| Moggach | Matthew | Avison Young | Education, Leisure and Hospitality, Offices, Public Authority | Scotland |
| Mitchell | callum | GL Hearn | Leisure and Hospitality, Offices, Retail, Warehouses | London |
| Mills | Keith | GL Hearn | Leisure and Hospitality, Retail | London, South East England, South West England |
| Midwinter | Matthew | Sanderson Weatherall LLP | Education, Factories, Leisure and Hospitality, Motor Trade, Offices, Public Authority, Retail, Warehouses | East Anglia, East Midlands, London, Scotland, South East England, South West England, West Midlands |
| Messiter | Paul | Gerald Eve LLP | | |
| Meierdirk | Rosalie | Allsop | Motor Trade, Offices, Retail, Warehouses | East Anglia, East Midlands, London, South East England, South West England, West Midlands |
| Meech | Andrew | Dalton Warner Davis LLP | Education, Offices, Retail, Warehouses | East Anglia, East Midlands, London, South East England |
| McMullan | Micky | Wilks Head & Eve | Education, Factories, Leisure and Hospitality, Offices, Public Authority, Retail, Warehouses | East Anglia, East Midlands, London, North East England, North West England, Scotland, South East England, South West England, Wales, West Midlands, Yorkshire and Humberside |
| McKaig | Billy | WYM Rating | Factories, Health, Leisure and Hospitality, Offices, Retail, Warehouses | Scotland |
| McInnes | Paul | Carron Real Estate Limited | Factories, Health, Leisure and Hospitality, Motor Trade, Offices, Public Authority, Retail, Warehouses | East Anglia, East Midlands, London, North East England, North West England, Scotland, South East England, South West England, Wales, West Midlands, Yorkshire and Humberside |
| McEwan | Barry | Gerald Eve LLP | Education, Factories, Health, Leisure and Hospitality, Motor Trade, Offices, Public Authority, Retail, Warehouses | Scotland |
| McDougall | Beverley | Avison Young | Education, Factories, Health, Leisure and Hospitality, Motor Trade, Offices, Public Authority, Retail, Warehouses | East Midlands, London, North East England, North West England, Northern Ireland, Scotland, South West England, Wales, West Midlands, Yorkshire and Humberside |
| McCudden | Fergus | JLL | Offices, Retail, Warehouses | London, South East England |
| McCrea | Peter | | | |
| McCormack | Ken | Montagu Evans | Education, Factories, Health, Leisure and Hospitality, Motor Trade, Offices, Public Authority, Retail, Warehouses | Northern Ireland, Scotland |
| McCausland | David | Farebrother | | |
| McCarthy | Joe | Aitchison Raffety | Education, Leisure and Hospitality, Offices, Retail | London |
| Mattiuzzo | Robbie | Montagu Evans | Offices, Retail, Warehouses | East Midlands, London, South East England, West Midlands |
| Matheakis | Daniel | JLL | Offices, Retail | South West England |
| Massie | Patrick | Daniel Watney | Factories, Health, Motor Trade, Offices, Retail, Warehouses | London |