| Norton Nurses Limited | Health & social care | 2007 |
| Norvilis Transport Ltd | Transport & logistics | 2022 |
| Norwood Farm Manco Limited | Households | 2022 |
| NOT Another Agency Limited | Professional & scientific | 2024 |
| NOT Another Jungle Ltd | Wholesale & retail | 2022 |
| NOT Just a ... Ltd | Hospitality | 2022 |
| NOT Just a Plumber Limited | Construction | 2011 |
| NOT Just a PUB Ltd | Hospitality | 2018 |
| NOT Normal Records Ltd | Information & communication | 2016 |
| NOT Social Ltd | Wholesale & retail | 2016 |
| Notary Northampton Limited | Professional & scientific | 2022 |
| Note AI Ltd | Information & communication | 2025 |
| Notebook Express Limited | Other services | 1998 |
| Notherns Fast Food Ltd | Hospitality | 2024 |
| Nottingham Private Intensive Care Services Limited | Health & social care | 2021 |
| Nottingham Wing Company Limited | Hospitality | 2023 |
| Nottinghill Hotel Limited | Hospitality | 2025 |
| Nourish and Shine Futures Ltd | Health & social care | 2020 |
| Nourishing Ltd | Hospitality | 2026 |
| Nouvelle London Limited | Wholesale & retail | 2018 |
| Nouvoa Ltd | Professional & scientific | 2025 |
| Nova Aesthetics Ltd | Health & social care | 2019 |
| Nova Cargo Ltd | Transport & logistics | 2025 |
| Nova Consult Ltd | Wholesale & retail | 2018 |
| Nova Employees Trustee Limited | Financial services | 2020 |
| Nova Film Productions Ltd | Information & communication | 2020 |
| Nova Home Solutions Ltd | Construction | 2026 |
| Nova Integrated Systems Limited | Construction | 2011 |
| Nova Security Consultants Ltd | Administrative & support | 2020 |
| Nova Security Protection International Limited | Administrative & support | 2010 |
| Nova Technical Limited | Administrative & support | 2022 |
| Novadio Ltd | Other services | 2025 |
| Novah Healthcare Ltd | Health & social care | 2023 |
| Novak Consulting Ltd | Professional & scientific | 2025 |
| Novanode Ltd | Wholesale & retail | 2026 |
| Novast Laboratories UK Limited | Manufacturing | 2024 |
| Novatech Labs Ltd | Information & communication | 2025 |
| Novelty Plus Limited | Information & communication | 2012 |
| Novera Energy (Holdings 2) Limited | Energy | 2004 |
| Novera Energy Generation NO. 1 Limited | Financial services | 1997 |
| Novera Energy Generation NO. 2 Limited | Energy | 1989 |
| Novera Energy Operating Services Limited | Administrative & support | 1988 |
| Novestrum Ltd | Wholesale & retail | 2023 |
| Novitas Analytics Limited | Professional & scientific | 2015 |
| Novjulaug Limited | Real estate | 2016 |
| Novo Creations Ltd | Real estate | 2024 |
| Novoerra Ltd | Wholesale & retail | 2020 |
| Novos Construction Ltd | Construction | 2023 |
| Novus Build Ltd | Construction | 2020 |
| Novus Digital Ltd | Administrative & support | 2019 |
| Novus Forge Limited | Professional & scientific | 2024 |
| Novus Logistics Ltd | Transport & logistics | 2019 |
| NOW NOW South African Food Co Limited | Manufacturing | 2014 |
| Nowaz Investments Ltd | Hospitality | 2018 |
| Nozcomms Limited | Information & communication | 2022 |
| NP Cable Jointing Ltd | Construction | 2025 |
| NP Digger and Paving Services Limited | Professional & scientific | 2019 |
| NPA Solutions Limited | Information & communication | 2000 |
| Npearson Electrical Limited | Construction | 2018 |
| NPS Consultants Limited | Professional & scientific | 2013 |
| NPS Recovery Limited | Transport & logistics | 2019 |
| NQY Property Limited | Real estate | 2017 |
| NR Accommodation Ltd | Administrative & support | 2023 |
| Nrcm Web Design Ltd | Information & communication | 2018 |
| Nrgreener Ltd | Real estate | 2018 |
| NRI Civils Ltd | Construction | 2012 |
| Nritta Kshetra - Temple of Dance Ltd | Arts & recreation | 2025 |
| NRS Aviation Ltd | Transport & logistics | 2019 |
| NRT Aviation Ltd | Professional & scientific | 2026 |
| NS Investment Northampton Ltd | Real estate | 2019 |
| Nseh 2023 Limited | Professional & scientific | 2023 |
| NSG Marketing Limited | Extraterritorial | 2024 |
| Nsixe Ltd | Information & communication | 2024 |
| NSK Fulfilment Ltd | Transport & logistics | 2022 |
| Nsprime Ltd | Transport & logistics | 2026 |
| NSR Property Management Ltd | Real estate | 2023 |
| NSS Care Ltd | Health & social care | 2026 |
| NT Bridal Limited | Wholesale & retail | 2021 |
| NT Property Group Limited | Wholesale & retail | 1999 |
| Ntacha Homes Ltd | Real estate | 2023 |
| Ntain Services Ltd | Information & communication | 2025 |
| Ntans Group Ltd | Transport & logistics | 2019 |
| Ntech Trading Limited | Wholesale & retail | 2025 |
| Ntest Limited | Energy | 2005 |
| Ntga Limited | Health & social care | 2023 |
| NTH Management Ltd | Hospitality | 2024 |
| NTT Travels Limited | Administrative & support | 2014 |
| Nu-Look Conservatory Roof Solutions Limited | Construction | 2013 |
| NUA Consulting Ltd | Information & communication | 2014 |
| NUA Homes Ltd | Real estate | 2020 |
| Nuage Vision Ltd | Professional & scientific | 2014 |
| Nucleus Selling Ltd | Information & communication | 2023 |
| Nudor Ltd | Construction | 2020 |
| Nuffield Productions Limited | Arts & recreation | 2014 |
| Nugeb Limited | Transport & logistics | 2023 |
| Nuline Care Ltd | Health & social care | 2025 |
| Nullone Limited | Professional & scientific | 2022 |
| Number 9 Dental Care Limited | Health & social care | 2014 |
| Number 92 Limited | Hospitality | 2019 |
| Number One Trans Ltd | Construction | 2018 |