| MR Plus Properties Ltd | Real estate | 2021 |
| MRS Wedding Planner Ltd | Other services | 2014 |
| Mrsp Media Limited | Wholesale & retail | 2023 |
| MS & SR Consultancy Limited | Information & communication | 2014 |
| MS Gliding Capital Ltd | Other services | 2023 |
| MSH Foods Ltd | Hospitality | 2022 |
| MT Saving Ltd | Other services | 2025 |
| MTS International Traders Ltd | Wholesale & retail | 2016 |
| Much Realty Ltd | Real estate | 2025 |
| Multibrand Marketing Ltd | Professional & scientific | 2025 |
| Multitech Recruitment Services Ltd. | Administrative & support | 2017 |
| Munay Properties Ltd | Real estate | 2021 |
| Mundos E People & Business School Ltd | Administrative & support | 2020 |
| Mundus Representation Ltd | Professional & scientific | 2019 |
| Musical & More Group Ltd | Professional & scientific | 2021 |
| Mutual Attraction Limited | Other services | 2011 |
| MWM Global Ltd | Financial services | 2021 |
| MWO Group Ltd. | Financial services | 2021 |
| My Inspired Innovations Ltd | Information & communication | 2019 |
| Mykmem Ltd | Professional & scientific | 2025 |
| Myra Services Ltd | Health & social care | 2022 |
| N&N Group Holdings Ltd | Real estate | 2024 |
| NAB Wares Ltd | Transport & logistics | 2020 |
| Nalan-M Limited | Hospitality | 2026 |
| Namor Worldwide Ltd | Professional & scientific | 2023 |
| Nash Growth Ltd | Other services | 2024 |
| Nath Contractors Ltd | Construction | 2025 |
| Nath Real Estates Limited | Real estate | 2023 |
| Nationwide Plant Glazing Limited | Extraterritorial | 1990 |
| Natur 1 Ltd | Other services | 2023 |
| Natural Health Magazine Ltd | Professional & scientific | 2024 |
| NAU Investments Limited | Real estate | 2025 |
| Navrang Trading Limited | Wholesale & retail | 2025 |
| Navson (UK) Limited | Wholesale & retail | 2020 |
| Navson Group Limited | Financial services | 2020 |
| Navson Ltd | Wholesale & retail | 2002 |
| Navson Paper Limited | Manufacturing | 2022 |
| Nawabi Holdings Ltd | Real estate | 2026 |
| Nayali Healthcare Services UK Ltd | Wholesale & retail | 2023 |
| Ndelta Ltd | Real estate | 2025 |
| Neil HK Consulting Ltd | Professional & scientific | 2026 |
| Nena Real Estate Ltd | Real estate | 2024 |
| Neobim Ltd | Information & communication | 2024 |
| Neocim Ltd | Professional & scientific | 2022 |
| Neomentum Ltd | Real estate | 2025 |
| Network Nurseries Limited | Education | 1989 |
| Network Synergies Consulting Ltd | Information & communication | 2026 |
| Network Synergies UK Ltd | Real estate | 2024 |
| Neva Holdings Limited | Real estate | 2021 |
| Never HAD a Chance Ltd | Information & communication | 2023 |
| New Customer Acquisition Ltd | Professional & scientific | 2020 |
| New Idyll Ltd | Professional & scientific | 2023 |
| New Look Build Services Ltd | Construction | 2017 |
| New Milton Care Home Holdings Limited | Professional & scientific | 2019 |
| New Milton Care Home Limited | Financial services | 2017 |
| New Milton Care Limited | Health & social care | 2019 |
| New Talent ERA Ltd | Professional & scientific | 2023 |
| New Typhoon Holdings Limited | Real estate | 2020 |
| New Typhoon Limited | Financial services | 2013 |
| Newlands Management Ltd | Real estate | 2003 |
| Newlands of Stow Ltd | Health & social care | 2012 |
| Newpos Tech Ltd | Information & communication | 2025 |
| Newtrinity Limited | Information & communication | 2023 |
| Nexanova Studios Ltd | Other services | 2023 |
| Nexawave Group Ltd | Information & communication | 2019 |
| Next AGE Technologies Ltd | Information & communication | 2006 |
| Next Door Living Ltd | Real estate | 2025 |
| Next Generation Renovation Ltd | Real estate | 2019 |
| Next Media 360 Ltd | Information & communication | 2021 |
| Next Step Real Estate Ltd | Real estate | 2023 |
| NGA Holding & Investment UK Ltd | Professional & scientific | 2019 |
| Ngtts Ltd | Information & communication | 2019 |
| Nhes Care Limited | Health & social care | 2017 |
| Niapekelah Trading Limited | Construction | 2022 |
| Nibu Properties Ltd | Real estate | 2018 |
| Nightingales Homecare Ltd | Health & social care | 2020 |
| Nijjar Group Holdings Limited | Real estate | 2026 |
| NIK Copywriting Limited | Administrative & support | 2024 |
| Nimma Real Estate Ltd | Real estate | 2021 |
| Nirmalay Limited | Wholesale & retail | 2026 |
| Nithyan Limited | Information & communication | 2017 |
| Nj&R Services Ltd | Wholesale & retail | 2024 |
| Njmi Co Limited | Real estate | 2023 |
| NJW Consultancy Services Ltd | Information & communication | 2023 |
| NN Services Limited | Professional & scientific | 2003 |
| Noatum Logistics UK Holdings Limited | Professional & scientific | 2004 |
| Noatum Logistics UK Limited | Transport & logistics | 1992 |
| Noble Rugby Ltd | Professional & scientific | 2024 |
| Nomira Ltd | Real estate | 2023 |
| Norah James Properties Ltd | Real estate | 2021 |
| North African Financial Holding Ltd | Professional & scientific | 2026 |
| North Street Consulting Ltd | Professional & scientific | 2013 |
| North Street Properties Ltd | Real estate | 2021 |
| North West Clothing Ltd | Wholesale & retail | 2020 |
| Nose Capital Ltd | Real estate | 2026 |
| NOT Another Gym Ltd | Arts & recreation | 2026 |
| Nourish Wellbeing Shop Ltd | Wholesale & retail | 2024 |
| Nova Forge Software Ltd | Professional & scientific | 2022 |
| Nova Vista Group Limited | Professional & scientific | 2024 |
| Novae Terrae Ltd | Real estate | 2021 |