| N11 Pictures Ltd | Information & communication | 2023 |
| N2O (North) Limited | Extraterritorial | 2020 |
| N2O (South) Limited | Extraterritorial | 2015 |
| N2O Limited | Professional & scientific | 1999 |
| N3W Angle CIC | Education | 2024 |
| N8TURAL Pro Ltd | Wholesale & retail | 2024 |
| Nacoss Limited | Administrative & support | 1998 |
| Nagpal Convenience Store Ltd | Wholesale & retail | 2019 |
| Nail ME Ltd | Other services | 2012 |
| Nakatomi Investments Limited | Professional & scientific | 2012 |
| Nannycare Limited | Wholesale & retail | 1991 |
| Nano NX Ltd | Construction | 2024 |
| Naomi Korn Associates Ltd | Professional & scientific | 2011 |
| NAR Productions Ltd | Arts & recreation | 2021 |
| Nashiar Limited | Real estate | 2025 |
| Nashita Software Solution Ltd | Information & communication | 2014 |
| Nasib Properties Limited | Households | 2022 |
| Nasila Pharma Limited | Wholesale & retail | 2016 |
| Nasotech Limited | Professional & scientific | 2008 |
| Natasha Allan Law Limited | Professional & scientific | 2024 |
| Natashaverma Ltd | Health & social care | 2016 |
| Natbeauty & Wellness Ltd | Wholesale & retail | 2017 |
| Natcare Beauty Ltd | Wholesale & retail | 2017 |
| Natcare Cosmetics Ltd | Other services | 2015 |
| Nathalie Asmar Services Ltd | Professional & scientific | 2013 |
| Nathan Services Limited | Construction | 2025 |
| National Assessors Ltd | Administrative & support | 2012 |
| National Bargains Limited | Wholesale & retail | 2022 |
| National Brick Company Limited | Professional & scientific | 1901 |
| National Paints Limited | Manufacturing | 2025 |
| National Security Inspectorate | Administrative & support | 1999 |
| National Security Limited | Construction | 2020 |
| National Star Brick and Tile Holdings Limited | Professional & scientific | 1934 |
| National Star Limited | Professional & scientific | 1887 |
| Nationwide Land & Development Ltd | Construction | 2015 |
| Nationwide People Properties Ltd | Real estate | 2024 |
| Naturaft Ltd | Wholesale & retail | 2025 |
| Natural Addiction Limited | Hospitality | 2001 |
| Natural Green Limited | Wholesale & retail | 2022 |
| Nature's Haven Ltd | Other services | 2022 |
| NAV NOW Limited | Wholesale & retail | 2006 |
| Navus Financial Limited | Real estate | 2014 |
| Navya Consulting Ltd | Information & communication | 2016 |
| Navya Search Ltd | Administrative & support | 2024 |
| Nayeon Ltd | Construction | 2018 |
| NBH Design Ltd | Professional & scientific | 2015 |
| NBM Technical Installations Limited | Construction | 2019 |
| NBR Traders Ltd | Wholesale & retail | 2025 |
| NBX Consulting Ltd | Professional & scientific | 2024 |
| NC Shares Ltd | Financial services | 2025 |
| NC2 Consulting Ltd | Professional & scientific | 2024 |
| Ncmp Limited | Manufacturing | 1983 |
| ND Brewster Associates Ltd | Professional & scientific | 2005 |
| ND Consult Technology Innovation Ltd | Professional & scientific | 2017 |
| ND Energy Commodities Limited | Information & communication | 2026 |
| Nebula Music Ltd | Information & communication | 2018 |
| Nefolo Ltd | Information & communication | 2021 |
| Neil Symons Limited | Administrative & support | 2012 |
| Neill Consulting Limited | Professional & scientific | 2009 |
| Nelumbo Yoga Retreats Ltd | Other services | 2025 |
| Nemtek Limited | Professional & scientific | 2014 |
| Nene Valley Waste Limited | Extraterritorial | 1991 |
| Neoplas Recyclers Ltd | Water & waste | 2024 |
| Neos Chronos Limited | Professional & scientific | 2013 |
| Neosalpha Technologies Limited | Information & communication | 2017 |
| Nepsi Ltd | Other services | 2023 |
| Nest for Growing Minds Limited | Wholesale & retail | 2017 |
| Netfinance Consulting Ltd | Professional & scientific | 2025 |
| Nettours Limited | Administrative & support | 2017 |
| Netvision London Limited | Extraterritorial | 2020 |
| Network Elect Ltd | Information & communication | 2025 |
| Neurobooks Limited | Professional & scientific | 2025 |
| Neville & Griffin Limited | Real estate | 1947 |
| Nevio Ltd | Wholesale & retail | 2022 |
| New Buddha Ltd | Hospitality | 2020 |
| New Cavendish Enterprises Limited | Professional & scientific | 2005 |
| New ECG Ltd | Health & social care | 2025 |
| New ERA Keystone Limited | Households | 2025 |
| New Frontier Media Ltd | Professional & scientific | 2025 |
| New Homes Flooring Ltd | Construction | 2017 |
| New KN Glazing Ltd | Construction | 2016 |
| New Malwa Logistics Ltd | Transport & logistics | 2021 |
| New Model Consulting Ltd | Professional & scientific | 2023 |
| New Point London Limited | Wholesale & retail | 2023 |
| New Road Consulting Ltd | Professional & scientific | 2024 |
| New Scaler Limited | Information & communication | 2012 |
| New Start Financial Services Ltd | Financial services | 2005 |
| New Vision Limited | Professional & scientific | 2009 |
| New World Films Limited | Professional & scientific | 2025 |
| Newbury Adventure Golf Ltd | Arts & recreation | 2022 |
| Newground Design Ltd. | Information & communication | 2023 |
| Newlands Farm Ltd | Agriculture & fishing | 2025 |
| Newlands Girls' School | Education | 2015 |
| Newlands International Limited | Professional & scientific | 2003 |
| Newline Transformation Ltd | Information & communication | 2023 |
| Newtongrads Limited | Administrative & support | 2007 |
| Nexakt Ltd | Wholesale & retail | 2023 |
| Nexansion Ltd | Financial services | 2024 |
| Nexarian Limited | Financial services | 2024 |
| Nexgen Electrical Innovations Limited | Construction | 2024 |