| Netherfield Limited | Professional & scientific | 2025 |
| Neti Consult Ltd | Information & communication | 2023 |
| Neti Holdings Ltd | Real estate | 2023 |
| Netrunner Limited | Wholesale & retail | 2023 |
| Netspi UK Limited | Other services | 2022 |
| Nettpage Limited | Financial services | 2025 |
| Nettpay Limited | Financial services | 2022 |
| Neurio Limited | Manufacturing | 2018 |
| Neuro Still Ltd | Other services | 2026 |
| Neurodiversity Consulting UK Ltd | Administrative & support | 2025 |
| Neurolens Limited | Health & social care | 2025 |
| Neuron Supplements Limited | Wholesale & retail | 2023 |
| Neurophoria NLP Ltd | Health & social care | 2019 |
| Neurosphere Holdings Limited | Financial services | 2025 |
| Neverlong Ltd | Extraterritorial | 2005 |
| New Business Resolution Limited | Wholesale & retail | 2016 |
| New Cathay Trading International Limited | Information & communication | 2026 |
| New Court Estate Limited | Real estate | 2016 |
| New Creation Centre - Redeemed Christian Church of GOD | Other services | 2009 |
| New Earth Holistic Spaces Ltd | Wholesale & retail | 2025 |
| New ERA Skin Aesthetics Limited | Other services | 2018 |
| New George Street Estate Co 2 Limited | Other services | 2017 |
| New George Street Estate Company Limited | Extraterritorial | 2017 |
| New Hope Care Holdings Limited | Other services | 2024 |
| New Hope Childrens Homes Limited | Health & social care | 2022 |
| New Hope Property Care Limited | Real estate | 2024 |
| New Horizon Trading Ltd | Real estate | 2020 |
| New Horizons Builders Ltd | Construction | 2019 |
| New Huddersfield Estates Limited | Other services | 2025 |
| New Huddersfield Holdings Limited | Other services | 2022 |
| New Leaf Services Limited | Professional & scientific | 2018 |
| New Mile Projects 2 Ltd | Extraterritorial | 2016 |
| New Square Law Limited | Professional & scientific | 2024 |
| New Ways Cash and Carry Ltd | Wholesale & retail | 2023 |
| New White Limited | Manufacturing | 2007 |
| New Wine Nation CIC | Professional & scientific | 2024 |
| Newarch Record Label Ltd | Information & communication | 2025 |
| Newchurch Estates Ltd | Real estate | 2023 |
| Newdrawn Ltd | Extraterritorial | 2001 |
| Newegg UK, Ltd | Wholesale & retail | 2015 |
| Newgreen Estates Ltd | Real estate | 2003 |
| Newhouse Estate Management Limited | Other services | 2018 |
| Newhouse Estate Management NO.2 Limited | Other services | 2021 |
| Newjay Ltd | Real estate | 2025 |
| Newlyme Estates Ltd | Other services | 2017 |
| Newmax Property Ltd | Real estate | 2010 |
| Newmi Global Limited | Wholesale & retail | 2020 |
| Newmile Projects Limited | Extraterritorial | 2016 |
| Newmore Management Ltd | Real estate | 2017 |
| Newmore Online Limited | Wholesale & retail | 2025 |
| Newpath MCR Ltd | Real estate | 2020 |
| Newscape Properties Venture Ltd | Real estate | 2022 |
| Newscarborough Estates Limited | Other services | 2025 |
| Newstar Productions Limited | Professional & scientific | 2002 |
| Newstone Care Ltd | Real estate | 2022 |
| Newswift Management Ltd | Real estate | 2009 |
| Newton (Kirkham) Limited | | 1965 |
| Newtree Builders Limited | Real estate | 2019 |
| Nexa Admin Limited | Administrative & support | 2025 |
| Nexahire Ltd | Administrative & support | 2026 |
| Nexgen Engineering Ltd | Professional & scientific | 2025 |
| Nexgen Properties Investment Ltd | Real estate | 2019 |
| Nexo Digitals Ltd | Manufacturing | 2026 |
| Nexstart IT Ltd | Information & communication | 2025 |
| Next Generation Fine Art Limited | Wholesale & retail | 2019 |
| Next Level Learning Limited | Education | 2018 |
| Next Step Accountants Ltd | Professional & scientific | 2025 |
| Next Step Property Solutions Ltd | Professional & scientific | 2025 |
| Nextera General Trading Limited | Wholesale & retail | 2025 |
| Nextgen Accountants & Business Consultants Ltd | Professional & scientific | 2024 |
| Nextgen Mediaworks Ltd | Education | 2022 |
| Nextjobquest Ltd | Wholesale & retail | 2024 |
| Nextwave Mobile Limited | Wholesale & retail | 2025 |
| Nextwood Limited | Real estate | 2020 |
| Nexus Health and Energy Ltd | Health & social care | 2026 |
| Nexus MCR Ltd | Professional & scientific | 2025 |
| Nexus PPT Ltd | Real estate | 2023 |
| Nexuscognito Ltd | Information & communication | 2025 |
| Nexusmetal Ltd | Wholesale & retail | 2024 |
| NF Sports and Exercise Medicine Limited | Health & social care | 2025 |
| Nffc Limited | Real estate | 2024 |
| NFP Consulting Ltd | Professional & scientific | 2022 |
| Ngandu Express Limited | Households | 2018 |
| Ngozichukwuka Care Limited | Health & social care | 2022 |
| NGS Service Ltd | Construction | 2025 |
| Nguyen Huyen Ltd | Wholesale & retail | 2025 |
| NH MED Ltd | Health & social care | 2026 |
| NH Plus Limited | Transport & logistics | 2025 |
| NHF Estates Ltd | Real estate | 2021 |
| NHL (Euro) Ltd | Real estate | 2024 |
| Nhnw Limited | Extraterritorial | 2020 |
| NHW & Jewellers Ltd | Wholesale & retail | 2019 |
| Niawi Crafts Limited | Wholesale & retail | 2026 |
| Nibbles and More Ltd | Hospitality | 2025 |
| NIC Hot Ltd | Wholesale & retail | 2026 |
| Nice Guys Limited | Professional & scientific | 2022 |
| Nice Takeaway Ltd | Hospitality | 2026 |
| Niche Fashions Limited | Wholesale & retail | 2008 |
| Nichols Greental Investments Ltd | Real estate | 2022 |
| Nick 73 Ltd | Transport & logistics | 2019 |