| Mimaa Musa Ltd | Professional & scientific | 2022 |
| Mimah Limited | Professional & scientific | 2018 |
| Mimdarji Limited | Wholesale & retail | 2021 |
| Mimma's Limited | Manufacturing | 2024 |
| MIN KEE Foods (UK) Limited | Wholesale & retail | 2021 |
| Mina Foods Ltd | Wholesale & retail | 2025 |
| Minamart Ltd | Wholesale & retail | 2025 |
| Minat Consultancy Limited | Public administration | 2023 |
| Minat Healthcare Ltd | Professional & scientific | 2021 |
| Mind and Motion Clapham Limited | Arts & recreation | 2024 |
| Mind and Motion Forest Hill Ltd | Arts & recreation | 2026 |
| Mind and Motion Ltd | Arts & recreation | 2023 |
| Mind Safety Matters Ltd | Construction | 2025 |
| Mind's EYE Description Services Limited | Information & communication | 2010 |
| Mind-Star Executive Development Ltd | Professional & scientific | 2003 |
| Mindari Limited | Professional & scientific | 2026 |
| Mindau Engineering Limited | Administrative & support | 2016 |
| Mindbuilt Consultants Ltd | Manufacturing | 2024 |
| Mindful ME Online Ltd | Education | 2025 |
| Mindful Media Group Ltd | Professional & scientific | 2023 |
| Mindsmiles Ltd | Information & communication | 2025 |
| Mindspark AI Ltd | Information & communication | 2023 |
| Mined Limited | Administrative & support | 2021 |
| Minerva Connect Limited | Wholesale & retail | 2023 |
| Minerva Hvac-R Limited | Manufacturing | 2015 |
| Minerva Photographics Limited | Manufacturing | 1983 |
| Minga Coffee Ltd | Wholesale & retail | 2025 |
| Minha VEZ Ltd | Other services | 2022 |
| Mini Mart (Bolton) Ltd | Wholesale & retail | 2015 |
| Mini Minds Matter UK Ltd | Education | 2021 |
| Minimal Boutique Ltd | Wholesale & retail | 2024 |
| Minimize Your Bills Limited | Wholesale & retail | 2024 |
| Minkies Limited | Real estate | 2006 |
| Minoan Supplies Limited | Construction | 2019 |
| Minos Logistics Ltd | Transport & logistics | 2023 |
| Mint and Marigold Limited | Other services | 2018 |
| Mint Chemicals Ltd | Professional & scientific | 2024 |
| Mint Conversions Ltd | Construction | 2018 |
| Mintclean Trading Ltd | Other services | 2019 |
| Minutes Matter UK Ltd | Wholesale & retail | 2023 |
| MIO Italia Limited | Hospitality | 2025 |
| Miob Educational Services Ltd | Education | 2024 |
| MIP Optics Ltd | Health & social care | 2022 |
| Mipal Properties Limited | Administrative & support | 2020 |
| Mipal Solutions Limited | Information & communication | 2011 |
| Miqra Trade Ltd | Wholesale & retail | 2023 |
| Miraal Group Ltd | Wholesale & retail | 2025 |
| Mirageprism Ltd | Wholesale & retail | 2019 |
| Miramar Limited | Information & communication | 2019 |
| Miranda Tiling Limited | Construction | 2021 |
| Mirko Media Limited | Hospitality | 2015 |
| Miro GRF Limited | Real estate | 2025 |
| Mirror Finish (Bradley Fold) Ltd | Wholesale & retail | 2018 |
| Mirror King Ltd | Manufacturing | 2022 |
| Mirrornest Ltd | Professional & scientific | 2025 |
| Mirza Autos & Body Repair Ltd | Wholesale & retail | 2025 |
| MIS Business Solutions Limited | Real estate | 2006 |
| Misconceptions Limited | Other services | 2022 |
| Misha Property Ltd | Real estate | 2022 |
| Mishi Traders Ltd | Wholesale & retail | 2023 |
| Misp Group Holdings Ltd | Financial services | 2024 |
| Misp Limited | Wholesale & retail | 2016 |
| Miss Bamboo Ltd | Wholesale & retail | 2011 |
| Miss Katie's Dance Academy Ltd | Other services | 2018 |
| Miss Lemon Cafe Ltd | Hospitality | 2025 |
| Miss Pancake Ltd | Hospitality | 2024 |
| Miss Sarah's Forest School Limited | Education | 2025 |
| Miss-Fit Ltd | Arts & recreation | 2021 |
| Mission Darts Limited | Manufacturing | 2026 |
| Mission of Caring CIC | Health & social care | 2024 |
| Mission Vent Limited | Construction | 2020 |
| Missra Ltd | Professional & scientific | 2025 |
| Mistry Brothers Limited | Hospitality | 1993 |
| Mistry Brothers Rentals Limited | Real estate | 2021 |
| Misty Glass Limited | Construction | 2011 |
| MIT Herz Limited | Health & social care | 2025 |
| Mitchell & Davis Construction Limited | Construction | 2008 |
| Mitchell Abercrombie Limited | Wholesale & retail | 2006 |
| Mitchell Technology Limited | Information & communication | 2021 |
| Mitha BDS Holdings Ltd | Financial services | 2026 |
| Mitha BDS Limited | Health & social care | 2007 |
| Mithacorp Limited | Professional & scientific | 2017 |
| Mithai Box Dessert Ltd | Manufacturing | 2025 |
| Mitre Hotel Manchester Limited | Wholesale & retail | 2019 |
| Mits 4U Limited | Information & communication | 2016 |
| MIWSEVENTY7 Ltd | Administrative & support | 2025 |
| Mixongo Ltd | Manufacturing | 2024 |
| Miyco Ltd | Wholesale & retail | 2026 |
| Mizm Ltd | Wholesale & retail | 2020 |
| MJ Agencies Ltd | Wholesale & retail | 2011 |
| MJ and K Limited | Wholesale & retail | 2023 |
| MJ Building Constructions Ltd | Construction | 2022 |
| MJ Capital Management Limited | Real estate | 2020 |
| MJ Clinical Training Ltd | Health & social care | 2020 |
| MJ Co (Property) Limited | Real estate | 2018 |
| MJ Couriers NW Ltd | Transport & logistics | 2025 |
| MJ Developers Ltd | Wholesale & retail | 2025 |
| MJ Gold Center Limited | Wholesale & retail | 2018 |
| MJ Kellett Painters & Decorators Limited | Construction | 2014 |
| MJ Mobile Solutions Ltd | Wholesale & retail | 2022 |