| Magnolia Garden Maintenance Limited | Administrative & support | 2018 |
| Magocean | Professional & scientific | 2025 |
| Maguire Weighing Ltd | Manufacturing | 2012 |
| MAH Electrical Ltd | Professional & scientific | 2024 |
| Maha & Bharat Ltd | Hospitality | 2021 |
| Maher Aldin Limited | Hospitality | 2025 |
| Mahg Ltd | Financial services | 2022 |
| Maid for the JOB Ltd | Administrative & support | 2023 |
| Maidens Butchers Limited | Wholesale & retail | 2003 |
| Mailroom Machines Ltd | Manufacturing | 2011 |
| Maina Solutions Limited | Administrative & support | 2019 |
| Mainsphere Limited | Wholesale & retail | 2013 |
| Mainway Travel Ltd | Transport & logistics | 2025 |
| Majestic Cuts Ltd | Other services | 2022 |
| Majestic Developments (NW) Limited | Construction | 2006 |
| Majestic Gym Limited | Arts & recreation | 2008 |
| Majestic Living Space Limited | Construction | 2021 |
| Majestic Management Company (Orrell) Limited | Households | 2000 |
| Majestic Promotions Limited | Arts & recreation | 2019 |
| Majestic Windows NW Limited | Construction | 2014 |
| Major Oak Capital Limited | Professional & scientific | 2013 |
| Major Oak LLP | | 2020 |
| Maka International Ltd | Professional & scientific | 2024 |
| Makarow Team Ltd | Construction | 2023 |
| Makbest Ltd | Other services | 2016 |
| Makeoversforyou Limited | Professional & scientific | 2024 |
| Makercore Ltd | Manufacturing | 2025 |
| Makerfield Academy Trust | Education | 2012 |
| Makerfield Catering Company Limited | Hospitality | 1960 |
| Makerfield Community Trust | Education | 2009 |
| Makerfield Construction Ltd | Construction | 2022 |
| Makerfield Design Partnership Ltd | Professional & scientific | 2006 |
| Makerfield Finishes Ltd | Construction | 2018 |
| Makerfield Heating Ltd | Construction | 2026 |
| Makerfield Metal & Recycling Limited | Water & waste | 2018 |
| Makerfield Mortgages Limited | Financial services | 2015 |
| Makerfield Properties Ltd | Real estate | 2025 |
| Makerfield Services Limited | Construction | 2016 |
| Makerfield Systems Limited | Administrative & support | 2005 |
| Making Menopause Matter Limited | Administrative & support | 2024 |
| Malaika Mwape Limited | Health & social care | 2023 |
| Malak NK Ltd | Other services | 2026 |
| Malawak Ltd | Wholesale & retail | 2024 |
| Malina Mini Market Ltd | Wholesale & retail | 2018 |
| Malina Mini Mart Ltd | Wholesale & retail | 2020 |
| Malkins Management Company Ltd | Households | 2019 |
| Mallion & Co Ltd | Professional & scientific | 2026 |
| Mallison Berry Estates Ltd | Real estate | 2025 |
| Maloneys Ltd | Hospitality | 2009 |
| Malpaso Specialist Safety Services Limited | Professional & scientific | 2024 |
| Malt House Rentals Ltd | Hospitality | 2025 |
| Malvern Wedding Cars (West Lancs) Limited | Administrative & support | 2007 |
| Mama MIA Charcoal Grill Ltd | Hospitality | 2024 |
| Mama MIA MIA Limited | Hospitality | 2018 |
| Mamma MIA Pizzeria Ltd | Hospitality | 2020 |
| Mamondi Property Limited | Real estate | 2025 |
| MAN Go Barbers Ltd | Other services | 2022 |
| MAN Scaffolding Services Ltd | Construction | 2015 |
| Managed Print Solutions (NW) Limited | Administrative & support | 2018 |
| Management AI (Mayi) Ltd | Information & communication | 2025 |
| Manc Consultancy Limited | Professional & scientific | 2023 |
| Manchester Advanced Medical Services Limited | Health & social care | 2020 |
| Manchester Centre for Cognitive Behaviour Therapy Ltd | Health & social care | 2007 |
| Manchester Cleaning Services Ltd | Administrative & support | 2024 |
| Manchester Construction Services Ltd | Construction | 2025 |
| Manchester Dance Community (MDC) Ltd | Arts & recreation | 2024 |
| Manchester Demolition Company Limited | Construction | 2019 |
| Manchester Ecig Store Limited | Wholesale & retail | 2017 |
| Manchester Geotechnical Limited | Professional & scientific | 2020 |
| Manhattan Shevington Premier Ltd | Hospitality | 2017 |
| Manic Leisure Limited | Hospitality | 2025 |
| Manifesto Cuts Ltd | Other services | 2025 |
| Mank Solutions Ltd | Manufacturing | 2026 |
| Manley Developments Limited | Wholesale & retail | 2000 |
| Manley Group Ltd | Other services | 2003 |
| Manor Properties (NW) Ltd | Real estate | 2023 |
| Manor Wines Wigan Ltd | Wholesale & retail | 2019 |
| Manos Estate Ltd | Real estate | 2020 |
| Manscape Studios Ltd | Health & social care | 2026 |
| Manseem Group Ltd | Wholesale & retail | 2025 |
| Mansio Properties Ltd | Real estate | 2018 |
| Mantan Ltd | Wholesale & retail | 2023 |
| MANTRA4HER Ltd | Wholesale & retail | 2025 |
| MAP Bodyshop Limited | Wholesale & retail | 2026 |
| MAP Care Group Limited | Health & social care | 2026 |
| MAP Security Ltd | Construction | 2025 |
| Mappelli Associates Ltd | Professional & scientific | 2024 |
| Mapper Media Limited | Information & communication | 2026 |
| Mapu Transport Ltd | Wholesale & retail | 2018 |
| Marcenos | Professional & scientific | 2025 |
| Marduk Beers and Cider Limited | Hospitality | 2016 |
| Marek Durkiewicz Driving Service Ltd | Transport & logistics | 2015 |
| Marelake | Professional & scientific | 2023 |
| Margaret Watkinson Ltd | Hospitality | 2023 |
| Margarita Pizza Ltd | Hospitality | 2026 |
| Maria B Evans Estate Agents Limited | Real estate | 2012 |
| Mark a Ashurst Ltd | Professional & scientific | 2019 |
| Mark Evans Technical Services Limited | Information & communication | 2007 |
| Mark J Dixon Ltd | Education | 2022 |
| Mark Johnson Kitchens Ltd | Wholesale & retail | 2018 |