| My Memory Lane Ltd | Information & communication | 2025 |
| My Menopause Gym Ltd | Arts & recreation | 2024 |
| My Scribe Limited | Manufacturing | 2024 |
| My Skateworld Ltd | Arts & recreation | 2025 |
| My Smile Dental Ltd | Health & social care | 2019 |
| Myductwork Ltd | Construction | 2016 |
| Myhexagone Limited | Administrative & support | 2010 |
| MYP Community Ltd | Information & communication | 2024 |
| Myrtle Point Ltd | Construction | 2020 |
| Myst Golf Ltd | Wholesale & retail | 2025 |
| Mysteryband Limited | Real estate | 1990 |
| Mystyle Finance Limited | Professional & scientific | 2023 |
| Mysweetsmile Ltd | Wholesale & retail | 2020 |
| Mywren Limited | Manufacturing | 2018 |
| N & I Care Limited | Administrative & support | 2023 |
| N a R G Properties Limited | Real estate | 2024 |
| N Field Projects Ltd | Construction | 2022 |
| N J Tuckley Limited | Health & social care | 1999 |
| N R Marketing Limited | Other services | 2015 |
| N S Capital Limited | Financial services | 2010 |
| N V Construction & Developments Ltd | Construction | 2023 |
| N&L Trade Ltd | Hospitality | 2023 |
| N&P Laser & Wellness Partners Limited | Other services | 2025 |
| N-Hancer Limited | Real estate | 1990 |
| N1 Derivatives Limited | Extraterritorial | 2014 |
| NAB Dental Holdings Limited | Administrative & support | 2017 |
| Naeiled Research Limited | Professional & scientific | 2014 |
| Naha Digital Limited | Information & communication | 2016 |
| Nailed by Lucie Ltd | Other services | 2021 |
| NAK Learning Ltd | Education | 2026 |
| Nakhandwala Ltd | Education | 2022 |
| Namin Holdings Limited | Financial services | 2018 |
| Namor Tattoo Company Ltd | Other services | 2019 |
| Namoz Foods Limited | Hospitality | 2020 |
| Nandi Local Service Limited | Wholesale & retail | 2022 |
| Nandini Hospitality Ltd | Hospitality | 2023 |
| Nandipha S Ltd | Health & social care | 2015 |
| Nanogroup Ltd | Professional & scientific | 2019 |
| Nascafe Ltd | Wholesale & retail | 2023 |
| Nash Cleaners Ltd | Administrative & support | 2024 |
| Natalia’S Beauty Ltd | Other services | 2025 |
| Natewood Farm Limited | Administrative & support | 2016 |
| Natewood Property Ltd | Administrative & support | 2014 |
| National Services for Educational Development Limited | Education | 2019 |
| National Trade Direct Ltd | Manufacturing | 2020 |
| Nationwide Coffee Limited | Wholesale & retail | 2009 |
| Native Spirit Threads CIC | Wholesale & retail | 2023 |
| Natland Limited | Real estate | 2004 |
| Natural Baby Box Ltd | Administrative & support | 2019 |
| Natural Fitness Centre Limited | Hospitality | 2021 |
| Natural Resource Consulting Limited | Other services | 2022 |
| Naturalinda Ltd | Education | 2020 |
| Natures Way PCF Limited | Agriculture & fishing | 2026 |
| NAV Sarao Futures Limited | Extraterritorial | 2005 |
| Navanter Ltd | Other services | 2011 |
| Naywood Limited | Households | 1997 |
| NDC Cleaning Limited | Administrative & support | 2004 |
| Ndihleziphi Services Limited | Health & social care | 2018 |
| NEA Associates Ltd | Extraterritorial | 2023 |
| Nealon Affinity Partners, Limited | Financial services | 2010 |
| Nearfield Records Limited | Professional & scientific | 2005 |
| Nedfox UK Limited | Information & communication | 2017 |
| NEE Shay Ltd | Real estate | 2025 |
| Need Drinks Ltd | Manufacturing | 2024 |
| Needed Foundation | Hospitality | 2026 |
| Neen Medical Services Ltd | Health & social care | 2016 |
| Neeply Quality Products Limited | Wholesale & retail | 2026 |
| Neesh Ltd | Administrative & support | 2021 |
| Neevestech Ltd | Professional & scientific | 2015 |
| Negrila Ltd | Administrative & support | 2014 |
| Neil's Driving School Limited | Education | 2016 |
| NEL Family Holdings Ltd | Real estate | 2022 |
| NEL Healthcare Limited | Health & social care | 2015 |
| Neli 1 Ltd | Hospitality | 2024 |
| Nelson Coffee Roasters Limited | Manufacturing | 2020 |
| Nelson Company Eatery Limited | Hospitality | 2019 |
| Neptune Spas Limited | Wholesale & retail | 2005 |
| Nesa Robotics Limited | Information & communication | 2020 |
| Nesos Clinic Ltd | Other services | 2026 |
| Nest and Nurture Limited | Health & social care | 2019 |
| Nest Builders Sussex Ltd | Construction | 2019 |
| Nest Building Developments Limited | Real estate | 2022 |
| Netroost Limited | Information & communication | 2019 |
| Netty's Supreme Cleans Limited | Administrative & support | 2025 |
| Netviatech Ltd | Administrative & support | 2019 |
| Network Facilitech Limited | Administrative & support | 2017 |
| Neve Freight Services Ltd | Transport & logistics | 2025 |
| New Concept Catering Equipment Limited | Manufacturing | 2007 |
| New Dimension Management Ltd. | Construction | 2017 |
| New Direction of Travel Limited | Professional & scientific | 2020 |
| New Division Electric Ltd | Professional & scientific | 2008 |
| New ERA Mortgages Limited | Financial services | 2023 |
| New Leaf Publishing Limited | Administrative & support | 1995 |
| New on Sprue Ltd | Wholesale & retail | 2026 |
| New Patidar Limited | Hospitality | 2025 |
| Newbest Solutions Limited | Construction | 2013 |
| Newburn Crescent Management Company Limited | Households | 2017 |
| Newchina-Eastbourne Ltd | Hospitality | 2025 |
| Newchinnainn Limited | Hospitality | 2024 |
| Newedge Property Investments Ltd | Extraterritorial | 2018 |