| Natural Supplements Ltd | Manufacturing | 2018 |
| Naturally Tribal Skincare Limited | Wholesale & retail | 2016 |
| Nature Buggies Ltd | Administrative & support | 2021 |
| Natureeye UK Ltd | Hospitality | 2023 |
| Naturenest Limited | Financial services | 2024 |
| Natures IT Services Ltd | Information & communication | 2023 |
| Naturewood Limited | Other services | 1990 |
| Naturophia Ltd | Manufacturing | 2022 |
| Naumbuild Construction Team Ltd | Construction | 2024 |
| Nautafix Global Limited | Manufacturing | 2024 |
| NAV Construction and Civil Engineering Ltd | Construction | 2019 |
| NAV Limited | Wholesale & retail | 2000 |
| Navacore Ltd | Wholesale & retail | 2025 |
| Navara Beauty & Care Ltd | Other services | 2020 |
| Navcasa Group Ltd | Real estate | 2026 |
| Naveenkumar Selvam Limited | Construction | 2019 |
| Navi Digital Services Ltd | Information & communication | 2024 |
| Navid Tech UK Company Limited | Administrative & support | 2025 |
| Navigate Infrastructure Consulting Limited | Professional & scientific | 2018 |
| Navion Ltd | Wholesale & retail | 2022 |
| Navsa International Limited | Wholesale & retail | 2020 |
| Nawaz Consulting Ltd | Professional & scientific | 2026 |
| Nawc Limited | Construction | 2006 |
| Naxo Stbm Limited | Administrative & support | 2021 |
| Naxos Advisory Limited | Professional & scientific | 2018 |
| Naylak Limited | Wholesale & retail | 2010 |
| NAZ School of Motoring Ltd | Education | 2023 |
| Nazarus Limited | Arts & recreation | 2014 |
| Nazs&Co Ltd | Professional & scientific | 2025 |
| NB Property Holdings Limited | Real estate | 2015 |
| NBA Property Services Limited | Real estate | 2024 |
| NBE Prajapati Ltd | Professional & scientific | 2015 |
| Nbox Traders Ltd | Wholesale & retail | 2021 |
| Nbph 195 Q'Way Ltd | Real estate | 2018 |
| NBR Consultants Limited | Wholesale & retail | 2023 |
| NBR Printing Limited | Information & communication | 2012 |
| NBT Group Limited | Wholesale & retail | 1951 |
| NC & JC Construction Ltd | Construction | 2016 |
| NC & JC Leasing Limited | Administrative & support | 2018 |
| NC & JC Management Services Limited | Administrative & support | 2012 |
| NC & JC Properties Limited | Real estate | 2014 |
| NC Advisory (UK) LLP | | 2008 |
| NC Advisory Limited | Professional & scientific | 2006 |
| NCK Global Limited | Information & communication | 2025 |
| NCL Holdings Limited | Professional & scientific | 2000 |
| NCM Supply Limited | Transport & logistics | 2018 |
| Ncube Digital Limited | Information & communication | 2017 |
| NDA (Packaging Services) Ltd | Professional & scientific | 2003 |
| NDL Industries (UK) Ltd | Wholesale & retail | 2020 |
| Ndmk Ltd | Transport & logistics | 2022 |
| NDN32778674 Ltd | Information & communication | 2012 |
| Ndompharma Limited | Wholesale & retail | 2024 |
| NDR Bespoke Ltd | Information & communication | 2023 |
| NDS R&D&Consultancy Ltd | Wholesale & retail | 2019 |
| Ndsl Group Limited | Professional & scientific | 2000 |
| Ndsl Limited | Manufacturing | 1992 |
| Nduka Health Limited | Information & communication | 2024 |
| NE Bespoke Interiors Ltd | Construction | 2025 |
| NEA Arche IT Limited | Information & communication | 2016 |
| Neaa Investments Limited | Real estate | 2024 |
| Neal's Properties Ltd | Real estate | 2021 |
| Nearby Tavern Limited | Hospitality | 2025 |
| Neath Hill HUT Limited | Hospitality | 2022 |
| Neath Hill Service Centre Ltd | Wholesale & retail | 2024 |
| Neath Medicals Limited | Administrative & support | 2016 |
| Nebo Solutions Limited | Information & communication | 2023 |
| Nebur Nerik Limited | Real estate | 2021 |
| Nectarhealth Ltd | Health & social care | 2025 |
| Nectpay Ltd | Financial services | 2024 |
| Nedas Limited | Wholesale & retail | 2026 |
| Need Platform Limited | Information & communication | 2021 |
| Needs Matter Care Limited | Health & social care | 2023 |
| Neelkantha Holdings Limited | Financial services | 2023 |
| Neelkantha Investment Ltd | Financial services | 2024 |
| Neelkantha Limited | Professional & scientific | 2023 |
| Neem Travel Limited | Administrative & support | 2024 |
| Neenaali Ltd | Real estate | 2026 |
| Neeru Consultancy Limited | Information & communication | 2016 |
| Neesh Homes Limited | Real estate | 2021 |
| Neet Cuts Ltd. | Administrative & support | 2016 |
| Neete Holdings Limited | Wholesale & retail | 2019 |
| Neetewave Limited | Wholesale & retail | 2018 |
| Neeth Retail Limited | Wholesale & retail | 2017 |
| Neevasa Ltd | Real estate | 2025 |
| Nehasts Ltd | Information & communication | 2019 |
| Nehst Limited | Real estate | 2024 |
| Neil Caplan I.T. Limited | Information & communication | 2011 |
| Neil Fulton Limited | Education | 2026 |
| Neimax Ltd | Extraterritorial | 2025 |
| NEK Transport Ltd | Transport & logistics | 2019 |
| Nelson Ocean UK Ltd | Other services | 2017 |
| Nema Foods Ltd | Hospitality | 2022 |
| Nema Health Limited | Health & social care | 2020 |
| Nemoure Limited | Real estate | 1997 |
| Nendrasys Technologies UK Limited | Information & communication | 2011 |
| Nenip Limited | Construction | 2019 |
| Nentie Holdings Limited | Financial services | 2020 |
| NEO Arete Ltd | Wholesale & retail | 2024 |
| NEO Software Solutions Limited | Information & communication | 2017 |
| Neo-Sim Limited | Health & social care | 2013 |