| Natully Productions Ltd | Information & communication | 2025 |
| Naturaderma Ltd | Wholesale & retail | 2025 |
| Natural Tree Therapy Ltd | Other services | 2019 |
| Naturavape Ltd | Manufacturing | 2024 |
| Naturehearted Care Services Ltd | Public administration | 2026 |
| Nautix Marine Ltd | Professional & scientific | 2025 |
| Nava 1 Limited | Administrative & support | 1995 |
| Navilon Ltd | Wholesale & retail | 2025 |
| Navon Ltd | Wholesale & retail | 2026 |
| Navy Goos Properties Ltd | Real estate | 2026 |
| Navzar Universal Ltd | Manufacturing | 2021 |
| Nawroz Lounge (Finchley) Limited | Hospitality | 2023 |
| Naya Investment Limited | Real estate | 1998 |
| NAZ Domi Properties Limited | Real estate | 2025 |
| NAZ Toyz Limited | Wholesale & retail | 2026 |
| NAZ Trimz Ltd | Other services | 2025 |
| Nazarian Limited | Wholesale & retail | 2010 |
| Naze Ltd | Arts & recreation | 2024 |
| Nazmin Properties Limited | Real estate | 2025 |
| NC Lupu Ltd | Construction | 2010 |
| NC1 Plastering Limited | Construction | 2022 |
| Ncck Ltd | Hospitality | 2020 |
| ND Planning Solutions Limited | Professional & scientific | 2020 |
| NDS BS Ltd | Construction | 2012 |
| NEA Events UK Ltd | Administrative & support | 2026 |
| Neat Homes 18 Ltd | Real estate | 2022 |
| Neat Meat Limited | Wholesale & retail | 2024 |
| Nebula Europe Travel Limited | Administrative & support | 2008 |
| Needgas.Co.Uk Limited | Energy | 2020 |
| Needlecare Limited | Health & social care | 2025 |
| Neerkanne Limited | Real estate | 2025 |
| Neeso Limited | Health & social care | 2022 |
| Neeta Ltd | Professional & scientific | 2025 |
| Neev Portfolio Ltd | Real estate | 2024 |
| Neighbour Build Ltd | Construction | 2025 |
| Neighbourhood Goods Ltd | Wholesale & retail | 2025 |
| NEK Gica Ltd | Construction | 2009 |
| Nekgica Properties Ltd | Real estate | 2025 |
| Nekit Ltd | Construction | 2022 |
| Nelar Studios Limited | Information & communication | 2026 |
| Nemor Services Limited | Transport & logistics | 2025 |
| NEO Saloon Ltd | Other services | 2022 |
| Neor Ltd | Hospitality | 2024 |
| Neosap Ltd | Information & communication | 2018 |
| Neovex Capital Ltd | Financial services | 2026 |
| Nepasa Limited | Real estate | 2018 |
| Neptune Bargains Limited | Wholesale & retail | 2011 |
| Neptune Global Solutions Ltd | Information & communication | 2024 |
| Neridio Systems Ltd | Information & communication | 2022 |
| Nero Plumbing & Heating Ltd | Construction | 2018 |
| Neskop Ltd | Real estate | 2018 |
| Nestal Limited | Professional & scientific | 2014 |
| Nestal Property Limited | Real estate | 2025 |
| NET TRY Food City Ltd | Wholesale & retail | 2026 |
| Netlighting Limited | Wholesale & retail | 2007 |
| Netofa Limited | Administrative & support | 2020 |
| Nettry UK Ltd | Wholesale & retail | 2011 |
| Network Bridge Solutions Limited | Information & communication | 2003 |
| Neuramed Health Ltd | Information & communication | 2026 |
| Neuroeye Ltd | Health & social care | 2015 |
| Neuros Clinic London Ltd | Other services | 2025 |
| Nevern Place Property Company Limited | Real estate | 2025 |
| New Afro Traders Ltd | Wholesale & retail | 2013 |
| New Ahmad Halal Meat Ltd | Wholesale & retail | 2025 |
| New Canton Limited | Hospitality | 2022 |
| New Churton Properties Limited | Real estate | 2011 |
| New Clean Dealership Services Limited | Administrative & support | 2010 |
| New Dawn Security & Training Limited | Administrative & support | 2009 |
| New Elegance Ltd | Other services | 2022 |
| New Forest Management Limited | Real estate | 2020 |
| New Gloucester Limited | Administrative & support | 2025 |
| New Golden Star ( Tullibody ) Ltd | Hospitality | 2024 |
| New Green Cabin UK Ltd | Wholesale & retail | 2026 |
| New Heights Investments Ltd | Real estate | 2024 |
| New Heights Training Ltd | Education | 2023 |
| New Heungyang Ltd | Hospitality | 2024 |
| New Kent Group Limited | Financial services | 2025 |
| New Kent Properties Limited | Real estate | 2025 |
| New Lacky Food & Wine Limited | Wholesale & retail | 2012 |
| New Multi Traders Ltd | Wholesale & retail | 2021 |
| New Visions Media Ltd | Information & communication | 2020 |
| New Web Trading Ltd | Wholesale & retail | 2019 |
| New Willow Management Limited | Households | 2018 |
| New World Rites Limited | Education | 2015 |
| Newco Housing Ltd | Real estate | 2026 |
| Newdev Limited | Other services | 2014 |
| Newdom Ltd | Construction | 2015 |
| Newell Glass & Design Limited | Manufacturing | 2009 |
| Newell Glass & Locks Limited | Construction | 2018 |
| Newhmbuilders Limited | Manufacturing | 2025 |
| Newlands Property Investments Limited | Real estate | 2011 |
| Newman Marketing Limited | Extraterritorial | 2015 |
| Newmans Accountancy Services Limited | Professional & scientific | 2014 |
| Newmans ADS Limited | Professional & scientific | 2023 |
| Newnext Limited | Wholesale & retail | 2024 |
| Newscentre (Woodley) Limited | Wholesale & retail | 2004 |
| NEWTHIN8 Ltd | Information & communication | 2022 |
| Newton Leys Dental Clinic Limited | Health & social care | 2025 |
| Newyorkpizza Ltd | Hospitality | 2026 |
| Nexa Advisory Ltd | Hospitality | 2025 |