| Natty Group UK Limited | Financial services | 2025 |
| Natural BED Company Limited | Wholesale & retail | 2018 |
| Natural Granite Limited | Construction | 2009 |
| Natural INK Ltd | Other services | 2025 |
| Natural Sciences Museum Auxiliary Enterprises Ltd | Wholesale & retail | 2025 |
| Natural Sciences Museum Research Ltd | Professional & scientific | 2025 |
| Natural Selection Tuition Ltd | Education | 2023 |
| Natural Spice House Ltd | Hospitality | 2026 |
| Naturalcarenc Ltd | Wholesale & retail | 2025 |
| Naturally Wild Consultants Ltd | Professional & scientific | 2000 |
| Nature Actives Ltd | Wholesale & retail | 2025 |
| Nature's Nibbles Ltd | Real estate | 2020 |
| Nature's Way (Fulwood) Limited | Wholesale & retail | 2019 |
| Natureguides Ltd | Wholesale & retail | 1994 |
| Naty Transport Limited | Transport & logistics | 2024 |
| Naughton Steers Joinery Services Limited | Construction | 2006 |
| Naughty Bytes Studio Limited | Professional & scientific | 2024 |
| Nautilus Productions Limited | Information & communication | 2011 |
| NAV Consult Ltd | Professional & scientific | 2025 |
| Navigation Dobcross Limited | Hospitality | 2025 |
| Navigo Insure Ltd | Information & communication | 2025 |
| Navona Imaging Ltd | Health & social care | 2019 |
| Nawaz & Co. Trading Ltd | Wholesale & retail | 2025 |
| Nayabs Desserts Ltd | Hospitality | 2026 |
| Nayantog Ltd | Wholesale & retail | 2025 |
| Naylo Systems Ltd | Wholesale & retail | 2026 |
| Nayyaimports Limited | Wholesale & retail | 2026 |
| Naz&Jules Ltd | Professional & scientific | 2022 |
| Nazarov Investments Limited | Hospitality | 2020 |
| Nazir HML Properties Limited | Real estate | 2026 |
| Nazmul I Choudhury Ltd | Transport & logistics | 2026 |
| NB Acoustics Limited | Professional & scientific | 2020 |
| NB and CDK Joint Ventures Limited | Real estate | 2017 |
| NB Medical Innovation Ltd | Professional & scientific | 2019 |
| NBG Healthcare Limited | Health & social care | 2024 |
| Nbroid & Print Limited | Manufacturing | 2011 |
| NBW Estates Ltd | Real estate | 2026 |
| NC Quality Care Consultancy Ltd | Professional & scientific | 2025 |
| Nc.Pro Ltd | Construction | 2022 |
| Ncha Limited | Other services | 2008 |
| Nckkiesplace Limited | Other services | 2025 |
| Nclosures Ltd | Manufacturing | 2021 |
| Ncns Limited | Information & communication | 2009 |
| NCR Asset Management Limited | Administrative & support | 2017 |
| NCT Eyecare Ltd | Health & social care | 2019 |
| Ncthechef Ltd | Hospitality | 2026 |
| ND Landscaping Ltd | Real estate | 2025 |
| ND Media Holdings Ltd | Other services | 2024 |
| ND Safety Limited | Professional & scientific | 1999 |
| ND Transformative Coaching Ltd | Extraterritorial | 2024 |
| Ndbeautyluxe Limited | Other services | 2026 |
| Ndcvc Ltd | Real estate | 1996 |
| Ndependent Expediting Limited | Professional & scientific | 2017 |
| NDH Recruitment Ltd | Administrative & support | 2022 |
| Ndlovuu Ltd | Health & social care | 2022 |
| NDO Holdings Ltd | Professional & scientific | 2025 |
| Ndreka Limited | Hospitality | 2023 |
| NDT Offshore Services Ltd | Other services | 2006 |
| Ndtss Limited | Administrative & support | 2015 |
| NDW Facilities Limited | Administrative & support | 2026 |
| NE Commercial MRF Ltd | Water & waste | 2025 |
| Neal Bradshaw - Biomedical Consultancy Ltd | Professional & scientific | 2023 |
| Neal's Inns Ltd | Hospitality | 2020 |
| Neale Holdings Ltd | Professional & scientific | 2020 |
| Neall Alexander's (Doncaster) Ltd | Professional & scientific | 2007 |
| Neapolitan Group Limited | Hospitality | 2023 |
| Near Wild Heaven Limited | Wholesale & retail | 2025 |
| Nearing Ithaka Limited | Professional & scientific | 2025 |
| Nebikom Enterprises Ltd | Wholesale & retail | 2015 |
| Nebula Ceramics Limited | Wholesale & retail | 2025 |
| Nebula Fest Limited | Arts & recreation | 2025 |
| Nebula Recruitment Limited | Administrative & support | 2022 |
| Nebulink Limited | Information & communication | 2025 |
| Neck of the Wood Studio Limited | Arts & recreation | 2023 |
| Necker Ltd | Real estate | 2024 |
| Nectar Consultancy Ltd | Professional & scientific | 2026 |
| Nectar Rays Limited | Wholesale & retail | 2019 |
| Nectar Rays Properties Ltd | Real estate | 2025 |
| Necter Limited | Hospitality | 2019 |
| NED Laudrup Ltd | Hospitality | 2025 |
| Need My Phone Repair Ltd | Wholesale & retail | 2021 |
| Neel Kevat Ltd | Wholesale & retail | 2025 |
| Neepsend Brewery Ltd | Manufacturing | 2015 |
| Neepsend Brunch Club Ltd | Hospitality | 2022 |
| Neepsend Cast Components Limited | Manufacturing | 1990 |
| Neepsend Holding Ltd | Financial services | 2024 |
| Neepsend Limited | Extraterritorial | 1920 |
| Neepsend Property Limited | Real estate | 1990 |
| Neepsend Recycling Limited | Water & waste | 2015 |
| Neepsend Supplies Ltd | Wholesale & retail | 2015 |
| Neil & Steve’S Limited | Wholesale & retail | 2024 |
| Neil Anderson Media Limited | Administrative & support | 2003 |
| Neil Coombes Solicitor Limited | Professional & scientific | 2009 |
| Neil Heath (Doncaster) Limited | Wholesale & retail | 1963 |
| Neil Walker Accountancy Ltd | Professional & scientific | 2020 |
| Neill Tool Group Limited | Extraterritorial | 1997 |
| Neill Tools Limited | Manufacturing | 1958 |
| Neilson Hydraulics & Engineering Limited | Manufacturing | 2006 |
| NEJ Property Limited | Real estate | 2017 |
| Neja Risk and Security Consulting Ltd | Administrative & support | 2024 |