Starting with M
| Station name | Area | |
|---|---|---|
| M&S Live | ||
| Maestro | AfriStar - All | |
| Magic 105.4 | Greater London, Digital - Various | |
| Magic 1152 (Tyne and Wear) | Tyne and Wear | |
| Magic 1152 (Manchester) | Manchester | |
| Magic 1161 | East Yorkshire and Northern Lincolnshire | |
| Magic 1170 | Teesside | |
| Magic 1548 | Liverpool | |
| Magic 828 | West Yorkshire | |
| Magic 999 | Preston and Blackpool | |
| Magic AM (South Yorkshire) | South Yorkshire and the North Midlands | |
| Radio Magnetic | Internet | |
| Makro FM | Makro Wholesalers | |
| Radio Maldwyn | Mid Wales and The Borders | |
| BBC Manchester | Greater Manchester | |
| Manchester United Radio | Manchester | |
| Mansfield 103.2 | Mansfield, Ashfield and Bolsover | |
| Manx Radio | Isle of Man | |
| Radio Marsden | Royal Marsden Hospitals, Sutton & Chelsea | |
| Masti Radio | Digital - Bradford and Huddersfield | |
| Mater Hospital Radio | Mater public and private hospitals | |
| Radio Mayday | ||
| McCollsFM | McColls Stores | |
| Hospital Radio Medway | Gillingham, Kent | |
| Mercia | Coventry and Warwickshire | |
| Herts Mercury 96.6 | Hemel Hempstead, St Albans, Rickmansworth & Watford | |
| Mercury FM | Reigate and Crawley | |
| BBC Merseyside | Merseyside | |
| Metro Radio | Tyne and Wear | |
| MFR | Highlands, Moray and Aberdeenshire | |
| Mid West Radio | Mayo | |
| Mid-Downs Hospital Radio | The Princess Royal Hospital and Brighton & Sussex University Hospitals NHS Trust, Haywards Heath | |
| Midlands 103 | Laois, Offaly and Westmeath | |
| Midwest Radio (Blandford and the Vale) | Blandford & The Blackmore Vale | |
| Midwest Radio (Somerset and West Dorset) | South Somerset and West Dorset | |
| MikeLive! | Internet | |
| Millside Hospital Radio | Mansfield & Ashfield Hospitals | |
| Ministry of Sound Radio | Internet | |
| Minster FM | York and Surrounding Areas | |
| Mix 96 | Aylesbury Vale | |
| Moorlands Radio | ||
| Moray Firth Radio 1107AM | Inverness and Surrounding Areas | |
| More Than Just Radio | UK and the globe | |
| Morrisons Radio | ||
| MY Radio | Pontefract General Infirmary and Pinderfields General Hospital |
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