- Mitchelston - 1 company
- Mitchelston Industrial Estate - 1 company
- Moffat - 2 companies
- Moira - 2 companies
- Mold - 23 companies
- Molesey - 1 company
- Monmouth - 15 companies
- Monmouthshire - 3 companies
- Montgomery - 2 companies
- Montrose - 7 companies
- Moonachie - 1 company
- Morayshire - 2 companies
- Morbach - 1 company
- Morden - 23 companies
- Morecambe - 39 companies
- Moreton - 1 company
- Moreton in Marsh - 11 companies
- Moreton-in-Marsh - 7 companies
- Morley - 6 companies
- Morpeth - 13 companies
- Morriston - 1 company
- Moseley - 1 company
- Moston - 1 company
- Motherwell - 36 companies
- Mottram - 1 company
- Moulsford - 1 company
- Moulton - 2 companies
- Moulton Park - 1 company
- Mountain Ash - 7 companies
- Mountnessing - 1 company
- Mountsorrel - 1 company
- Much Wenlock - 1 company
- Mühltal - 1 company
- Muir of Ord - 5 companies
- Mülheim - 1 company
- Mursley - 1 company
- Musselburgh - 15 companies
- Muston - 1 company
- Mytholmroyd - 1 company
Towns 136 to 174 | Page 4 of 4