| Manor Garage Mexborough Limited | Mexborough | S64 9BX | 4 | View → |
| Manor Garage Plymouth Limited | Plymouth | PL4 0HG | 4, 5, 7 | View → |
| Manor Garage Swindon Ltd | Swindon | SN2 2NP | 1, 2, 4, 7 | View → |
| Manor Group Sales(MGS) | Wiltshire | SN14 6NA | 4 | View → |
| Manor House Garage Ltd | Penrith | CA11 9NS | 4 | View → |
| Manor Motor Company | Birmingham | B29 4HH | 4 | View → |
| Manor MOTs | Wormley | EN10 6DU | 4 | View → |
| Manor Park Motors | Beds | LU1 3HG | 4 | View → |
| Manor Service Centre Limited | Benfleet | SS7 4PW | 4, 5, 7 | View → |
| Mansel James Griffiths & Son | Pencader | SA39 9JL | 4 | View → |
| Mansell Street Garage Limited | London | E1 2LX | 4, 7 | View → |
| Manselton MOT Centre Limited | Swansea | SA5 8NX | 4 | View → |
| Mansfield 4X4 (Bury St Edmunds) Ltd | Bury St Edmunds | IP32 6NT | 4, 5, 7 | View → |
| Mansfield District Council | Mansfield | NG18 5GU | 4, 7 | View → |
| Mansfield MOT Centre | Luton | LU4 8NA | 4 | View → |
| Manston Auto Centre Limited | Kent | CT12 5GT | 4 | View → |
| Mantles Group Ltd | Royston | SG8 5HJ | 4 | View → |
| Mantles Kia | Royston | SG8 5DQ | 4 | View → |
| Mantra Motorcycles | Gloucester | GL1 3AX | 1, 2 | View → |
| Manvers Automotive Repair Specialists | Rotherham | S63 7EW | 4 | View → |
| Manywells MOT and Service | Bradford | BD13 5DN | 4 | View → |
| Maple Garage Limited (Sproatley) | Hull | HU11 4NA | 4, 5, 7 | View → |
| Maple Leaf Garage Limited | Daventry | NN11 8QJ | 4 | View → |
| Maple Leaf Garage Limited | Bromyard | HR7 4QU | 4 | View → |
| Maples Autos | Liverpool | L9 1BG | 4 | View → |
| Mapplewell Auto Centre Limited | Barnsley | S75 6BP | 1, 2, 3, 4, 5, 7 | View → |
| Maranello Egham | Egham | TW20 8RJ | 4 | View → |
| Marc's Garage Limited | Lytham | FY8 5EG | 4 | View → |
| Marcella Motors | Brierley Hill | DY5 3LA | 4 | View → |
| March Auto Care Limited | March | PE15 8EB | 4 | View → |
| March End Motors Ltd | Wolverhampton | WV10 9XE | 4 | View → |
| March MOT Centre | March | PE15 9NA | 4, 5, 7 | View → |
| Marchwey Motor Centre Ltd | Bristol | BS4 5PF | 4, 5, 7 | View → |
| Marchwoods (Motor Engineers) Limited | Folkestone | CT19 6DD | 4 | View → |
| Marcs Tyres & Autocare | Basildon | SS14 3DS | 4, 7 | View → |
| Marden Garage Limited | Marden | TN12 9QX | 4, 7 | View → |
| Mardon Motors | Seaford | BN25 1QG | 1, 2, 4 | View → |
| Mardy MOT and Repair Center | Swansea | SA4 4HJ | 4 | View → |
| Marehay Garage Services Limited | Derbyshire | DE5 8JN | 4 | View → |
| Marilly Motors | Derby | DE24 8JD | 4, 5, 7 | View → |
| Marina Motors | Leeds | LS13 4JA | 4 | View → |
| Marina MOTs | Sheerness | ME11 5WW | 1, 2, 4 | View → |
| Marine Garage | Dawlish | EX7 0AQ | 1, 2, 4 | View → |
| Marine Garage Services L.L.P. | Brighton | BN1 6JA | 4 | View → |
| Mario Garage Norwich Ltd | Norwich | NR6 6BZ | 4 | View → |
| Maris Street Motors Limited | Leeds | LS9 8RA | 4, 5, 7 | View → |
| Mark 1 MOT & Service Centre Ltd | Glasgow | G13 2UW | 4 | View → |
| Mark 1 Tyre and Exhaust Ltd | Norfolk | NR28 0AJ | 4 | View → |
| Mark Armstrong Motor Repairs | Northumberland | NE49 9HA | 4 | View → |
| Mark Billen | Sturminster Newton | DT10 1AZ | 4 | View → |
