| MH Software Ltd | Information & communication | 2023 |
| MH Supply Chain Consulting Ltd | Professional & scientific | 2026 |
| MH Transport Leeds Ltd | Transport & logistics | 2022 |
| MH Wills and Estate Planning Ltd | Professional & scientific | 2025 |
| MH1 Foods Limited | Hospitality | 2024 |
| MH10 Limited | Arts & recreation | 2022 |
| MH2 Ltd | Other services | 2025 |
| MHA Civil Engineering Ltd. | Professional & scientific | 2014 |
| MHA Partners Limited | Professional & scientific | 2021 |
| MHA Property Developer Limited | Real estate | 2020 |
| Mhac Construction Ltd | Construction | 2012 |
| MHB Referrals Ltd | Professional & scientific | 2024 |
| Mheuran Hydro Ltd | Energy | 2017 |
| MHG Bond 2 Ltd | Financial services | 2019 |
| Mhhj Ltd | Real estate | 2026 |
| MHJ Associates Limited | Health & social care | 2014 |
| MHJ Yorkshire Ltd | Construction | 2022 |
| Mhlanga Limited | Health & social care | 2013 |
| MHM Pension Services Ltd | Administrative & support | 2016 |
| MHM Trustee Services Ltd | Administrative & support | 2016 |
| Mhone Cleaning Services Ltd | Administrative & support | 2025 |
| MHP Properties Limited | Construction | 2018 |
| MHR LS10 Ltd | Hospitality | 2025 |
| MHR1 Property Ltd | Real estate | 2025 |
| MHS Lettings Ltd | Real estate | 2013 |
| MHS-ENTERPRISE1 Limited | Wholesale & retail | 2022 |
| Mhse Ltd | Other services | 2026 |
| Mhsv Properties Ltd | Construction | 2024 |
| MHT Capital Limited | Real estate | 2023 |
| MHT Enterprises Limited | Administrative & support | 2002 |
| Mhxb Limited | Hospitality | 2019 |
| MI Chlorine Ltd | Manufacturing | 2014 |
| MI Contractor Limited | Professional & scientific | 2014 |
| MI Hotels (Yorkshire) Ltd | Hospitality | 2022 |
| MI Property Network Limited | Administrative & support | 2014 |
| MI Search Limited | Administrative & support | 2009 |
| MI Takeaway (Yorkshire) Ltd | Hospitality | 2023 |
| Mi-Time Wellbeing Ltd | Education | 2001 |
| MIA Boujida Ltd | Administrative & support | 2023 |
| MIA Consultancy Limited | Wholesale & retail | 2023 |
| MIA Education & Training Limited | Education | 2018 |
| MIA Isabelle Artistry Ltd | Other services | 2025 |
| MIA Properties Leeds Ltd | Real estate | 2011 |
| MIA Property Group Limited | Real estate | 2024 |
| Miah Motors Specialist Limited | Wholesale & retail | 2024 |
| Miah Renovations Ltd | Construction | 2025 |
| Miah Spice Leeds Ltd | Hospitality | 2025 |
| Miakoda Homes Ltd | Real estate | 2025 |
| Miamil Properties Ltd | Real estate | 2024 |
| Mian Audio Distribution Ltd | Wholesale & retail | 2018 |
| Mian Mani Ltd | Hospitality | 2025 |
| Miasaasb Properties Group Ltd | Real estate | 2026 |
| MIB Oakwood Ltd | Wholesale & retail | 2017 |
| Miba Properties Ltd | Real estate | 2020 |
| Mibbas Ltd | Wholesale & retail | 2022 |
| Mibk Health Care Ltd | Health & social care | 2014 |
| Mica Enhanced Limited | Education | 2025 |
| Micare Industrial Supply UK Ltd | Wholesale & retail | 2025 |
| Micare Scandinavia Limited | Wholesale & retail | 2025 |
| Mich & PAL Ltd | Public administration | 2025 |
| Michael Adams Web Development Limited | Information & communication | 2011 |
| Michael Anthony Rendering & Plastering Ltd | Construction | 2024 |
| Michael Cater Holdings Limited | Real estate | 2003 |
| Michael Flannery (Building Contractors) Limited | Construction | 1999 |
| Michael Heath Solicitors Limited | Professional & scientific | 2014 |
| Michael Hulme-Vickerstaff | Financial services | 2009 |
| Michael Pinder Consultancy Ltd | Professional & scientific | 2024 |
| Michael Robson Osteopathy Ltd | Health & social care | 2026 |
| Michael Shaw Associates Limited | Professional & scientific | 2015 |
| Michael Spink Ltd | Information & communication | 2025 |
| Michael Steel and Co (Plant and Machinery) Limited | Professional & scientific | 2008 |
| Michael Steel Limited | Professional & scientific | 1979 |
| Michael Wainwright Plumbing Ltd | Construction | 2025 |
| Michael Walls Decorating Ltd | Construction | 2023 |
| Michael Wheatley Construction Limited | Construction | 2014 |
| Michael Wheatley Finance Limited | Financial services | 2014 |
| Michael Wheatley Management Limited | Construction | 2010 |
| Michael Wheatley Property Limited | Real estate | 2014 |
| Michael's Bakery & Coffee Ltd | Wholesale & retail | 2026 |
| Michael's Waste Removals Ltd | Water & waste | 2022 |
| Michal Idzikowski Ltd | Transport & logistics | 2017 |
| Michal Pawlikowski Limited | Construction | 2015 |
| Michanaliele Ltd | Real estate | 2019 |
| Michele Marsland PR Ltd | Professional & scientific | 2025 |
| Michelle Dorsett Brows & Beauty Ltd | Other services | 2019 |
| Michelle Whitford Limited | Health & social care | 2012 |
| Michelsberg Tailoring Limited | Manufacturing | 2009 |
| Michlen Ltd | Wholesale & retail | 2024 |
| Michmel Limited | Other services | 2021 |
| Michmel X Limited | Health & social care | 2016 |
| Mick Webster & Co | Arts & recreation | 2006 |
| Micklefield Properties Limited | Construction | 2000 |
| Micklethwaite Management Company Limited | Households | 2003 |
| Mickletown Epicurean Services Limited | Hospitality | 2025 |
| Micky Mudd Co Limited | Administrative & support | 2017 |
| Mico Lighting Limited | Wholesale & retail | 1973 |
| Micro P Ltd | Professional & scientific | 1981 |
| Micro P Mobile Limited | Professional & scientific | 2008 |
| Micro Peripherals Ltd | Professional & scientific | 1988 |
| MICRO2 Ltd | Professional & scientific | 2020 |