| MEL & DAVID SPANTON | — | — | — | Open → |
| Mel Freeman | Leeds | — | — | Open → |
| Mel Kendall | Leeds | — | — | Open → |
| Melanie & Chris Wilson | Selby | — | — | Open → |
| Melanie Dyson | York | — | — | Open → |
| MELANIE MYERS | — | — | — | Open → |
| MELLING | — | — | 07985394752 | Open → |
| MELLISSA KISBY | — | — | — | Open → |
| Melody Clarke | York | melody_clarke@yahoo.co.uk | — | Open → |
| Melton Borough Council | Melton Mowbray | buildingcontrol@melton.gov.uk | 01664 567771 | Open → |
| MELVIN DAWSON | — | — | — | Open → |
| Mendip District Council | Shepton Mallet, Somerset | — | 01749 344003 | Open → |
| MENNEL MOTORS | — | — | — | Open → |
| MER P HARGREAVES | — | — | — | Open → |
| Merseyside Fire and Rescue Authority | Bootle | planningandbuildingregulationsteam@merseyfire.gov.uk | 0151 296 6671 | Open → |
| Merthyr Tydfil County Borough Council | Merthyr Tydfil | building.control@merthyr.gov.uk | 01685 726263 | Open → |
| Merton Council | Morden | — | x | Open → |
| Merton Fire Department | Merton | MertonFireInfo@wi.rr.com | — | Open → |
| MESSER P D & DW BAGSHAW | — | — | — | Open → |
| Messer's Spring & Co | Cheshire | — | — | Open → |
| MESSERS D& P BAGSHAW | — | — | — | Open → |
| MESSERS SCREETON ESTATE AGENTS | — | — | — | Open → |
| Messrs Gill & Elgie | York | paulgill35@hotmail.com | — | Open → |
| METHA | — | — | — | Open → |
| Metropolitan Borough Wirral Council | Merseyside | — | 0151 647 7000 | Open → |