| Mohee Ltd | Administrative & support | 2021 |
| Moien Enterprises Ltd | Wholesale & retail | 2023 |
| Mojo Pet Beds Ltd | Manufacturing | 2025 |
| MOK Enterprises Limited | Hospitality | 2016 |
| Mola Trading Ltd | Wholesale & retail | 2020 |
| Molesworth Hotel Ltd | Hospitality | 2021 |
| Momentsbykash Ltd | Professional & scientific | 2025 |
| Momentum Vehicle Solutions Ltd | Wholesale & retail | 2025 |
| Money for Your Phone Limited | Wholesale & retail | 2010 |
| Monopoly Pizza Ltd | Hospitality | 2024 |
| Monréa Limited | Wholesale & retail | 2021 |
| Monte Jobs Limited | Health & social care | 2023 |
| Montec Financial Services Limited | Professional & scientific | 2025 |
| Montgomery Developments (NW) Ltd | Manufacturing | 2023 |
| Montgomery Traders Ltd | Wholesale & retail | 2025 |
| Moodybluerochdale Limited | Hospitality | 2025 |
| Moon Investment Property Ltd | Real estate | 2024 |
| Moonlight Grocery Ltd | Wholesale & retail | 2026 |
| Moonlight Properties Ltd | Real estate | 2016 |
| Moores Property Investments Ltd | Real estate | 2022 |
| Moores Training Services Ltd | Administrative & support | 2016 |
| Moore’S Scaffolding Ltd | Construction | 2023 |
| Moorhouse Fold Limited | Households | 1997 |
| Moorland General Stores Ltd | Wholesale & retail | 2017 |
| Moosa Foods Ltd | Hospitality | 2025 |
| Moosept Ltd | Other services | 2025 |
| Moreesy Limited | Wholesale & retail | 2025 |
| Morethanvalue Ltd | Wholesale & retail | 2024 |
| Morgans Management Group Ltd | Other services | 2024 |
| Moroccan Magic Limited | Wholesale & retail | 2015 |
| Morrall Consulting Limited | Professional & scientific | 2025 |
| Morris Construction (Oldham) Limited | Construction | 2013 |
| Morris Howard Limited | Other services | 2022 |
| Morrison Interiors Limited | Construction | 2016 |
| Morrison Property Management Ltd | Real estate | 2025 |
| MOS GT Ltd | Wholesale & retail | 2023 |
| Mosaz Cart Limited | Wholesale & retail | 2026 |
| Mosons Enterprise Ltd | Wholesale & retail | 2024 |
| Mosons Properties Ltd | Wholesale & retail | 2023 |
| MOT Childcare Services Limited | Health & social care | 2026 |
| MOT House Ltd | Wholesale & retail | 2016 |
| MOT72 Limited | Financial services | 2020 |
| Motaquip Autocentre Ltd | Other services | 2014 |
| Motion Videos Creative Limited | Information & communication | 2016 |
| Motley Film Productions Limited | Information & communication | 2015 |
| Motor Sales Company Ltd | Administrative & support | 2023 |
| Motor Sales Factory Ltd | Wholesale & retail | 2025 |
| Motor World Estates Limited | Real estate | 2012 |
| Motor World Holding Limited | Extraterritorial | 2005 |
| Motor World Limited | Wholesale & retail | 2008 |
| Motor World Properties Limited | Real estate | 2012 |
| Motorbikes 4 YOU Limited | Wholesale & retail | 2021 |
| Motorsport AI Limited | Information & communication | 2025 |
| Motostuff Limited | Wholesale & retail | 2021 |
| Motts Development Ltd | Construction | 2023 |
| Mounaya Property Investments Limited | Real estate | 2021 |
| Mountain of Light Property Management and Developments Ltd | Real estate | 2019 |
| Move Rapidly Ltd | Transport & logistics | 2025 |
| Moveon Transport Limited | Transport & logistics | 2026 |
| Moviclick Traders Ltd | Financial services | 2022 |
| Moyo Natural Juices Ltd | Manufacturing | 2024 |
| MPG Landscapes Limited | Administrative & support | 2003 |
| MPH Prestige (North West) Ltd | Wholesale & retail | 2021 |
| MQ Traders Ltd | Wholesale & retail | 2025 |
| MQR Auto Centre Ltd | Administrative & support | 2017 |
| MQR Limited | Other services | 2015 |
| MR and MRS MIR Properties Limited | Real estate | 2026 |
| MR Parmo Limited | Hospitality | 2018 |
| MR Property Management Manchester Ltd | Construction | 2022 |
| MR Softee Limited | Wholesale & retail | 2016 |
| MR Surveyors Ltd | Professional & scientific | 2023 |
| MR VAG UK Ltd | Wholesale & retail | 2016 |
| MRA Haven Estates Limited | Real estate | 2025 |
| Mrandmrsghaniproperties Limited | Real estate | 2019 |
| MRK Fitness Ltd | Other services | 2019 |
| Mrru Ltd | Wholesale & retail | 2025 |
| MRT Building Services Limited | Construction | 2007 |
| MS Active Ltd | Professional & scientific | 2021 |
| MS Car Care Ltd | Administrative & support | 2025 |
| MS Car Rental Limited | Administrative & support | 2026 |
| MS Construction (Oldham) Ltd | Administrative & support | 2010 |
| MS Four Management Limited | Real estate | 2025 |
| MS Marvels Ltd | Wholesale & retail | 2024 |
| MS Refrigeration Ltd | Professional & scientific | 2025 |
| Ms&A Holdings Ltd | Real estate | 2025 |
| MSA Investment (MCR) Limited | Real estate | 2013 |
| MSA Investment Limited | Administrative & support | 2005 |
| MSA Pallet Truck Services Limited | Wholesale & retail | 2019 |
| MSA Rochdale Limited | Financial services | 2023 |
| MSA Software Systems Ltd | Information & communication | 2002 |
| MSA Wheels and Castors Limited | Wholesale & retail | 2005 |
| Msagya Ltd | Wholesale & retail | 2014 |
| MSD Logic Limited | Information & communication | 2025 |
| Msds-Solutionz Ltd | Wholesale & retail | 2017 |
| MSG Dynamics Limited | Information & communication | 2023 |
| Msha Ltd | Wholesale & retail | 2025 |
| MSJ Capital Ventures Limited | Financial services | 2025 |
| MSJ Dental Limited | Health & social care | 2021 |
| MSJ Property Solutions Limited | Real estate | 2025 |
| MSK Global Edge Limited | Wholesale & retail | 2025 |