M1  | London North Circular (West) to Castleford & Garforth |
| M2 | Rochester & Grain, England to Canterbury, Kent |
| M3 | Sunbury & Kingston to Southampton |
| M4 | London to Pont Abraham, Wales |
| M5 | West Bromwich & Birmingham to Bodmin, South West England |
| M6 | Rugby & Lutterworth to Carlisle, Northern England |
| M8 | Edinburgh, Scotland to Bishopton & Glasgow airport |
| M9 | Edinburgh to Dunblane via Stirling and Falkirk |
| M11 | London North Circular to Cambridge, England |
| M18 | M1 at Rotherham to the M62 near Goole |
| M20 | London, M25 motorway to Folkestone, Dover & Channel tunnel |
| M23 | Croydon & London to Pease Pottage |
| M25 | London, England |
| M32 | M4 to central Bristol |
| M40 | London, Slough & Uxbridge to Henley-in-Arden, Birmingam |
| M42 | Bromsgrove & Birmingham to Castle Donington |
| M50 | M5 Tewkesbury to Ross-on-Wye |
| M53 | Wallasey to Chester |
| M54 | Wolverhampton to Wellington |
| M55 | Preston to Blackpool |
| M56 | Didsbury , Stockport & Leeds to Queensferry, North Wales |
| M60 | Manchester |
| M62 | Knotty Ash, Merseyside to North Cave, Gilberdyke & Hull, East Riding of Yorkshire |