A complete listing of motorways in the United Kingdom:
- Single digit motorways
- M1, the eastern north-south motorway linking London and Leeds and continuing north to the A1.
- M2, in Kent from Rochester to Faversham.
- M3, linking Southampton and London.
- M4, linking London and south Wales.
- M5, linking Exeter and the south-west of England with Birmingham and the Midlands.
- M6, the western north-south motorway linking the M1 at Rugby and Carlisle.
- M6 Toll, a toll motorway bypassing a busy stretch of the M6 around North Birmingham.
- M8, linking Edinburgh and Glasgow.
- M9, linking Edinburgh and Stirling.
- Two digit motorways
- M10, a short spur from the M1 to St Albans.
- M11, linking London and Cambridge.
- M18, linking the M1 at Rotherham and the M62 at Goole, South Yorkshire.
- M20, linking London (Swanley) and Folkstone.
- M23, linking London (Coulsdon) to beyond Crawley.
- M25, the London orbital motorway.
- M26, a short link between the M25 at Sevenoaks and the M20 before Maidstone.
- M27, the south coast route running from Cadnam, west of Southampton, to Portsmouth.
- M32, a spur from the M4 to central Bristol.
- M40, linking London and Birmingham and linking to the M42 Birmingham orbital motorway .
- M42, The southern and eastern part of the Birmingham orbital motorway extending north towards Ashby-de-la-Zouch and west to the M5.
- M45, a short spur from M1 north of Daventry towards Coventry.
- M48, the Severn Bridge, linking Thornbury and Newport, Monmouthshire over the River Severn. This used to be the M4 before the Second Severn Crossing was built.
- M49, a short link from M5 to M4 west of Bristol.
- M50, linking the M5 at Tewkesbury to Ross-on-Wye.
- M53, linking Chester and Birkenhead.
- M54, linking M6 north of Wolverhampton and Telford.
- M55, linking Blackpool and M6 at Preston.
- M56, linking Manchester and Chester.
- M57, a Liverpool bypass running north west from the M62.
- M58, linking Wigan and northern Liverpool.
- M60, the Manchester orbital motorway.
- M61, linking Preston and Manchester.
- M62, linking Liverpool and the approaches to Kingston-upon-Hull, the trans-Pennine link.
- M65, linking Preston and Colne, Lancashire.
- M66, linking Rawtenstall and M62 at Manchester.
- M67, linking the M60 at Denton to Hyde in Greater Manchester.
- M69, linking Leicester and Coventry.
- M73, linking Cumbernauld to the M74.
- M74, linking Glasgow and Abington in South Lanarkshire, where the A74(M) takes over.
- M77, linking Glasgow and Newton Mearns.
- M80, linking Glasgow and Stirling.
- M90, linking the Forth Road Bridge and Perth, Scotland.
- Three or more digit motorways and spurs
- M180, from the M18 at Thorne towards Grimsby and the A15 to the Humber Bridge.
- M181, the Scunthorpe spur from the M180.
- M271, the Totton, Southampton spur from the M27
- M275, the Portsmouth spur from the M27
- M602, M62 spur into Manchester.
- M606, M62 spur at Bradford.
- M621, M62 spur at Leeds.
- M876, a short link between motorways in the Falkirk area.
- M898, the Erskine Bridge approach road.
- Upgraded A-road designations
- A1(M), representing the parts of the A1 road between London and Newcastle-upon-Tyne that have been upgraded to motorway.
- A167(M) in central Newcastle-upon-Tyne.
- A194(M) spur from the Newcastle-upon-Tyne stretch of the A1(M) running towards the Tyne Tunnel.
- A3(M), a short stretch of the A3 road by-passing Waterlooville and Havant, that has been built to motorway standards.
- A308(M), linking the M4 junction 8/9 with Maidenhead.
- A329(M), linking Bracknell and Winnersh near Reading.
- A38(M), a spur from the M6 to central Birmingham, also known as the Aston Expressway. It is unique in having no central reservation.
- A404(M), linking the M4 junction 8/9 towardsHenley-on-Thames.
- A58(M) is the western part of the Leeds inner ring road.
- A601(M) Spur off the M6 at Carnforth, Lancashire. The southern part is single carriageway.
- A6144(M), the longest single-carriageway motorway spur in the United Kingdom from the M60 north of Sale towards Carrington
- A64(M) is the eastern part of the Leeds inner ring road.
- A66(M) is a short spur from the A1(M) to Darlington
- A74(M), linking Abington in South Lanarkshire at the end of the M74 with Carlisle.
- Roads which used to be motorways but have been downgraded
- A18(M) Spur from M18. Mostly now part of M180, although a section has been abandoned.
- A329(M) from Winnersh to Reading, now the A3290. Downgraded to permit Reading council to dedicate one lane for buses.
- A40(M) London Westway, now the A40.
- A41(M) Tring bypass, now the A41.
- A46(M) Spur towards Leicester from M1 at junction 21.
- M41 was a spur from the London Westway.
See Also
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