Boston, Rushcliffe |
| 12 | M4 Motorway |
36 | 242 | 5.6 | 429 km | Hillingdon, West Berkshire, Wiltshire |
| 13 | A361 A Road |
35 | 214 | 7.4 | 288 km | Wiltshire, North Devon, Somerset |
| 14 | A4 A Road |
34 | 562 | 25.1 | 224 km | Westminster, Hounslow, Slough |
| 15 | A46 A Road |
34 | 330 | 9.6 | 344 km | West Lindsey, North East Lincolnshire, Newark and Sherwood |
| 16 | A9 A Road |
34 | 202 | 4.4 | 458 km | Highland, Perth and Kinross, Stirling |
| 17 | A14 A Road |
34 | 198 | 6.9 | 289 km | South Cambridgeshire, North Northamptonshire, Huntingdonshire |
| 18 | A19 A Road |
33 | 246 | 9.8 | 251 km | York, North Yorkshire, Doncaster |
| 19 | A1(M) Motorway |
29 | 198 | 6.4 | 310 km | Doncaster, North Yorkshire, Welwyn Hatfield |
| 20 | A44 A Road |
29 | 182 | 7.8 | 235 km | Herefordshire, County of, Wychavon, Powys |
| 21 | A12 A Road |
28 | 331 | 14.5 | 228 km | Redbridge, East Suffolk, Havering |
| 22 | A16 A Road |
28 | 190 | 14.7 | 129 km | East Lindsey, Boston, South Holland |
| 23 | A303 A Road |
28 | 160 | 8.7 | 183 km | Wiltshire, Test Valley, Somerset |
| 24 | A45 A Road |
28 | 146 | 10.2 | 143 km | West Northamptonshire, Birmingham, North Northamptonshire |
| 25 | A10 A Road |
26 | 417 | 25.6 | 163 km | Hackney, Haringey, Enfield |
| 26 | A57 A Road |
26 | 352 | 18 | 196 km | Liverpool, High Peak, Salford |
| 27 | A61 A Road |
26 | 351 | 19.2 | 183 km | Sheffield, Leeds, Wakefield |
| 28 | M62 Motorway |
26 | 237 | 9.9 | 238 km | Kirklees, Leeds, Calderdale |
| 29 | M25 Motorway |
25 | 371 | 11.8 | 314 km | Runnymede, Epping Forest, Sevenoaks |
| 30 | A27 A Road |
25 | 358 | 17.4 | 205 km | Chichester, Fareham, Arun |
Ranked by killed-or-seriously-injured collisions per 10 km
Most dangerous per kilometre
| # | Road | Fatal collisions | KSI collisions | KSI per 10 km | Length | Mostly in |
|---|---|---|---|---|---|---|
| 1 | A503 A Road |
4 | 175 | 115.3 | 15 km | Islington, Haringey, Waltham Forest |
| 2 | A215 A Road |
0 | 172 | 109.4 | 16 km | Southwark, Croydon, Lambeth |
| 3 | A315 A Road |
4 | 226 | 102.7 | 22 km | Hounslow, Hammersmith and Fulham, Kensington and Chelsea |
| 4 | A219 A Road |
1 | 176 | 89 | 20 km | Hammersmith and Fulham, Wandsworth, Merton |
| 5 | A205 A Road |
5 | 262 | 81.1 | 32 km | Lewisham, Lambeth, Greenwich |
| 6 | A3220 A Road |
7 | 118 | 78.5 | 15 km | Kensington and Chelsea, Wandsworth, Hammersmith and Fulham |
| 7 | A105 A Road |
1 | 137 | 75.6 | 18 km | Haringey, Enfield, Hackney |
| 8 | A4020 A Road |
4 | 169 | 68.8 | 25 km | Ealing, Hillingdon, Hammersmith and Fulham |
| 9 | A118 A Road |
0 | 134 | 61.8 | 22 km | Newham, Redbridge, Havering |
| 10 | A104 A Road |
3 | 133 | 61 | 22 km | Waltham Forest, Hackney, Islington |
| 11 | A214 A Road |
2 | 102 | 56.2 | 18 km | Wandsworth, Bromley, Lambeth |
| 12 | A124 A Road |
5 | 120 | 56.1 | 21 km | Newham, Barking and Dagenham, Havering |
| 13 | A23 A Road |
19 | 549 | 52.4 | 105 km | Lambeth, Croydon, Brighton and Hove |
| 14 | A112 A Road |
6 | 118 | 50.3 | 23 km | Waltham Forest, Newham, Epping Forest |
| 15 | A212 A Road |
1 | 91 | 49.5 | 18 km | Croydon, Lewisham, Southwark |
| 16 | A6177 A Road |
2 | 88 | 48.4 | 18 km | Bradford |
| 17 | A217 A Road |
7 | 200 | 46 | 43 km | Wandsworth, Merton, Reigate and Banstead |
| 18 | A206 A Road |
3 | 124 | 41.1 | 30 km | Greenwich, Bexley, Dartford |
| 19 | A647 A Road |
10 | 114 | 41.1 | 28 km | Bradford, Leeds, Calderdale |
| 20 | A4540 A Road |
4 | 73 | 41 | 18 km | Birmingham |
England · roads with most of their collisions in England
Most dangerous roads in England
| # | Road | Fatal collisions | KSI collisions | KSI per 10 km | Length | Mostly in |
|---|---|---|---|---|---|---|
| 1 | A5 A Road |
63 | 506 | 11.9 | 424 km | Westminster, Brent, Barnet |
| 2 | M6 Motorway |
56 | 415 | 8.2 | 504 km | Cheshire East, Walsall, Birmingham |
| 3 | A38 A Road |
54 | 737 | 14 | 527 km | Birmingham, Bristol, City of, Somerset |
| 4 | A47 A Road |
49 | 358 | 11.4 | 314 km | Peterborough, Leicester, Birmingham |
| 5 | M1 Motorway |
49 | 357 | 7.9 | 449 km | Central Bedfordshire, St Albans, West Northamptonshire |
| 6 | A6 A Road |
47 | 652 | 14.2 | 458 km | Lancaster, Preston, Leicester |
| 7 | A1 A Road |
46 | 544 | 10.7 | 507 km | Islington, South Kesteven, Barnet |
| 8 | A41 A Road |
40 | 445 | 16.3 | 273 km | Birmingham, Westminster, Barnet |
| 9 | A40 A Road |
39 | 549 | 12.1 | 454 km | Ealing, Westminster, Buckinghamshire |
| 10 | A30 A Road |
39 | 394 | 8 | 493 km | Cornwall, Surrey Heath, East Devon |
| 11 | A52 A Road |
36 | 304 | 11.9 | 256 km | East Lindsey, Boston, Rushcliffe |
| 12 | M4 Motorway |
36 | 242 | 5.6 | 429 km | Hillingdon, West Berkshire, Wiltshire |
| 13 | A361 A Road |
35 | 214 | 7.4 | 288 km | Wiltshire, North Devon, Somerset |
| 14 | A4 A Road |
34 | 562 | 25.1 | 224 km | Westminster, Hounslow, Slough |
| 15 | A46 A Road |
34 | 330 | 9.6 | 344 km | West Lindsey, North East Lincolnshire, Newark and Sherwood |
Scotland · roads with most of their collisions in Scotland
Most dangerous roads in Scotland
Is the A9 the most dangerous road in Scotland?
The A9 had 34 fatal collisions and 202 killed-or-seriously-injured collisions over its 458 km in 2021–2025, the most fatal collisions of any road in Scotland. Per 10 km it recorded 4.4 serious collisions, lower than busy urban roads, because its danger is spread along a long rural route.
| # | Road | Fatal collisions | KSI collisions | KSI per 10 km | Length | Mostly in |
|---|---|---|---|---|---|---|
| 1 | A9 A Road |
34 | 202 | 4.4 | 458 km | Highland, Perth and Kinross, Stirling |
| 2 | A82 A Road |
20 | 192 | 6.9 | 278 km | Highland, West Dunbartonshire, Glasgow City |
| 3 | A90 A Road |
16 | 117 | 4.3 | 269 km | City of Edinburgh, Aberdeenshire, Angus |
| 4 | A7 A Road |
15 | 102 | 6.6 | 155 km | City of Edinburgh, Scottish Borders, Cumberland |
| 5 | A85 A Road |
15 | 77 | 4.9 | 157 km | Argyll and Bute, Perth and Kinross, Stirling |
| 6 | A75 A Road |
14 | 77 | 4.8 | 159 km | Dumfries and Galloway |
| 7 | A96 A Road |
13 | 103 | 5.9 | 174 km | Highland, Aberdeenshire, Moray |
| 8 | M8 Motorway |
12 | 132 | 8.1 | 163 km | Glasgow City, West Lothian, Renfrewshire |
| 9 | A77 A Road |
11 | 103 | 6.5 | 158 km | South Ayrshire, Glasgow City, East Renfrewshire |
| 10 | A70 A Road |
11 | 72 | 5.9 | 123 km | City of Edinburgh, South Lanarkshire, South Ayrshire |
| 11 | A76 A Road |
10 | 43 | 4.7 | 92 km | Dumfries and Galloway, East Ayrshire |
| 12 | A92 A Road |
9 | 108 | 5.5 | 195 km | Fife, Dundee City, Angus |
| 13 | A71 A Road |
9 | 90 | 7.9 | 114 km | City of Edinburgh, East Ayrshire, West Lothian |
| 14 | A93 A Road |
8 | 58 | 3.3 | 176 km | Perth and Kinross, Aberdeenshire, Aberdeen City |
| 15 | A87 A Road |
8 | 45 | 2.7 | 168 km | Highland |
Wales · roads with most of their collisions in Wales
Most dangerous roads in Wales
| # | Road | Fatal collisions | KSI collisions | KSI per 10 km | Length | Mostly in |
|---|---|---|---|---|---|---|
| 1 | A48 A Road |
19 | 178 | 8.6 | 206 km | Cardiff, Carmarthenshire, Newport |
| 2 | A470 A Road |
17 | 177 | 5.5 | 320 km | Powys, Conwy, Rhondda Cynon Taf |
| 3 | A483 A Road |
14 | 183 | 8.3 | 221 km | Powys, Carmarthenshire, Cheshire West and Chester |
| 4 | A487 A Road |
14 | 175 | 6.8 | 256 km | Ceredigion, Pembrokeshire, Gwynedd |
| 5 | A55 A Road |
12 | 88 | 4.9 | 182 km | Flintshire, Conwy, Cheshire West and Chester |
| 6 | A525 A Road |
10 | 73 | 6.1 | 119 km | Denbighshire, Wrexham, Newcastle-under-Lyme |
| 7 | A494 A Road |
9 | 57 | 5.5 | 105 km | Gwynedd, Flintshire, Denbighshire |
| 8 | A548 A Road |
7 | 75 | 8.5 | 88 km | Flintshire, Conwy, Denbighshire |
| 9 | A472 A Road |
6 | 41 | 13.7 | 30 km | Caerphilly, Monmouthshire, Torfaen |
| 10 | A469 A Road |
5 | 42 | 10 | 42 km | Caerphilly, Cardiff |
| 11 | A4059 A Road |
5 | 29 | 7.9 | 36 km | Rhondda Cynon Taf, Powys |
| 12 | A484 A Road |
4 | 63 | 6.9 | 92 km | Carmarthenshire, Swansea, Ceredigion |
| 13 | A477 A Road |
4 | 46 | 10.1 | 45 km | Pembrokeshire, Carmarthenshire |
| 14 | A466 A Road |
4 | 21 | 4.1 | 50 km | Monmouthshire, Herefordshire, County of, Forest of Dean |
| 15 | A490 A Road |
4 | 18 | 5.3 | 34 km | Powys, Shropshire |
A collision counts for the first road recorded by the police. KSI = fatal plus adjusted serious collisions. Lengths are the total of all OS Open Roads links carrying the number. Roads under 15 km and with under 20 collisions are left out. Rates are per kilometre, not per vehicle: traffic volume is not in the data, so a busy motorway and a quiet rural A-road are not directly comparable. Northern Ireland is not in STATS19. Sources: DfT road safety open data (OGL v3); road lengths contain OS data © Crown copyright and database right 2026 (OGL v3).
Related: most dangerous roundabouts · most dangerous junctions · Wales 20mph data · live road pages · motorway closures tonight
Questions
Most dangerous roads — FAQ
What is the most dangerous road in the UK?
By fatal collisions, the deadliest road in Great Britain from 2021 to 2025 was the A5 (63 fatal collisions over 424 km), followed by the M6 (56) and the A38 (54). Per 10 km, the densest are urban roads such as the A503 in Islington. Neither ranking accounts for traffic volume, which is not published per road in STATS19.
Is the A9 the most dangerous road in Scotland?
The A9 had 34 fatal collisions and 202 killed-or-seriously-injured collisions over its 458 km in 2021–2025, the most fatal collisions of any road in Scotland. Per 10 km it recorded 4.4 serious collisions, lower than busy urban roads, because its danger is spread along a long rural route.
What is the most dangerous motorway in the UK?
By fatal collisions 2021–2025, the M6 (56), then the M1 (49) and M4 (36). Long, heavily used motorways lead on totals partly because they carry so much traffic.
Where does this data come from?
DfT STATS19 open data for 2021–2025 (every injury collision reported to the police in Great Britain, first road of each collision) and road lengths from Ordnance Survey Open Roads. Northern Ireland is not included.