| MW Holdings (SE) Ltd | Real estate | 2022 |
| MW Psychology and Counselling Services Limited | Health & social care | 2012 |
| MW Rail Consultancy Limited | Construction | 2025 |
| MWA Plumbing & Heating Ltd | Construction | 2022 |
| Mwesigwaz Limited | Health & social care | 2024 |
| MWR Construction Group Ltd | Construction | 2026 |
| MWS Motors Ltd | Wholesale & retail | 2020 |
| My Babiie Retail Ltd | Wholesale & retail | 2022 |
| My Buy Onlinee UK Ltd | Wholesale & retail | 2026 |
| My Cake Maker Limited | Hospitality | 2017 |
| My Confidant Ltd | Information & communication | 2025 |
| My Debt Help Ltd | Financial services | 2024 |
| My Digital Notion Ltd | Information & communication | 2020 |
| My Dream Tribe Ltd | Wholesale & retail | 2025 |
| My Paradise Found Ltd | Administrative & support | 2020 |
| My Space Estates Ltd | Real estate | 2022 |
| My Thai Limited | Hospitality | 2011 |
| Mycoumami Properties Ltd | Construction | 2025 |
| Myecig Ltd | Wholesale & retail | 2022 |
| Mygymsupps Limited | Wholesale & retail | 2019 |
| Myles and Blue Services Ltd | Health & social care | 2022 |
| Mypure Limited | Wholesale & retail | 2004 |
| Myriad Ventures Limited | Hospitality | 2024 |
| Myriod Ltd | Wholesale & retail | 2020 |
| Myrt Properties Limited | Real estate | 2017 |
| Myrtle Court Residents Limited | Administrative & support | 2007 |
| Mysson Property Company Limited | Real estate | 2016 |
| Mystrium Limited | Information & communication | 2006 |
| Mytransport WZ Ltd | Transport & logistics | 2019 |
| N & V Limited | Real estate | 2022 |
| N Bartlett Crane & Lifting Supervision Limited | Construction | 2015 |
| N C Gauchan Properties Ltd | Real estate | 2017 |
| N C M Catering Limited | Professional & scientific | 2010 |
| N J Aviation Services Limited | Transport & logistics | 2016 |
| N.A. Caselton Building Services Limited | Construction | 2004 |
| N.A.L Barbers Ltd | Other services | 2023 |
| N.I Pallets Limited | Other services | 2014 |
| N.T.G Glass Works Limited | Wholesale & retail | 2016 |
| N4P Consultancy Limited | Professional & scientific | 2012 |
| Nadco Roofing Services Limited | Construction | 2011 |
| Nagra & Nagra Ltd | Real estate | 2021 |
| Nagra Asset Management Ltd | Real estate | 2025 |
| Nail Forever Ltd | Other services | 2019 |
| Nail Lounge Ashford Ltd | Other services | 2023 |
| Nailaholic Bar Ltd | Other services | 2025 |
| Naji Estates Ltd | Real estate | 2023 |
| NAK Technical Services Ltd | Professional & scientific | 2026 |
| Nakmas Limited | Extraterritorial | 2005 |
| NAL Consultancy Limited | Information & communication | 2019 |
| Nalbo 9295 House Limited | Real estate | 2024 |
| Nali Barbers Kent Ltd | Other services | 2026 |
| Namc Consulting Limited | Professional & scientific | 2017 |
| Namoz Extra Limited | Hospitality | 2026 |
| Nancy's Cathedral Tea Rooms Limited | Extraterritorial | 2016 |
| Nand Healthcare Ltd | Health & social care | 2023 |
| Nand Services UK Limited | Transport & logistics | 2021 |
| Nankris Analytics Company Limited | Financial services | 2018 |
| Nanny Mcpets Dog Grooming Ltd | Other services | 2022 |
| Nano IT Solutions Limited | Information & communication | 2013 |
| Nanoit Limited | Information & communication | 2015 |
| Napier Technical Support Services Limited | Professional & scientific | 2014 |
| Narsolsaab & SE Ltd | Other services | 2017 |
| Nasua Ltd | Manufacturing | 2025 |
| Nat'Ural Hair Academy Ltd | Education | 2024 |
| Natalie Harris Aesthetics Ltd | Other services | 2023 |
| Natellanice Holdings Ltd | Real estate | 2025 |
| Nathaniel Sobhee Consulting Limited | Arts & recreation | 2018 |
| National AV Ltd | Information & communication | 2021 |
| Nationwide Facilities Ltd | Construction | 2013 |
| Nationwide Gritting Ltd | Real estate | 2019 |
| Nationwide Sameday Couriers Limited | Transport & logistics | 2019 |
| Native Exobyte Limited | Construction | 2018 |
| Native Productions Ltd | Manufacturing | 2023 |
| Natka TV Limited | Information & communication | 2023 |
| Natural Landscape Construction Ltd | Construction | 2004 |
| Natural Learning & Development Ltd | Professional & scientific | 2017 |
| Natural Science Group Ltd | Manufacturing | 2022 |
| Natureweave Ltd | Wholesale & retail | 2024 |
| Naughty Norse Limited | Administrative & support | 2024 |
| Navalis Property Limited | Real estate | 2025 |
| Navana International Foods Limited | Wholesale & retail | 2018 |
| Navera Group Ltd | Real estate | 2026 |
| Nawaab Roofing and Build Ltd | Construction | 2026 |
| Nawcom Services Limited | Construction | 2016 |
| Naya Talent Consulting Limited | Administrative & support | 2023 |
| Naycon Group Ltd | Construction | 2025 |
| NB Candles and Gifts Ltd | Manufacturing | 2026 |
| NCK Ireland UK Limited | Professional & scientific | 2026 |
| NCS Shipping Limited | Transport & logistics | 2013 |
| Ndutrans Ltd | Construction | 2022 |
| NE Roofing Limited | Construction | 2024 |
| Neamhara Labs Ltd | Information & communication | 2026 |
| Need 4 Care Limited | Health & social care | 2018 |
| Needham Chalks Ltd | Agriculture & fishing | 2026 |
| Neeom Ltd | Information & communication | 2019 |
| Neeye Jaan Limited | Hospitality | 2024 |
| Nefiq Limited | Information & communication | 2025 |
| Neil Ades Plant Services Limited | Administrative & support | 2003 |
| Neketti Ltd. | Information & communication | 2024 |
| Nelsolution Services Limited | Other services | 2018 |