| Naturegraphy Studios Ltd | Information & communication | 2024 |
| Natureslens Limited | Administrative & support | 2017 |
| Natursense Ltd | Wholesale & retail | 2025 |
| Naturspirits Ltd | Wholesale & retail | 2025 |
| Navkar Limited | Real estate | 2023 |
| Nayra Bright Limited | Hospitality | 2026 |
| NAZ Beauty Studio Limited | Other services | 2024 |
| NAZ Education Ltd | Education | 2025 |
| Naza Tech Ltd | Information & communication | 2018 |
| Nazar & Sons Limited | Transport & logistics | 2020 |
| Nb.Aesthetics Ltd | Health & social care | 2024 |
| Ncamh LLP | | 2024 |
| Ncamh Training Ltd | Education | 2022 |
| Ncct Consultants Ltd | Financial services | 2022 |
| Ncct Eco Limited | Construction | 2012 |
| Ncct FM Limited | Construction | 2022 |
| Ncct Group Limited | Construction | 2022 |
| Ncct Holdings Limited | Construction | 2022 |
| Ncct Limited | Construction | 2005 |
| Ncct Plant Limited | Administrative & support | 2023 |
| Ncct Plumbers Limited | Construction | 2012 |
| Ncct Properties Limited | Real estate | 2012 |
| Ncct Transport & Logistics Limited | Administrative & support | 2023 |
| Nd&Jd Limited | Wholesale & retail | 2025 |
| Ndri Limited | Construction | 2017 |
| Nearload Limited | Professional & scientific | 2026 |
| Necoo Ltd | Professional & scientific | 2026 |
| Nedovi Healt Ltd | Health & social care | 2026 |
| Nehemiah's Projects Limited | Real estate | 2024 |
| Nehf Property Services Ltd | Real estate | 2025 |
| Nell's Cafe Ltd | Hospitality | 2016 |
| Nemes Diving and Water Sports Academy Limited | Arts & recreation | 2009 |
| Nemo Group UK Limited | Construction | 2024 |
| Nemuso Ltd | Arts & recreation | 2025 |
| NEO Evolutions TCC Ltd | Wholesale & retail | 2025 |
| Neon Picturehouse Ltd | Information & communication | 2021 |
| Neostats Analytics Solutions Ltd | Information & communication | 2022 |
| Neptune Close Management Limited | Real estate | 1987 |
| Nerijus Bajorunas Ltd | Professional & scientific | 2019 |
| Nerijus Carpenter Ltd | Construction | 2018 |
| Nero Global Resources Ltd | Other services | 2020 |
| Neso Consulting Ltd | Information & communication | 2014 |
| Nesoi Travel Ltd | Administrative & support | 2020 |
| Nesta Tourism for Beauty Ltd | Administrative & support | 2016 |
| Nettch Ltd | Hospitality | 2025 |
| Networkparagon Infrastructure Solutions Ltd | Information & communication | 2026 |
| Neuchatel SE6 Ltd | Construction | 2025 |
| Nevo Construction Limited | Construction | 2021 |
| New ASH Green Pre-School Ltd | Education | 2012 |
| New Barn Autos Ltd | Wholesale & retail | 2025 |
| New Barn Park Management Limited | Households | 1984 |
| New British Caledonian Airways Ltd | Transport & logistics | 2015 |
| New British Caledonian Ltd | Transport & logistics | 2015 |
| New Circle Properties Ltd | Real estate | 2024 |
| New Dawn Recruitment Agency (Dartford) Ltd | Health & social care | 2019 |
| New Deli Coffee and Tea Ltd | Wholesale & retail | 2025 |
| New Life 46 Ltd | Hospitality | 2024 |
| New Mind Nursery Ltd | Education | 2021 |
| New Moon Staffing Limited | Administrative & support | 2022 |
| New Road Grocery Limited | Wholesale & retail | 2026 |
| New Stars Barbers Ltd | Other services | 2025 |
| New YORK3RS Ltd | Hospitality | 2024 |
| Newdeal Investments Limited | Real estate | 1997 |
| Newman Group Holdings Limited | Real estate | 2020 |
| Newness Ventures Ltd | Health & social care | 2022 |
| Newnham Lodge Management Company Limited | Households | 1992 |
| Newton Heath Dayal Limited | Wholesale & retail | 2023 |
| Nexa Commerce Apps Ltd | Information & communication | 2025 |
| Nexgen Property Investors Limited | Hospitality | 2024 |
| Next Day Digital Ltd | Information & communication | 2023 |
| Next Real Estate Limited | Construction | 2025 |
| Next Steps Recruitment Ltd | Administrative & support | 2024 |
| Nexter Homes Ltd | Real estate | 2024 |
| Nextgen Holdings and Development Limited | Real estate | 2024 |
| Neyland House Management Company Limited | Households | 1982 |
| Neyon Foods Solution Ltd | Wholesale & retail | 2024 |
| NFC Peri Ltd | Hospitality | 2024 |
| Nfuller Consulting Limited | Information & communication | 2018 |
| NG Brokerage Limited | Real estate | 2026 |
| Ng-Training Limited | Administrative & support | 2013 |
| Ngalulab Limited | Health & social care | 2024 |
| NHD Solutions Limited | Real estate | 2025 |
| Nice Life Ltd | Health & social care | 2014 |
| Niche Mechanical Services Limited | Construction | 2015 |
| Nicholson & Keep Limited | Wholesale & retail | 2013 |
| Nick Construction Group Limited | Construction | 2021 |
| Nick Oakley Estates Limited | Real estate | 2025 |
| Nick Westlake Electrical Ltd | Construction | 2012 |
| Nickflicks Ltd | Information & communication | 2014 |
| Nick’S Recovery Limited | Transport & logistics | 2023 |
| Niclar Limited | Education | 1999 |
| Nicol Trifoi Limited | Transport & logistics | 2017 |
| Nicovas Construct Ltd | Construction | 2025 |
| Nicu Vlad Logistics Team Manav Ltd | Transport & logistics | 2021 |
| Nightlife Group Limited | Other services | 2019 |
| Nihang Properties Ltd | Real estate | 2026 |
| Nikki Leach Ltd. | Education | 2010 |
| Nikko Limited | Households | 2022 |
| Nikko Trans Ltd | Transport & logistics | 2019 |
| Nimble Ventures Limited | Information & communication | 2020 |