| MST General Services Ltd | Public administration | 2022 |
| MT Airport Transfer Ltd | Transport & logistics | 2026 |
| Much More Limited | Wholesale & retail | 2009 |
| Mucy Ltd | Wholesale & retail | 2019 |
| Muddsticks Limited | Agriculture & fishing | 2005 |
| Mufira Limited | Wholesale & retail | 2018 |
| Mukesh KUMAR1 Ltd | Construction | 2025 |
| Multani Accommodation Ltd | Real estate | 2020 |
| Multani Assets Ltd | Real estate | 2023 |
| Multani Building Services Limited | Construction | 2016 |
| Multani Corporation Ltd | Financial services | 2021 |
| Multani Designs Kitchen & Bedrooms Ltd | Administrative & support | 2026 |
| Multani Development Ltd | Construction | 2021 |
| Multani Estates Ltd | Real estate | 2022 |
| Multani Fitted Kitchen and Bedroom Ltd | Construction | 2026 |
| Multani Interiors Ltd | Construction | 2022 |
| Multani Partnership LLP | | 2024 |
| Multani Properties Ltd | Real estate | 2020 |
| Multani Trades Ltd | Real estate | 2023 |
| Multanilondon Limited | Transport & logistics | 2025 |
| Multi Channel Trading Ltd | Wholesale & retail | 2024 |
| Multi Logistic Solutions UK Limited | Transport & logistics | 2018 |
| Multi Master Ltd | Construction | 2025 |
| Multi Supplies Limited | Wholesale & retail | 2022 |
| Mumkin Education Limited | Education | 2022 |
| Mumubox Logistics Limited | Transport & logistics | 2025 |
| Munch Kingz Ltd | Hospitality | 2019 |
| Munde Home Limited | Wholesale & retail | 2019 |
| Munidal Limited | Wholesale & retail | 2026 |
| Munir Ahmed Foundation | Education | 2026 |
| Muntaha's Hub Ltd | Wholesale & retail | 2020 |
| Muscle Bunny Limited | Wholesale & retail | 2015 |
| Muskani UK Ltd | Wholesale & retail | 2025 |
| Musknoud London Ltd | Wholesale & retail | 2025 |
| Mussa Sons and Investments Limited | Construction | 2012 |
| Mustafa Food Corner Ltd | Wholesale & retail | 2025 |
| Mustafa Foods Ltd | Wholesale & retail | 2025 |
| Mustafa Jewelers Limited | Wholesale & retail | 2024 |
| Mustafa Mart Ltd | Wholesale & retail | 2025 |
| Muthoot Finance UK Limited | Administrative & support | 2009 |
| Muthoot Global UK Ltd | Administrative & support | 2007 |
| Muthoot M George Central London Real Estate Ltd | Hospitality | 2017 |
| Muttibrother Ltd | Real estate | 2024 |
| Mvle Ltd | Wholesale & retail | 2025 |
| MWA Global Investments Ltd | Real estate | 2025 |
| MWA Global Ltd | Wholesale & retail | 2019 |
| My Airport Ride Ltd | Transport & logistics | 2023 |
| My Business Travel Limited | Administrative & support | 2025 |
| My Car Management Ltd | Information & communication | 2020 |
| My Cheeky Oven Ltd | Wholesale & retail | 2025 |
| My Choice Garments Ltd | Wholesale & retail | 2023 |
| My Cricket Shop Ltd | Wholesale & retail | 2022 |
| My Data Analyst Ltd | Information & communication | 2010 |
| My Dream Home Construction Limited | Construction | 2016 |
| My Dream Move Limited | Real estate | 2019 |
| My Dream Ukbd Ltd | Transport & logistics | 2024 |
| My Holiday Guide Ltd | Administrative & support | 2020 |
| My IT Support Team Ltd | Information & communication | 2022 |
| My Kitchen & Bedrooms Limited | Construction | 2020 |
| My New Language Ltd | Wholesale & retail | 2018 |
| My Park and Ride Heathrow Limited | Administrative & support | 2025 |
| My Style UK Fashion Ltd | Wholesale & retail | 2025 |
| MYB Clothing Ltd | Extraterritorial | 2017 |
| Myer Fabrics Ltd | Wholesale & retail | 2025 |
| Myfone (UK) Limited | Wholesale & retail | 2012 |
| Myfone Accessories Limited | Wholesale & retail | 2009 |
| Mygadgetstore Limited | Wholesale & retail | 2019 |
| Myks Trading Limited | Financial services | 2025 |
| MYM Motors Ltd | Wholesale & retail | 2019 |
| Mypropertymagnet Ltd | Real estate | 2025 |
| Myso UK Ltd | Wholesale & retail | 2026 |
| Mystoree.Com Ltd | Information & communication | 2020 |
| Mythic Minds CIC | Health & social care | 2024 |
| MZ & RS Ventures Ltd | Financial services | 2022 |
| MZ Jewellers Ltd | Wholesale & retail | 2018 |
| MZ Plumbing & Heating Services Ltd | Construction | 2024 |
| N & W Subsidiary Ltd | Extraterritorial | 2023 |
| N B R (UK) Limited | Transport & logistics | 2004 |
| N G R Global Limited | Health & social care | 2009 |
| N Kapoor Consultants Ltd | Real estate | 2011 |
| N Mann Investment Ltd | Real estate | 2026 |
| N S K Developers Ltd | Wholesale & retail | 2022 |
| N.Abbas Property Group Limited | Real estate | 2024 |
| N.I.C Window Cleaning Ltd | Administrative & support | 2026 |
| N.M. Beauty Supply Ltd | Wholesale & retail | 2006 |
| N.Samuel Limited | Information & communication | 2016 |
| N012 Aesthetic Avenue Ltd | Health & social care | 2023 |
| N1 Techno Ltd | Wholesale & retail | 2025 |
| N2L Management Ltd | Households | 2026 |
| Naanwalla Ltd | Hospitality | 2021 |
| Naawab Collection Ltd | Wholesale & retail | 2019 |
| Naawab Properties Ltd | Real estate | 2026 |
| Naaz Enterprise Ltd | Wholesale & retail | 2026 |
| Nabatiya Limited | Wholesale & retail | 2025 |
| Nachi Investment Ltd | Financial services | 2018 |
| Nagina and West London Properties Ltd | Real estate | 2023 |
| Nagina BED & Breakfast Ltd | Real estate | 2023 |
| Nagina Jewellers Limited | Wholesale & retail | 2024 |
| Nagma Ltd | Hospitality | 2016 |
| Nagpal Real Estate Ltd | Real estate | 2023 |