| MSZ Partners Ltd | Wholesale & retail | 2023 |
| MT Batley Limited | Hospitality | 2025 |
| MT Bburn Limited | Hospitality | 2025 |
| MT BFD Limited | Hospitality | 2025 |
| MT Consulting Services Ltd | Information & communication | 2016 |
| MT Cyber Ltd | Other services | 2025 |
| MT Executive Chauffeurs Ltd | Transport & logistics | 2025 |
| MT Halifax Limited | Hospitality | 2025 |
| MT Huddersfield Limited | Hospitality | 2025 |
| MT Ilford Limited | Hospitality | 2025 |
| MT Leeds Limited | Hospitality | 2025 |
| MT Manchester Limited | Hospitality | 2025 |
| MT SFD Limited | Hospitality | 2025 |
| MT UK Traders Ltd | Construction | 2019 |
| MT Wakefield Limited | Hospitality | 2025 |
| Mt&L Ltd | Hospitality | 2025 |
| MTA (BFD) Services Ltd | Information & communication | 2019 |
| MTA Transportation Limited | Transport & logistics | 2025 |
| Mtba Corporation Ltd | Wholesale & retail | 2023 |
| MTC of Bradford Limited | Education | 2019 |
| Mtcw Ltd. | Hospitality | 2019 |
| Mtec Solutions Ltd | Wholesale & retail | 2024 |
| Mtexperts Private Ltd | Wholesale & retail | 2018 |
| Mthanti Limited | Real estate | 2023 |
| MTI Commercial Limited | Real estate | 2026 |
| MTJ6 Limited | Hospitality | 2014 |
| MTK Design & Furnishings Limited | Wholesale & retail | 2024 |
| MTM Drainage & Groundwork’S Ltd | Construction | 2023 |
| MTM Environment Care Limited | Administrative & support | 1988 |
| Mtrhaus Ltd | Wholesale & retail | 2025 |
| Mtrt Enterprises Limited | Real estate | 2023 |
| MTS Medicare Ltd | Health & social care | 2017 |
| Muaviya ZEB Ltd | Wholesale & retail | 2025 |
| Mubarak King of Naan Ltd | Manufacturing | 2025 |
| Mubaraka Healthcare Limited | Wholesale & retail | 2025 |
| Muchets Ltd | Health & social care | 2021 |
| Muddy Boots Leeds Ltd. | Education | 2002 |
| MUF Group Limited | Hospitality | 2022 |
| Muflihoon Traders Ltd | Manufacturing | 2022 |
| Mughal 123 Limited | Hospitality | 2022 |
| Mughal Builders Limited | Construction | 2025 |
| Mughal Fruit & VEG Ltd | Wholesale & retail | 2024 |
| Mughal Poultry Wholesales Ltd | Wholesale & retail | 2026 |
| Mughal Travels Ltd | Transport & logistics | 2026 |
| Muhammad Ajmal Kayani Ltd | Wholesale & retail | 2022 |
| Muhammad Javed Khan Ltd | Wholesale & retail | 2025 |
| Muhammed Designs Ltd | Manufacturing | 2024 |
| Mujji Mart Ltd | Wholesale & retail | 2025 |
| Mujjybarber Ltd | Other services | 2025 |
| Mukesh Architectural Consultancy Ltd | Professional & scientific | 2015 |
| Mulayanickel Ltd | Other services | 2017 |
| Mulberry Finance Ltd | Real estate | 2021 |
| Mullen Solutions Limited | Administrative & support | 2025 |
| Multi Serve Limited | Administrative & support | 2022 |
| Multi Sport Coaching Ltd | Education | 2024 |
| Multibrand Ltd | Wholesale & retail | 2016 |
| Multibrands Techtron Ltd | Wholesale & retail | 2024 |
| Multicultural Bookshop LLP | | 2014 |
| Multidel UK Ltd | Transport & logistics | 2021 |
| Multidisciplinary Connexions Ltd | Health & social care | 2019 |
| Multidollar Victor Limited | Wholesale & retail | 2020 |
| Multifix Limited | Wholesale & retail | 1983 |
| Multiform Cladding Ltd | Construction | 2018 |
| Multilingualism Ltd | Information & communication | 2019 |
| Multiple Logistics Ltd | Transport & logistics | 2024 |
| Multiserver Limited | Real estate | 2025 |
| Multiskillengineering Ltd | Professional & scientific | 2024 |
| Multiskills Service UK Ltd | Manufacturing | 2024 |
| Multiverse Enterprises Ltd | Professional & scientific | 2023 |
| Multiwear Garments Limited | Wholesale & retail | 2025 |
| Mumin Limited | Hospitality | 2002 |
| Mums Makes Ltd | Wholesale & retail | 2023 |
| Mumtaz at Home Ltd | Manufacturing | 2022 |
| Mumtaz Food Products Limited | Financial services | 2008 |
| Mumtaz Foods PLC | Manufacturing | 2012 |
| Mumtaz Premium Limited | Hospitality | 2023 |
| Mumzy's Buckpot Limited | Extraterritorial | 2018 |
| MUN by Mehrunnisa Ltd | Wholesale & retail | 2023 |
| Munawar & Co Ltd | Professional & scientific | 2014 |
| Munch 2 Go Ltd | Hospitality | 2025 |
| Munchkins Wrap Around Ltd | Health & social care | 2023 |
| Mund Consultancy Limited | Financial services | 2011 |
| Muneem Delights Limited | Wholesale & retail | 2020 |
| Muneris Product by Design Ltd | Real estate | 2014 |
| Muntik Limited | Wholesale & retail | 2025 |
| Murada Supplies Limited | Extraterritorial | 1970 |
| Murgy Ltd | Information & communication | 2012 |
| Murray's Grill House Limited | Hospitality | 2019 |
| Murrays Solicitors Limited | Professional & scientific | 2014 |
| Murraystruct Ltd | Construction | 2026 |
| Murshad Properties Ltd | Real estate | 2026 |
| Musa Foods (Bradford) Ltd | Wholesale & retail | 2024 |
| Musa’S Deli Ltd | Hospitality | 2025 |
| Muscle Bound Gym Bradford Ltd | Arts & recreation | 2022 |
| Muscle Bound Gym Clothing Ltd | Wholesale & retail | 2022 |
| Muscle Bound Gym Huddersfield Ltd | Arts & recreation | 2025 |
| Muscle Bound Gym Supplements Limited | Wholesale & retail | 2023 |
| Museum of Colonial Histories and Law Ltd | Education | 2025 |
| Mushtaq Builders Ltd | Construction | 2022 |
| Mushtaq Food Wholesale Ltd | Wholesale & retail | 2021 |