| Musa ISA Company Limited | Wholesale & retail | 2025 |
| Musastrading Ltd | Wholesale & retail | 2022 |
| Muscle Active Limited | Wholesale & retail | 2023 |
| Muscle Foods Limited | Manufacturing | 2014 |
| Musclecoach U.K Ltd | Arts & recreation | 2021 |
| Musclefood Group Ltd | Financial services | 2022 |
| Musclehack Ltd | Wholesale & retail | 2026 |
| Muse Salon Limited | Other services | 2023 |
| Musgroveandco Limited | Wholesale & retail | 2022 |
| Mushay Enterprises Ltd | Wholesale & retail | 2025 |
| Mushinno Ltd | Real estate | 2025 |
| Mushtabar Traders Ltd | Wholesale & retail | 2026 |
| Music Gear Direct Limited | Extraterritorial | 2009 |
| Music Gear Installations Limited | Extraterritorial | 2011 |
| Music Inn Instruments Limited | Wholesale & retail | 2008 |
| Music Learning Collective C.I.C. | Education | 2005 |
| Musical Service Ltd | Arts & recreation | 2013 |
| Musicedit Limited | Information & communication | 2004 |
| Musicworks Midlands | Arts & recreation | 2007 |
| Muslim Burial of Bangladesh Nottingham Ltd | Other services | 2026 |
| Muslim for Hajj & Umra Ltd | Administrative & support | 2024 |
| Muslim Hands Shop Limited | Wholesale & retail | 2026 |
| Muslim Help Supporting the Needy Limited | Administrative & support | 2002 |
| Muslim Womens Organisation Limited | Other services | 2006 |
| Musson Lettings Ltd | Real estate | 2024 |
| Musson Liggins Limited | Professional & scientific | 2002 |
| Musta Builders Limited | Construction | 2025 |
| Mustafa Bhaiji Limited | Health & social care | 2010 |
| Mustafa Imran Ltd | Transport & logistics | 2025 |
| Mustafa's Grill Limited | Hospitality | 2024 |
| Mustard Facades and Windows Ltd | Construction | 2023 |
| Mustard Seed Associates Community Interest Company | Professional & scientific | 2008 |
| Mustard Seed Global Limited | Health & social care | 2013 |
| Mustard Seed Property Network Ltd | Real estate | 2023 |
| Musters Estates Limited | Real estate | 1946 |
| Musters Finance Ltd | Administrative & support | 2025 |
| Musters Gables Management Co (Nottm) Limited | Real estate | 1988 |
| Musters Group Ltd | Construction | 2018 |
| Musters Road Apartments Management Company Limited | Real estate | 2004 |
| Musters Road Limited | Real estate | 2023 |
| Mutantpeptides Ltd | Professional & scientific | 2026 |
| Muted Luxe Ltd | Manufacturing | 2024 |
| Muticare Medical Ltd | Wholesale & retail | 2025 |
| Mutsa Services Ltd | Health & social care | 2013 |
| MV Fabrications Limited | Manufacturing | 2013 |
| MV Lift Group Limited | Financial services | 2021 |
| MV Mohammed Ltd | Transport & logistics | 2022 |
| MVI Construction Limited | Construction | 2024 |
| MVK Holdings Limited | Real estate | 2018 |
| MVK Sports Limited | Other services | 2016 |
| MVR Corporation Ltd | Financial services | 2015 |
| MVR Exchange Ltd | Hospitality | 2019 |
| MVS Investments Limited | Real estate | 2005 |
| MVS Medical Solutions Ltd | Health & social care | 2019 |
| MVT Waste Ltd | Water & waste | 2017 |
| MW AMR Consultancy Ltd | Professional & scientific | 2020 |
| MW Carpentry Projects Limited | Construction | 2015 |
| MW Feronia Services Limited | Manufacturing | 2025 |
| MW Motorgroup Nottingham Limited | Wholesale & retail | 2025 |
| MW Prestige Homes Limited | Construction | 2020 |
| MW Properties NO 14 Limited | Professional & scientific | 2004 |
| MW Properties NO 67 Limited | Professional & scientific | 2007 |
| MW SO Creative Limited | Professional & scientific | 2024 |
| MW Textile Wholesale Limited | Wholesale & retail | 2022 |
| MWA Autos Ltd | Wholesale & retail | 2018 |
| MWA Capital Ltd | Financial services | 2025 |
| Mwana Wezim Ltd | Wholesale & retail | 2025 |
| MWK Flooring Ltd | Wholesale & retail | 2023 |
| MWM Joinery Ltd | Construction | 2010 |
| MWS Leases 1 Ltd | Real estate | 2025 |
| MWS Leases 2 Ltd | Real estate | 2025 |
| Mwsafi Ltd | Wholesale & retail | 2024 |
| MX Hammond Ltd | Transport & logistics | 2022 |
| MX5 Spares Ltd | Wholesale & retail | 2025 |
| My 'LHD' UK Limited | Wholesale & retail | 2008 |
| My Air Source Company Limited | Wholesale & retail | 2024 |
| My Apparel Limited | Manufacturing | 2011 |
| My Biggest Family Ltd | Health & social care | 2019 |
| My Black Seed OIL Co. Ltd | Manufacturing | 2026 |
| My Bluesky Services Limited | Wholesale & retail | 2011 |
| My Boss Online Limited | Information & communication | 2019 |
| My Buff Butlers Ltd | Arts & recreation | 2016 |
| My Build Pro Holdings Limited | Real estate | 2023 |
| My Build Pro Ltd | Construction | 2022 |
| My Burrow Ltd | Real estate | 2021 |
| My Business Buddies Ltd | Professional & scientific | 2025 |
| My Cars Midlands Ltd | Transport & logistics | 2026 |
| My Cars Nottingham Limited | Transport & logistics | 2014 |
| My Confidence Ltd | Other services | 2025 |
| My Creations Ltd | Wholesale & retail | 2020 |
| My Cutprice Ltd | Wholesale & retail | 2024 |
| My Fairy Gift Mother Limited | Information & communication | 2008 |
| My Finance Function Ltd | Professional & scientific | 2019 |
| My Fitness Local Limited | Arts & recreation | 2012 |
| My GAF Properties Ltd | Real estate | 2023 |
| My Gaff Limited | Construction | 2000 |
| My Garage Nottingham Ltd | Wholesale & retail | 2017 |
| My Global Ltd | Wholesale & retail | 2025 |
| My Gratitude Story CIC | Education | 2026 |
| My Green Crayons Ltd | Information & communication | 2024 |