| Mark Clifford & Sons Limited | Melton Mowbray | LE14 3QA | 4, 5, 7 | View → |
| Mark Coburn Vehicle Repairs Ltd | Newport | PO30 1YS | 1, 2, 4, 5, 7 | View → |
| Mark Davall Motorcycles Ltd | Essex | CM20 2AR | 1, 2 | View → |
| Mark Devlin Auto Services | Edinburgh | EH28 8QP | 4 | View → |
| Mark Edmondson | Carlisle | CA5 7DE | 4 | View → |
| Mark Ellis Motor Services Ltd | Immingham | DN40 1QR | 4 | View → |
| Mark Gibson Motor Services Ltd | Darlington | DL2 3PT | 1, 2, 4 | View → |
| Mark Hannam Autos | Gravesend | DA11 8BX | 3, 4 | View → |
| Mark Hart Motor Engineers Limited | Bridlington | YO16 6XS | 1, 2, 4 | View → |
| Mark Holmes Auto Engineering Limited | Fleetwood | FY7 7PH | 4 | View → |
| Mark Johns Motors | Kirkby Stephen | CA17 4JA | 4 | View → |
| Mark Kelly 4X4 Services Ltd | Tavistock | PL19 0NT | 4 | View → |
| Mark Loftus Motor Services Limited | Manchester | M25 3HN | 4 | View → |
| Mark One Automotive Limited | Halesowen | B63 3PG | 4, 5, 7 | View → |
| Mark Richards Motor Repairs | Weymouth | DT4 9DN | 4 | View → |
| Mark Stead | Bridgend | CF31 2AL | 4, 5, 7 | View → |
| Mark Stonehouse Auto Services | Saltburn by the Sea | TS12 3EH | 4, 7 | View → |
| Mark Tallentire Motor Services | Barnard Castle | DL12 0DA | 4 | View → |
| Mark Transport Co Limited | Orpington | BR6 6DA | 4, 5, 7 | View → |
| Mark Trodd | Basingstoke | RG24 8NT | 4 | View → |
| Mark-One Auto Specialists | Ashton Under Lyne | OL6 9PQ | 4 | View → |
| Mark's Autocare Ltd | Windsor | SL4 4LE | 1, 2, 4 | View → |
| Mark's Vehicle Services | Norwich | NR16 1JD | 4, 5, 7 | View → |
| Market Garage Limited | Nottingham | NG6 8HD | 4 | View → |
| Market Place Garage | Manchester | M7 4ED | 4 | View → |
| Market Place Garage | Houghton le Spring | DH5 8AN | 4 | View → |
| Market Rasen Motor Company Ltd | Market Rasen | LN8 3EP | 4 | View → |
| Markham and Smith Motor Engineers Ltd | Witham | CM8 2AT | 4 | View → |
| Markhams Garage Limited | Leominster | HR6 9QN | 4 | View → |
| Markos Autos | Huddersfield | HD1 6RX | 1, 2, 4, 7 | View → |
| Marks Autos | Wrexham | LL14 1TG | 4 | View → |
| Marks Motors | Wrexham | LL11 5NH | 4, 7 | View → |
| Marks Service Centre (MSC) Ltd | Stoke on Trent | ST11 9RD | 4 | View → |
| Marks Transport Group Ltd | Lincoln | LN4 1BF | 4, 5, 7 | View → |
| Marlborough Service Station | London | N19 4NP | 4 | View → |
| Marlborough Service Station | Plymouth | PL2 3AF | 4 | View → |
| Marlbrook Auto Centre | Bromsgrove | B61 0HL | 4 | View → |
| Marldon Service Station Ltd | Paignton | TQ3 1NA | 4 | View → |
| Marlen Motors | Dursley | GL11 4NH | 4 | View → |
| Marlin Motor Engineers Limited | Milton Keynes | MK3 5NA | 4, 5, 7 | View → |
| Marlow Garage | High Wycombe | HP12 3PY | 4 | View → |
| Marple Motor Company Limited | Stockport | SK6 7PZ | 4 | View → |
| Marple Road Garage | Stockport | SK2 5QB | 4 | View → |
| Marra Motorsport Ltd | Workington | CA14 1BQ | 4 | View → |
| Marriott and Stimson | Peterborough | PE6 8AS | 4 | View → |
| Marriott Auto Services | Buxton | SK17 6UF | 4 | View → |
| Marriott Motorcycles Ltd | Birkenhead | CH41 2TW | 1, 2 | View → |
| Marsdens of Blackburn | Blackburn | BB2 1XD | 4 | View → |
| Marsh & Chalfont Hire Ltd | Warminster | BA12 9HD | 4 | View → |
| Marsh Bros Garage Limited | Leigh | WN7 2AP | 4 | View → |
