List 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.
  • 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, South Wales 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 Birmingham 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 theHumber bridge[?].
  • M181[?], the Scunthorpe[?] spur from the M180[?].
  • M271[?], the Totton[?], Southampton spur from the M27[?]
  • M275[?], the Portsmouth spur from the M27[?]
  • 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.
  • A329(M)[?], linking Bracknell[?] and 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[?].
  • A58(M)[?] is the western part of the Leeds inner ring road.
  • 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
  • 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.
  • M41 was a spur from the London Westway.

See Also

• British Road Numbering Scheme