| M and J Guest House | in Hotels, Cleethorpes, Lincolnshire, England |
| M by Montcalm Shoreditch London Tech City | in Hotels, London, Greater London, England |
| Macbeth Arms | in Hotels, Lumphanan, Aberdeenshire, Scotland |
| Macdonald Elmers Court Resort | in Hotels, Lymington, Hampshire, England |
| Macdonald Forest Hills Resort | in Hotels, Aberfoyle, Stirlingshire, Scotland |
| MacDonald Hotel & Cabins | in Hotels, Kinlochleven, Highland, Scotland |
| Macdonald House | in Hotels, Inverness, Highland, Scotland |
| Macdonald Lochanhully Woodland Club | in Hotels, Carrbridge, Highland, Scotland |
| Macdonald Plas Talgarth Resort | in Hotels, Pennal, Gwynedd, Wales |
| Macdonald Spey Valley Golf & Country Club | in Hotels, Aviemore, Highland, Scotland |
| Macinnisfree Cottage | in Hotels, Teangue, Highland, Scotland |
| MacKays | in Hotels, Oban, Argyll & Bute, Scotland |
| Mackenzie Guest house | in Hotels, Edinburgh, Midlothian, Scotland |
| MacLean Guest House | in Hotels, Fort William, Highland, Scotland |
| Macneils Croft | in Hotels, Gorteneorn, Highland, Scotland |
| Madeira In Fife | in Hotels, Pittenweem, Fife, Scotland |
| Madeleine'S Barn | in Hotels, Wells-next-the-Sea, Norfolk, England |
| Maenllwyd Guest House | in Hotels, Machynlleth, Powys, Wales |
| Maes Gwyn | in Hotels, Llandudno, Conwy, Wales |
| Maes Madog Cottages | in Hotels, Betws-y-coed, Conwy, Wales |
| Maes Y Wawr | in Hotels, Felinfoel, Carmarthenshire, Wales |
| Maes-y-Garth | in Hotels, Betws-y-coed, Conwy, Wales |
| Maes-Yr-Adwy | in Hotels, Abergorlech, Carmarthenshire, Wales |
| Maesmor | in Hotels, Bala, Gwynedd, Wales |
| Magdala Apartment | in Hotels, Nottingham, Nottinghamshire, England |
| Magnolia | in Hotels, Chickerell, Dorset, England |
| Magnolia Cottage | in Hotels, Aberaeron, Ceredigion, Wales |
| Magnolia House | in Hotels, Poole, Dorset, England |
| Magpie Cottage | in Hotels, Filey, North Yorkshire, England |
| Magpie's Nest | in Hotels, Horrabridge, Devon, England |
