| Nepali Books and Handicrafts Limited | Wholesale & retail | 2025 |
| Nepsource Spirulina Farm Ltd | Agriculture & fishing | 2023 |
| Neptune UK Services Ltd | Construction | 2019 |
| Nera Accounting Limited | Professional & scientific | 2016 |
| Nerd Cave Ltd | Wholesale & retail | 2025 |
| Nerijus Move Ltd | Transport & logistics | 2024 |
| Neritrans Ltd | Transport & logistics | 2015 |
| Nerouz Ltd | Hospitality | 2025 |
| Nesacorp Ltd | Wholesale & retail | 2021 |
| Ness M Care Foundation Limited | Health & social care | 2015 |
| Nest Electrical Group Limited | Construction | 2020 |
| Nest Facilities Group Ltd | Professional & scientific | 2022 |
| Nest Friends Property Ltd | Real estate | 2024 |
| Nest Property Improvements, Renovations & Maintenance Ltd | Construction | 2016 |
| Nest Property Lettings Ltd | Real estate | 2022 |
| Nestkuest Limited | Real estate | 2022 |
| Nestled Haven Cambridge Ltd | Real estate | 2025 |
| Nestovia Ltd | Wholesale & retail | 2025 |
| NET Assured Limited | Information & communication | 2015 |
| Netadve Ltd | Professional & scientific | 2023 |
| Netexonline Ltd | Wholesale & retail | 2025 |
| Netheravon (Choulston) Residents Company Limited | Households | 2026 |
| Netherton United Football Club Limited | Arts & recreation | 2007 |
| Netsupport Ltd. | Information & communication | 1989 |
| Netsupport Software Ltd. | Information & communication | 1997 |
| Netsync Ltd | Information & communication | 2026 |
| Nettleham Chase Phase 2 Management Company Limited | Households | 2025 |
| Network 21 Group Limited | Professional & scientific | 1999 |
| Network Engineering Solutions Ltd | Information & communication | 2019 |
| Networkteamuk Limited | Wholesale & retail | 2024 |
| Networth Trade Ltd | Real estate | 2026 |
| Netwuc Ltd | Extraterritorial | 2022 |
| Neuss Ltd | Financial services | 2020 |
| Neutrend Building Maintenance Limited | Administrative & support | 2017 |
| Never Slack Ltd | Professional & scientific | 2016 |
| Neves Pinto Assets Limited | Financial services | 2026 |
| Neville Property Investments Ltd | Financial services | 2025 |
| Nevis Images Ltd | Information & communication | 2011 |
| New Bold Associates Limited | Administrative & support | 2016 |
| New Century Business Services Limited | Professional & scientific | 2016 |
| New Communications Ltd | Information & communication | 2020 |
| New Crystal Care Limited | Administrative & support | 2019 |
| New ERA Homes Limited | Real estate | 2023 |
| New Golden Dragon PE1 Limited | Hospitality | 2022 |
| New Homez Ltd | Construction | 2021 |
| New Hope Project Ltd | Real estate | 2016 |
| New Horizon Consultancy UK Limited | Information & communication | 2006 |
| New Horizon Healthcare Solutions Limited | Health & social care | 2011 |
| New Horizons Nationwide CIC | Other services | 2025 |
| New Image Office Design Limited | Wholesale & retail | 2002 |
| New International S S Ltd | Wholesale & retail | 2022 |
| New International Super Store Ltd | Wholesale & retail | 2025 |
| New Lane Logistics Ltd | Transport & logistics | 2019 |
| New Lodge Veterinary Centre Limited | Professional & scientific | 2003 |
| New Modellers Ltd | Administrative & support | 2008 |
| New Modellers Shop Ltd | Wholesale & retail | 2008 |
| New Road Barbers Ltd | Other services | 2025 |
| New Smart Trading Ltd | Wholesale & retail | 2023 |
| New Socks Media Limited | Information & communication | 2019 |
| New Top Chef Ltd | Hospitality | 2022 |
| New Vend Ltd | Wholesale & retail | 2020 |
| New Vision-Smart Legal Solutions Ltd | Professional & scientific | 2020 |
| New WOK Inn Ltd | Hospitality | 2023 |
| New World Express 2023 Ltd | Hospitality | 2023 |
| New-Id Coaching & Consulting Ltd | Professional & scientific | 2020 |
| Newark Avenue Block Management Limited | Households | 2006 |
| Newark MOT Centre Ltd | Wholesale & retail | 2022 |
| Newbigini Ltd | Professional & scientific | 2025 |
| Newborough Coaches Limited | Transport & logistics | 1965 |
| Newborough Limited | Wholesale & retail | 2009 |
| Newco Property Limited | Real estate | 2022 |
| Newell Holding U.K. Limited | Real estate | 2024 |
| Newell Scaffolding Hire Ltd | Administrative & support | 2025 |
| Newflame Fire Equipment Co. Limited | Public administration | 1981 |
| Newgen Technology Ltd | Information & communication | 2026 |
| Newheart Learning Ltd | Education | 2025 |
| Newmic Ltd | Professional & scientific | 2024 |
| Newport (Chapman Close) Residents Company Limited | Households | 2005 |
| Newport Media Ltd | Arts & recreation | 2025 |
| Newsco Software Limited | Information & communication | 1990 |
| Newsoft Group Ltd | Information & communication | 2019 |
| Newspaper Club Limited | Information & communication | 2009 |
| Newton Baker Holdings Ltd | Real estate | 2019 |
| Newton Medical Limited | Education | 2008 |
| Nexith Digital Ltd | Professional & scientific | 2026 |
| Nexor Solutions Ltd | Transport & logistics | 2026 |
| Nexortechuk Ltd | Wholesale & retail | 2025 |
| Nexoryx Limited | Information & communication | 2026 |
| Nexsig Ltd | Information & communication | 2025 |
| Next Drop Logistics Ltd | Transport & logistics | 2025 |
| Next GEN Properties (EA) Ltd | Real estate | 2025 |
| Next Level Barbell Club Limited | Arts & recreation | 2024 |
| Next Level Fibreoptics Ltd | Information & communication | 2022 |
| Next Level Utilities Academy Ltd | Education | 2026 |
| Next Move Real Estate Agents Ltd | Real estate | 2018 |
| Next Move Services Ltd | Households | 2020 |
| Next One Shop Ltd | Wholesale & retail | 2025 |
| Next Steps Community Care Ltd | Health & social care | 2006 |
| Nextep Trading Co Limited | Wholesale & retail | 2021 |
| Nextera PVT Ltd | Wholesale & retail | 2026 |