- M and E People Limited
- M3 Europe Ltd
- M3 Group Ltd
- MacDonald Fyne Ltd
- Mach Recruitment Limited
- MacKenzie Brown Recruitment
- MadiganGill Limted
- Madison Browne International
- Madison Browne International
- Madison Chase
- Madison Chase
- Madisons Recruitment Ltd
- Maersk Line
- Magenta Consulting & Recruitment Ltd
- Magna Housing Ltd
- Magnifico Recruitment Ltd
- magnum
- Mai Day Recruitment Services Ltd
- Major Recruitment
- Major Recruitment Ltd
- Malt Consultancy Ltd
- Mana Resourcing Ltd
- Managing Consultant
- Manbir Bains Ltd
- Mane Contract Services
- Mane Contract Services
- Mango Solutions Recruitment Ltd
- Mansell Recruitment PLC
- manucomm recruitment
- Manufacturing Futures Ltd