| MH & K Dadabhai Ltd | Real estate | 2016 |
| MH Accountancy Services Limited | Professional & scientific | 2001 |
| MH Cleaning Solutions Limited | Other services | 2006 |
| MH Construction & Home Maintenance Ltd | Construction | 2022 |
| MH Consulting (East Midlands) Ltd | Health & social care | 2025 |
| MH Empire Holdings Ltd | Financial services | 2022 |
| MH Exports Limited | Wholesale & retail | 2018 |
| MH Garage and MOT Centre Ltd | Wholesale & retail | 2024 |
| MH Health and Fitness Ltd | Arts & recreation | 2015 |
| MH Health and Wellbeing Limited | Arts & recreation | 2020 |
| MH Integrated Solutions Limited | Information & communication | 2015 |
| MH Maan Ltd | Wholesale & retail | 2023 |
| MH Mann Property Ltd | Real estate | 2024 |
| MH Presentations Limited | Hospitality | 2023 |
| MH Skyline Ltd | Information & communication | 2025 |
| MH Trading Leic Ltd | Manufacturing | 2026 |
| Mh&R Limited | Professional & scientific | 2019 |
| MHA Fittings Ltd | Construction | 2018 |
| MHA Global Trading Ltd | Manufacturing | 2022 |
| MHA Investments Ltd | Real estate | 2021 |
| MHA Property Group Ltd | Real estate | 2021 |
| Mhdc Properties Limited | Real estate | 2026 |
| MHG Traders Ltd | Wholesale & retail | 2025 |
| MHI Investment Ltd | Real estate | 2025 |
| MHK Electrical Contractors Ltd | Construction | 2015 |
| MHK Investments Ltd | Construction | 2017 |
| MHK Property Ltd | Real estate | 2024 |
| MHL Capital Limited | Real estate | 2022 |
| Mhlp Trading LLP | | 2013 |
| Mhnp Limited | Professional & scientific | 2004 |
| MHO Trading Ltd | Wholesale & retail | 2023 |
| Mhofucraft Carpentry Joinery & Building Maintenance Ltd | Construction | 2024 |
| MHP Power Engineering Ltd | Manufacturing | 2025 |
| MHP Transport Limited | Transport & logistics | 2025 |
| MHP Wholesales Ltd | Wholesale & retail | 2024 |
| MHS Property LLP | | 2023 |
| Mhss Solutions Ltd | Health & social care | 2013 |
| MHT Global Limited | Wholesale & retail | 2025 |
| Mhtsg Ltd | Construction | 2013 |
| MHW Financial Solutions Ltd | Financial services | 2018 |
| Mhzh Ltd | Public administration | 2024 |
| MI Accountancy Services Ltd | Extraterritorial | 2022 |
| MI Data UK Limited | Information & communication | 2026 |
| MI Enterprise Leicester Limited | Wholesale & retail | 2022 |
| MI Fast Limited | Administrative & support | 2025 |
| MI Healthcare Holding Limited | Financial services | 2020 |
| MI Healthcare Property 1 Limited | Real estate | 2025 |
| MI Life Care Services Limited | Health & social care | 2009 |
| MI Life Investment Limited | Financial services | 2013 |
| MI Logistics Limited | Transport & logistics | 2003 |
| MI Lounge UK Ltd | Hospitality | 2025 |
| MI Pharmacy Limited | Wholesale & retail | 2011 |
| MI Property Estate Limited | Real estate | 2013 |
| MI3 Cargo Ltd | Manufacturing | 2025 |
| MI3 Group Ltd | Financial services | 2026 |
| MIA Auto Ltd | Wholesale & retail | 2026 |
| MIA International Ltd | Wholesale & retail | 2026 |
| MIA Marketplace Limited | Arts & recreation | 2019 |
| MIA Medical Care Ltd | Health & social care | 2013 |
| Mia&Mason Real Estate Ltd | Real estate | 2025 |
| Miaa Investments Limited | Real estate | 2022 |
| Miah Enterprice Group Ltd | Wholesale & retail | 2017 |
| MIAH100786 Limited | Real estate | 2016 |
| Miami Sun Solarium Limited | Other services | 2017 |
| Miamisun Sunbeds Limited | Other services | 2019 |
| Mian Locums Ltd | Health & social care | 2023 |
| Miar Consulting Limited | Information & communication | 2014 |
| Michael Cannon Limited | Administrative & support | 2025 |
| Michael Cawley Design Ltd | Professional & scientific | 2020 |
| Michael Grundy Jewellers Limited | Wholesale & retail | 2015 |
| Michael Hill Partnership Limited | Professional & scientific | 2014 |
| Michael John Flooring Ltd | Wholesale & retail | 2013 |
| Michael Lister Limited | Administrative & support | 1996 |
| Michael Powles Limited | Wholesale & retail | 1992 |
| Michael Smith Switchgear Limited | Manufacturing | 1985 |
| Michael Spriggs Agencies Limited | Administrative & support | 2002 |
| Michael Wheat Pond & Garden Design Ltd | Administrative & support | 2017 |
| Michael's Joinery Ltd | Construction | 2024 |
| Michaels Estates Ltd | Real estate | 2020 |
| Michaila Tyson Ltd | Other services | 2022 |
| Michal Kania Ltd | Transport & logistics | 2020 |
| Michel Fonde Ltd | Professional & scientific | 2019 |
| Michelcombe Chief Ltd | Transport & logistics | 2014 |
| Michu Foods Limited | Other services | 2025 |
| Mick Davis Rewinds Limited | Other services | 1986 |
| Mick Parmar Limited | Construction | 2005 |
| Micka Motors Ltd | Wholesale & retail | 2020 |
| Mickey's Sports Activities CIC | Education | 2024 |
| Mickleby Logistics Ltd | Transport & logistics | 2014 |
| Micompters Limited | Administrative & support | 2024 |
| Micoud Ltd | Professional & scientific | 2022 |
| Micro Creations Ltd | Information & communication | 2010 |
| Micro Pneumatics Limited | Manufacturing | 2004 |
| Micro Telecom Ltd | Professional & scientific | 2012 |
| Micro-Fresh Limited | Administrative & support | 2011 |
| Microbiology Learning Online Ltd | Education | 2021 |
| Microfarad Tech Ltd | Wholesale & retail | 2022 |
| Microkerf Limited | Manufacturing | 2003 |
| Micron Precision Limited | Manufacturing | 2003 |
| Microsis Limited | Information & communication | 2011 |