| MAC and Co Accountants Ltd | Professional & scientific | 2014 |
| MAC Empiro Limited | Other services | 2026 |
| MAC Glazing Limited | Other services | 2010 |
| MAC Windows Limited | Other services | 2010 |
| Mace Contracting Services Limited | Construction | 2026 |
| Mace Trade Limited | Wholesale & retail | 2026 |
| Maclarty Software Limited | Information & communication | 2010 |
| Macro Software Solutions Ltd | Information & communication | 2015 |
| MAD Sprouts Ltd | Agriculture & fishing | 2022 |
| Mada Bent Ltd | Wholesale & retail | 2019 |
| Madan Enterprises Ltd | Wholesale & retail | 2014 |
| Madena Construction Ltd | Construction | 2026 |
| Madhan Enterprises Limited | Wholesale & retail | 2025 |
| Madhan Limited | Real estate | 2014 |
| Madhan Traders Limited | Wholesale & retail | 2024 |
| Madhouse Furniture Limited | Wholesale & retail | 2014 |
| Madhulika Couture & Co Ltd | Wholesale & retail | 2026 |
| Madina Biryani House Limited | Hospitality | 2022 |
| Madina Private Limited | Information & communication | 2013 |
| Madras Coffee House Limited | Hospitality | 2025 |
| Madras Flavours (Hounslow) Ltd | Wholesale & retail | 2024 |
| Madras Flavours Catering Limited | Hospitality | 2025 |
| Madras Flavours Holdings Limited | Professional & scientific | 2024 |
| Madras Flavours Kitchens Ltd | Hospitality | 2024 |
| Madras Spicy Ltd | Hospitality | 2023 |
| Maevin Investment Ltd | Real estate | 2025 |
| Magenta Employment Services Ltd | Administrative & support | 2018 |
| Magenta Security Limited | Administrative & support | 2023 |
| Magenta Training Services Ltd | Administrative & support | 2018 |
| Magic by G&J Limited | Wholesale & retail | 2017 |
| Magic Fade Ltd | Wholesale & retail | 2022 |
| Magical Service Group Ltd | Hospitality | 2021 |
| MAGMA3C Limited | Information & communication | 2022 |
| Magna Foodservice Limited | Wholesale & retail | 2013 |
| Magna Logo's Ltd | Administrative & support | 2020 |
| Magna One Ltd | Wholesale & retail | 2021 |
| Magna Portfolio Ltd | Real estate | 2021 |
| Magnificent Car Repairs Ltd | Wholesale & retail | 2024 |
| Magnus Capital Management Ltd | Professional & scientific | 2024 |
| Mahadev Singh Ltd | Wholesale & retail | 2014 |
| Mahadeva Investment LLP | | 2014 |
| Mahadeva Properties Ltd | Real estate | 2018 |
| Mahadeva Services Ltd | Administrative & support | 2015 |
| Mahai Hauliers Ltd | Transport & logistics | 2025 |
| Mahakal Builders Ltd | Construction | 2026 |
| Mahal Developments Ltd | Construction | 2020 |
| Mahal Estate Homes Ltd | Real estate | 2023 |
| Mahal Homes and Investments Ltd | Real estate | 2022 |
| Mahal Partnership Ltd | Real estate | 2018 |
| Mahal Roofing & Construction Ltd | Construction | 2020 |
| Mahal Services Limited | Real estate | 1987 |
| Maheera Enterprise Ltd | Wholesale & retail | 2019 |
| Mahie Son's Electrical Limited | Construction | 2016 |
| Mahmotra Investments Limited | Real estate | 2017 |
| MAI Style Ltd | Construction | 2020 |
| Maicam Ltd | Health & social care | 2025 |
| MAID4SECURITY Limited | Administrative & support | 2019 |
| Mainline Logistics Ltd | Transport & logistics | 2026 |
| Maison Auréa Ltd | Wholesale & retail | 2025 |
| Maison Dimova Limited | Manufacturing | 2026 |
| Maja Hairdressers Limited | Other services | 2010 |
| Majestic Hospitality Service Ltd | Construction | 2025 |
| Majestic Revolution Ltd | Construction | 2018 |
| Majid and Sons (Properties) Ltd | Real estate | 2018 |
| MAK & Co Solicitors Limited | Professional & scientific | 2017 |
| MAK & Partners Ltd. | Professional & scientific | 2015 |
| MAK Enterprise UK Limited | Wholesale & retail | 2013 |
| Maka TIK Naka Limited | Hospitality | 2024 |
| Makann Ltd | Wholesale & retail | 2025 |
| Makcur Laboratories UK Limited | Extraterritorial | 2019 |
| Make IT Look Ltd | Information & communication | 2026 |
| Make Jesus Famous Ltd | Health & social care | 2025 |
| Make Services Limited | Information & communication | 2026 |
| Makkah and Madinah Travels Ltd | Administrative & support | 2025 |
| Makol & Makol Ltd | Real estate | 2017 |
| Maks Management Limited | Information & communication | 2012 |
| Malachite Counselling CIC | Health & social care | 2019 |
| Malaika Establishments Ltd | Wholesale & retail | 2023 |
| Malayeka Beauty Ltd | Other services | 2025 |
| Malaysian INK Limited | Arts & recreation | 2024 |
| Maleface Limited | | 1968 |
| Malhi Construction Ltd | Construction | 2023 |
| Malhi Financial Services Ltd | Financial services | 2014 |
| Malhotra Brothers Limited | Real estate | 2014 |
| Malhotra Millennium House Limited | Real estate | 2001 |
| Maliha Advisory and Consultancy Ltd | Professional & scientific | 2023 |
| Malik Global Services Limited | Information & communication | 2014 |
| Malik Legacy Homes Ltd | Real estate | 2025 |
| Maliks & Maliks Ltd | Hospitality | 2020 |
| Malik’S Momentum Co Ltd | Transport & logistics | 2025 |
| Malor Consulting Limited | Professional & scientific | 2021 |
| Malotra Food & Wine Ltd | Wholesale & retail | 2026 |
| Maltese Anti-Corruption Establishment Limited | Other services | 2023 |
| Mama and Araiz Limited | Wholesale & retail | 2026 |
| Mama’S Driving School Ltd | Education | 2022 |
| Manansh Investment Ltd | Real estate | 2017 |
| Manas Consultancy Limited | Information & communication | 2015 |
| Manday Bath Limited | Real estate | 2021 |
| Mandy Haulage Ltd | Transport & logistics | 2025 |
| Maneamihaita Ltd | Transport & logistics | 2021 |