| NB Services (Kent) Limited | Manufacturing | 2013 |
| NC Electrical Ltd | Construction | 2019 |
| NC Quality Services Ltd | Professional & scientific | 2025 |
| Ncala DUM Ltd | Wholesale & retail | 2025 |
| NCC Digital Limited | Information & communication | 2023 |
| ND SAI Properties Ltd | Real estate | 2024 |
| Ndu-Nze Nkwerre Europe CIC | Construction | 2025 |
| Nea-H Ltd | Wholesale & retail | 2014 |
| Neat Freak Cleans Ltd | Administrative & support | 2023 |
| Neat Ninjas Ltd | Administrative & support | 2025 |
| Neat Retreat Services Ltd | Administrative & support | 2024 |
| Neatcore Services Ltd | Administrative & support | 2026 |
| Neboat Solutions Limited | Professional & scientific | 2025 |
| NEC Operational Management Services Ltd | Extraterritorial | 2023 |
| Necc Ltd | Professional & scientific | 2019 |
| Necon Transport Ltd | Transport & logistics | 2014 |
| NED Solutions Ltd | Professional & scientific | 2012 |
| Neill Ford Tools Ltd | Wholesale & retail | 2015 |
| Nelly Chucks Apparel Ltd | Wholesale & retail | 2021 |
| Nelson Group Ltd | Real estate | 2024 |
| Nemt Properties Ltd | Real estate | 2023 |
| Neofit Limited | Construction | 2009 |
| Nephology Partners Ltd | Information & communication | 2021 |
| Nepomuck Ltd | Health & social care | 2020 |
| Nest FAS Ltd | Health & social care | 2025 |
| Nestland Solutions Ltd | Real estate | 2026 |
| Nestpay Digital Limited | Financial services | 2023 |
| NET PNL Ltd | Real estate | 2020 |
| Netcom Connect Ltd | Information & communication | 2022 |
| Netscope Ltd | Construction | 2015 |
| Network South East Ltd | Other services | 2017 |
| Network Upgrades Ltd | Construction | 2025 |
| Networx Traffic Management Ltd | Professional & scientific | 2026 |
| NEU Group Ltd | Construction | 2016 |
| Neural Coach Limited | Education | 2016 |
| Neuralgene Limited | Information & communication | 2019 |
| Neuro Lingo Motion Limited | Professional & scientific | 2023 |
| Neva Systems Limited | Information & communication | 2017 |
| Nevaith Property Group Ltd | Real estate | 2024 |
| New Avenue Group Ltd | Financial services | 2017 |
| New Avenue Properties Limited | Real estate | 2015 |
| New Chapter Property Group Limited | Real estate | 2025 |
| New Concept Cleaning Ltd | Administrative & support | 2004 |
| New Day IT Limited | Information & communication | 2016 |
| New Desk Limited | Professional & scientific | 2013 |
| New ERA Electrical Limited | Manufacturing | 2016 |
| New Frydays Limited | Hospitality | 2017 |
| New GEN Carpentry Ltd | Construction | 2021 |
| New Road Gallery Ltd | Arts & recreation | 2022 |
| New Super Pizza Ltd | Hospitality | 2025 |
| New Technology Centre Ltd | Information & communication | 2018 |
| New Vine Associates Limited | Real estate | 2014 |
| New York Nails 11 Ltd | Other services | 2025 |
| Newbestway Ltd | Wholesale & retail | 2024 |
| Newnham Court Detling Limited | Professional & scientific | 1988 |
| Newsstand Limited | Wholesale & retail | 2005 |
| Newton Scenery Ltd | Manufacturing | 2022 |
| Nexgen Smart Solutions Ltd | Construction | 2026 |
| Nexora Quantive Ltd | Wholesale & retail | 2026 |
| Next GEN Carpentry Limited | Construction | 2024 |
| Next Level Sports Development Limited | Education | 2025 |
| Next Step Therapy Limited | Health & social care | 2024 |
| Next Top VN Club Entertainment Limited | Arts & recreation | 2018 |
| Nextalabs Ltd. | Wholesale & retail | 2023 |
| Nextbeat Limited | Information & communication | 2024 |
| Nexus Data Solution Ltd | Information & communication | 2026 |
| Nexus Wealth Management Limited | Information & communication | 2025 |
| Neythen Limited | Transport & logistics | 2013 |
| Nezaj & Sons Limited | Financial services | 2025 |
| Nezaj Property Limited | Real estate | 2025 |
| Nezaj Services Limited | Water & waste | 2012 |
| NG Connect Limited | Information & communication | 2022 |
| NHB Smoke Control Ltd | Construction | 2014 |
| NHE Property Group Ltd | Real estate | 2026 |
| Niagara Sports UK Ltd | Arts & recreation | 2024 |
| Nice Solutions Ltd | Extraterritorial | 2023 |
| Nicholas Sarantakis Ltd | Real estate | 2023 |
| Nick Rigden Limited | Construction | 2003 |
| Nick Smith Coaching Ltd | Information & communication | 2025 |
| Nickbv Ltd | Transport & logistics | 2015 |
| Nicke Electrical Distribution Construction Ltd | Energy | 2015 |
| Nifty Projects Ltd | Professional & scientific | 2016 |
| Nifty Properties Limited | Real estate | 2024 |
| Nigerian Student Society Presidents Forum CIC | Education | 2025 |
| Night Face Ltd | Hospitality | 2025 |
| Nightingale 1969 Limited | Extraterritorial | 2015 |
| Nightingale Bathrooms Limited | Administrative & support | 2012 |
| Niji Services Limited | Real estate | 2013 |
| Nikulia Ltd | Transport & logistics | 2018 |
| NIM UK and Republic of Ireland Chapter Ltd | Other services | 2025 |
| Ninamo Services Limited | Real estate | 2018 |
| Nisa Packaging Ltd | Administrative & support | 2026 |
| Nisha 13 Ltd | Real estate | 2003 |
| Nisian Group Limited | Real estate | 2024 |
| Nissel Healhcare Recruitment Ltd | Administrative & support | 2026 |
| Nisu Construction Limited | Construction | 2017 |
| Nitriccell Medical Ltd | Manufacturing | 2020 |
| Niwings Limited | Transport & logistics | 2026 |
| NJB Capital Group Limited | Financial services | 2026 |
| NJB Property Developments Ltd | Real estate | 2023 |