| Nativ Capital Limited | Professional & scientific | 2026 |
| Nato Limited | Manufacturing | 2022 |
| Natural Stone by Safa Limited | Manufacturing | 2020 |
| Nature Shield UK Limited | Manufacturing | 2025 |
| Nature's Buddy Ltd | Wholesale & retail | 2019 |
| Natureshine Ltd | Administrative & support | 2025 |
| Naughty Pizza Ltd | Hospitality | 2020 |
| Naum Holdings Limited | Financial services | 2025 |
| Naurah Tour & Services UK Ltd | Other services | 2025 |
| Nautikelaw Ltd | Financial services | 2023 |
| Navbhumi Limited | Real estate | 2011 |
| NAVY8R Consulting Ltd | Transport & logistics | 2020 |
| Nawrooz UK Limited | Administrative & support | 2019 |
| Naxtrad Limited | Real estate | 2016 |
| Naydan Properties Ltd | Real estate | 2024 |
| NAZ Bedford Limited | Hospitality | 2015 |
| Nazare Solutions Ltd | Administrative & support | 2016 |
| Nazli Trading UK Ltd | Wholesale & retail | 2025 |
| Nazneen Consultancy Ltd | Information & communication | 2024 |
| NB Acting Ltd | Education | 2022 |
| Nbfusion Ltd | Hospitality | 2025 |
| NBP Site Services Limited | Construction | 2025 |
| NBS Cars & Transport Ltd | Wholesale & retail | 2025 |
| NBS Coaching & Hypnosis Ltd | Education | 2023 |
| NCC Cleaning Service Ltd | Real estate | 2023 |
| NCJ Power Ltd | Professional & scientific | 2023 |
| NCL Motors Ltd | Wholesale & retail | 2017 |
| NCM Property Investment Ltd | Real estate | 2025 |
| NCT Property Management Ltd | Real estate | 2021 |
| Ncvc Construction Ltd | Administrative & support | 2019 |
| ND2016 Property Ltd | Real estate | 2016 |
| NDO Consultants Limited | Wholesale & retail | 2007 |
| Nduba P-E Jesty Ltd | Wholesale & retail | 2023 |
| NE Details Ltd | Wholesale & retail | 2024 |
| Ne-Farm Limited | Wholesale & retail | 2025 |
| Neat & Noble Cleaning Services Ltd | Administrative & support | 2026 |
| Neat Price Ltd | Wholesale & retail | 2021 |
| Necessity Services Ltd | Information & communication | 2015 |
| Neculai Cuvliuc Ltd | Transport & logistics | 2026 |
| Need a Sparky Ltd | Construction | 2025 |
| Need More Time Limited | Administrative & support | 2000 |
| Neeki’S Barbers Ltd | Other services | 2025 |
| Neelchem Limited | Wholesale & retail | 2001 |
| Neem Tree Ventures Limited | Wholesale & retail | 2017 |
| Neesa Limited | Hospitality | 2019 |
| Neetex Ltd | Wholesale & retail | 2022 |
| Negmeldin Limited | Health & social care | 2025 |
| Neighbourhood Health Group Limited | Administrative & support | 2025 |
| Neil Saunders Limited | Construction | 2026 |
| Nella KAY Properties Ltd | Real estate | 2024 |
| Neller Davies Limited | Professional & scientific | 2005 |
| Nelu Construction Services Limited | Construction | 2018 |
| Nemov Ltd | Information & communication | 2015 |
| Nene Valley Developments Limited | Construction | 2022 |
| Nene Valley Homes Ltd | Real estate | 2008 |
| Neon Marl Limited | Manufacturing | 2019 |
| Neon Recruitment Ltd | Administrative & support | 2019 |
| Neonhorizon Ltd | Information & communication | 2017 |
| Neosee Limited | Information & communication | 2026 |
| Neotech Services Limited | Information & communication | 2015 |
| Nera Consulting Limited | Professional & scientific | 2024 |
| Nero Blanco IT Limited | Administrative & support | 2012 |
| NET Position Limited | Information & communication | 2017 |
| Net.Padel Limited | Arts & recreation | 2025 |
| Netaccess I-Ax Limited | Information & communication | 2001 |
| Netaccess Limited | Professional & scientific | 1996 |
| Netaccess Software Limited | Information & communication | 1998 |
| Netcall PLC | Professional & scientific | 1984 |
| Netcall Systems Limited | Administrative & support | 1998 |
| Netcall Technology Limited | Information & communication | 1993 |
| Netcall Telecom Limited | Information & communication | 1985 |
| Netlux Group Ltd | Administrative & support | 2022 |
| Netlux Ltd | Transport & logistics | 2022 |
| Netrevolutionuk Ltd | Information & communication | 2021 |
| Netsol Computing Limited | Information & communication | 2006 |
| Nettonic Ltd | Information & communication | 2012 |
| Network Global Logistics Ltd | Wholesale & retail | 2021 |
| Network Knowledge Limited | Information & communication | 1997 |
| Network Pro Developments Limited | Real estate | 2020 |
| Neumann Systems Ltd | Professional & scientific | 2025 |
| Neural Technology Consulting Limited | Professional & scientific | 2019 |
| Neurofluent Ltd | Professional & scientific | 2026 |
| Neuromotion LAB Ltd | Manufacturing | 2023 |
| Neville Musk Property Limited | Real estate | 2025 |
| New Blue Chip Limited | Information & communication | 2016 |
| New Build Home Snagging Limited | Construction | 2025 |
| New Cardington Estate Management Company Limited | Households | 2010 |
| New Edge Development Solutions Limited | Professional & scientific | 2013 |
| New English Skates Limited | Wholesale & retail | 1997 |
| New Farm Limited | Agriculture & fishing | 2003 |
| New Form Living Renovations and Interior Design Ltd | Construction | 2026 |
| New Generation Media Group Ltd | Information & communication | 2026 |
| New Generation Supply Limited | Wholesale & retail | 2025 |
| New Habits Mindset Shifts Ltd | Other services | 2025 |
| New Line Films Limited | Information & communication | 2009 |
| New Moon Safeguarding Services Ltd | Professional & scientific | 2021 |
| New Moulton Stores Ltd | Wholesale & retail | 2018 |
| New MR Chips Ltd | Hospitality | 2008 |
| New Popeyes Ltd | Hospitality | 2024 |
| New Rise Enterprise Limited | Real estate | 2021 |