| Maison DE LA Skin Clinic Ltd | Other services | 2026 |
| Maison Vero Ltd | Manufacturing | 2025 |
| Maje Worldwide Ltd | Other services | 2016 |
| Majestic Care Services Limited | Health & social care | 2015 |
| Majestic Self Drive Limited | Administrative & support | 2008 |
| Majestic Shot Limited | Professional & scientific | 2019 |
| Majestik(Uk) Ltd. | Transport & logistics | 2014 |
| Majesty's Golden Style Ltd | Other services | 2021 |
| Major Munch Ltd | Hospitality | 2024 |
| Major Thom Ltd | Information & communication | 2019 |
| MAK Motor Cars Limited | Wholesale & retail | 2020 |
| Makam Family Investments Ltd | Financial services | 2026 |
| Makan Holdco Limited | Financial services | 2024 |
| Makan Property Holdco Limited | Financial services | 2025 |
| Makarios Ltd. | Wholesale & retail | 2017 |
| Make a Website Ltd | Manufacturing | 2024 |
| Make Lemonade Limited | Professional & scientific | 2019 |
| Make ME Busy Ltd | Professional & scientific | 2022 |
| Make to Order Ltd | Wholesale & retail | 2017 |
| Makin Heating and Plumbing Limited | Construction | 2023 |
| Makin Property Group Ltd | Real estate | 2026 |
| Making Self-Assessment Digital Limited | Professional & scientific | 2021 |
| Makkah Academy Trust | Education | 2018 |
| Makkah Global Lawyers & Immigration Services Ltd | Professional & scientific | 2022 |
| Makkah Properties Limited | Real estate | 2016 |
| Makkah Travel Limited | Administrative & support | 2016 |
| Makkan and Patel Properties Ltd | Real estate | 2018 |
| Makmirza & Co Ltd | Manufacturing | 2024 |
| Mako Installations Limited | Other services | 2024 |
| Makpharm Limited | Health & social care | 2024 |
| Maktub Media Ltd | Professional & scientific | 2025 |
| Makvand Property’S Limited | Real estate | 2025 |
| Malabar Taste Buds Ltd | Hospitality | 2025 |
| Malcolm Christie Haulage Ltd | Transport & logistics | 2025 |
| Malcolm Nicholson and SON Limited | Wholesale & retail | 2016 |
| Maldia Ltd | Wholesale & retail | 2021 |
| Male Grooming Mastery Ltd | Professional & scientific | 2024 |
| Malek Motors Ltd | Wholesale & retail | 2026 |
| Malek Property Ltd | Real estate | 2025 |
| Malford Recruitment Limited | Professional & scientific | 2021 |
| Mali Solutions Limited | Information & communication | 2017 |
| Malihah Living Ltd | Energy | 2025 |
| Malik & Co Properties Ltd | Real estate | 2022 |
| Malik Bros Limited | Wholesale & retail | 2023 |
| Malik Capital Ltd | Real estate | 2017 |
| Malik Hotels Ltd | Financial services | 2022 |
| Malik's Boutique Ltd | Wholesale & retail | 2026 |
| Malik’S Mobile & Vape Ltd | Wholesale & retail | 2023 |
| Malixco Limited | Wholesale & retail | 2019 |
| Malloo Hub Ltd | Wholesale & retail | 2025 |
| Mallu Restaurant Ltd | Hospitality | 2025 |
| Malone & White Solicitors Ltd | Professional & scientific | 2019 |
| Maloney Solutions Plumbing & Heating Ltd | Construction | 2024 |
| Malrod Holdings Limited | Professional & scientific | 2004 |
| Malrod Limited | Construction | 2017 |
| Malsia Linguistics Ltd | Professional & scientific | 2024 |
| Malsis Hall Limited | Health & social care | 2016 |
| Malusi CIC | Education | 2023 |
| Malwar Ltd | Health & social care | 2017 |
| Mama and ME Limited | Wholesale & retail | 2025 |
| Mama G'S Kitchen Limited | Hospitality | 2024 |
| Mama MIA Bilingual Ltd | Health & social care | 2023 |
| Mamacita Ezeoche Limited | Hospitality | 2020 |
| Maman Christelle Ltd | Other services | 2025 |
| Mamas Grill Bolton Ltd | Hospitality | 2018 |
| Mamcc Ltd | Other services | 2026 |
| Mamu Teck Ltd | Wholesale & retail | 2023 |
| MAN Cave Barbers Bolton Limited | Other services | 2021 |
| MAN Fade Barber Bolton Ltd | Other services | 2024 |
| MAN for Himself Limited | Wholesale & retail | 2015 |
| Managed 365 Limited | Information & communication | 2025 |
| Managed Engineering Project Solutions Limited | Construction | 2012 |
| Managed Waste Services Limited | Water & waste | 2008 |
| Management Solutions Inc Limited | Professional & scientific | 2022 |
| Manar Limited | Real estate | 2023 |
| Manas Property Ltd | Real estate | 2026 |
| Manav & Co. Ltd | Wholesale & retail | 2025 |
| Manchester Bariatric Services Ltd | Health & social care | 2010 |
| Manchester Bottle GAS Ltd | Extraterritorial | 2013 |
| Manchester Cardiology Services Limited | Health & social care | 2012 |
| Manchester Carpet Tile Centre Limited | Construction | 1976 |
| Manchester Conservatoire of Creative and Performing Arts Limited | Education | 2023 |
| Manchester Deli Grills Ltd | Professional & scientific | 2024 |
| Manchester Design Services Limited | Professional & scientific | 2007 |
| Manchester Diamond Drilling Ltd | Construction | 2018 |
| Manchester DRY Risers Ltd | Public administration | 2025 |
| Manchester Electrical Professional Installers Limited | Energy | 2016 |
| Manchester Feast Ltd | Hospitality | 2025 |
| Manchester Football Academy Limited | Professional & scientific | 2015 |
| Manchester Gate & Barrier Ltd | Manufacturing | 2021 |
| Manchester General Surgery Ltd | Health & social care | 2010 |
| Manchester Housing Solution Limited | Real estate | 2021 |
| Manchester Joinery & Interiors Ltd | Manufacturing | 2009 |
| Manchester Mainline Ltd | Transport & logistics | 2025 |
| Manchester Mart Ltd | Wholesale & retail | 2026 |
| Manchester Mechanical Solutions Ltd | Construction | 2025 |
| Manchester Medipark LLP | | 2013 |
| Manchester Mobile MIX Ltd | Manufacturing | 2022 |
| Manchester Paper Products Limited | Manufacturing | 2014 |
| Manchester Personnel Consultancy Ltd | Professional & scientific | 2026 |