| New Jaboat Community UK | Professional & scientific | 2025 |
| New Kulcha Express Ltd | Extraterritorial | 2019 |
| New Look's Hair & Beauty Ltd | Other services | 2023 |
| New Malik Transport Ltd | Wholesale & retail | 2022 |
| New Orleans Properties Ltd | Real estate | 2026 |
| New Range Builders Limited | Construction | 2018 |
| New School Mentality CIC | Education | 2023 |
| New Season International Ministries Ltd | Health & social care | 2015 |
| New Shahi Naan Kebab Ltd | Hospitality | 2022 |
| New Sovereign Cars Ltd | Transport & logistics | 2007 |
| New Stream Consulting Limited | Information & communication | 2010 |
| New Touch Building Services Limited | Construction | 2013 |
| New Vertex Ltd | Wholesale & retail | 2023 |
| New York Nails 158 Ltd | Other services | 2023 |
| Newcastle Executive Apartment Ltd | Hospitality | 2015 |
| Newcity Super Market Ltd | Other services | 2021 |
| Newhouse & Yang Limited | Professional & scientific | 2019 |
| Newland Drive Ltd | Wholesale & retail | 2024 |
| Newlook Double Glazing Ltd | Other services | 2012 |
| Newmax Global Limited | Other services | 2020 |
| Newrest Holding LCY UK Limited | Other services | 2007 |
| Newrest Holding UK Limited | Professional & scientific | 2018 |
| Newrest Inflight UK Limited | Hospitality | 2018 |
| Newrest-All Limited | Other services | 2010 |
| Newspaper Delivery Services Limited | Other services | 2009 |
| NEX Motors Ltd | Wholesale & retail | 2021 |
| Nexa Analytics Ltd | Information & communication | 2023 |
| Nexadrive Group Ltd | Transport & logistics | 2025 |
| Nexapixel Ltd | Wholesale & retail | 2023 |
| Nexest Ltd | Real estate | 2025 |
| Nexgfusion Limited | Administrative & support | 2009 |
| Nexgoal Sports Ltd | Health & social care | 2025 |
| Nexometrics UK Ltd | Information & communication | 2025 |
| Nexora Technologies Private Limited | Information & communication | 2025 |
| Nexorus Ltd | Wholesale & retail | 2026 |
| Nexprime Limited | Other services | 2011 |
| Next GEN MGI Southend Limited | Real estate | 2024 |
| Next GEN Relocation Ltd | Transport & logistics | 2026 |
| Next Generation Construction Ltd | Construction | 2019 |
| Next IT Solutions Limited | Information & communication | 2012 |
| Next Level Design & Build Ltd | Construction | 2023 |
| Next Reach Ltd | Information & communication | 2024 |
| Next Venture Solutions Limited | Information & communication | 2011 |
| Next-Gen Flight Training Ltd | Professional & scientific | 2026 |
| Next.Gen.Dealzz Limited | Wholesale & retail | 2026 |
| Nextage Ltd | Wholesale & retail | 2021 |
| Nextbay Ltd | Construction | 2025 |
| Nextcart UK Ltd | Wholesale & retail | 2026 |
| Nextflightcourier Worldwide Ltd | Transport & logistics | 2025 |
| Nextgen Advisory Limited | Professional & scientific | 2026 |
| Nextgen Express Ltd | Transport & logistics | 2024 |
| Nextgen Learning Centre Ltd | Education | 2025 |
| Nextgen Logistics Solution Ltd | Transport & logistics | 2025 |
| Nextgen Telco Solutions Ltd | Information & communication | 2023 |
| Nextgen Warehouse Ltd | Wholesale & retail | 2025 |
| Nextnest Removals Ltd | Transport & logistics | 2026 |
| Nextphase Software Limited | Information & communication | 2025 |
| Nextride Autos Limited | Wholesale & retail | 2025 |
| Nextstoreuk Ltd | Wholesale & retail | 2024 |
| Nexum Motors Ltd | Wholesale & retail | 2025 |
| Nexus Cyber Security Ltd | Information & communication | 2023 |
| Nexus Development Group Limited | Construction | 2024 |
| Nexus Education Services Ltd | Professional & scientific | 2025 |
| Nexus Elemental Consulting Ltd | Information & communication | 2024 |
| Nexus Enterprise Group Limited | Construction | 2024 |
| Nexus Grande Limited | Administrative & support | 2024 |
| Nexus Green Cargo Ltd | Transport & logistics | 2026 |
| Nexus Grid Limited | Information & communication | 2015 |
| Nexus Home Construction Limited | Construction | 2025 |
| Nexus Hospitality Group Ltd | Construction | 2025 |
| Nexus Legal (London) Limited | Professional & scientific | 2025 |
| Nexus London Coach and Minibus Hire Limited | Transport & logistics | 2025 |
| Nexus Multinational Ltd | Wholesale & retail | 2022 |
| Nexus Noosphere CIC | Professional & scientific | 2026 |
| Nexus Projects Limited | Construction | 2023 |
| Nexzen Design & Build Limited | Construction | 2025 |
| NFA Constructionss Ltd | Construction | 2026 |
| Nfer Trading Limited | Information & communication | 2000 |
| NFS Worldwide Ltd | Information & communication | 2025 |
| Nfsm Sovereign Properties Limited | Real estate | 2026 |
| NG Fixing Limited | Construction | 2008 |
| NG Garden Services Ltd | Other services | 2019 |
| NGN Support Ltd | Information & communication | 2024 |
| NGP Accountax Services Ltd | Financial services | 2022 |
| Ngptax Limited | Professional & scientific | 2022 |
| NGR Builders Ltd | Construction | 2026 |
| Ngubs Ltd | Health & social care | 2022 |
| NGZ Housing Ltd | Real estate | 2025 |
| NH Developements & Construction Ltd | Construction | 2024 |
| NH Medical Services Ltd | Health & social care | 2011 |
| NH Trade & Compliance Ltd | Transport & logistics | 2021 |
| NHM Properties BD Ltd | Real estate | 2025 |
| NHZ Global Ltd | Wholesale & retail | 2009 |
| Niasss Inter Transport Ltd | Transport & logistics | 2019 |
| Nica Website Solutions Ltd | Professional & scientific | 2025 |
| Nice & Clean Limited | Other services | 2016 |
| Niche Travel Group Limited | Administrative & support | 2020 |
| Nicholas Bunby Event Production Ltd | Professional & scientific | 2022 |
| Nick Dried Flowers Ltd | Wholesale & retail | 2026 |
| Nick Staircase Ltd | Construction | 2024 |