| Noor Fast Food Limited | Hospitality | 2019 |
| Noor Kianat Limited | Hospitality | 2025 |
| Noor Luton Ltd | Hospitality | 2025 |
| Noor Takeaway Ltd | Hospitality | 2025 |
| Noorindian Ltd | Hospitality | 2024 |
| Nootropics Ventures Limited | Hospitality | 2025 |
| Nopac Midlands Limited | Other services | 2003 |
| Nopalaver Construction Ltd | Extraterritorial | 2012 |
| Nopalaver Contractors Limited | Administrative & support | 2008 |
| Nopalaver Limited | Extraterritorial | 2015 |
| Nopalaver Payroll Solutions Ltd | Administrative & support | 2006 |
| NOR Services Ltd | Transport & logistics | 2024 |
| Norash Co Ltd | Health & social care | 2017 |
| Norfolk Avenue Investments LLP | | 2021 |
| Norlock Limited | Transport & logistics | 2020 |
| Normally Ltd | Information & communication | 2014 |
| Norpak AS Ltd | Wholesale & retail | 2024 |
| Norscat Limited | Professional & scientific | 2015 |
| Norse Vape Ltd | Wholesale & retail | 2021 |
| Nortel Ltd | Information & communication | 2025 |
| North Bucks Range Limited | Arts & recreation | 2019 |
| North Eagle Ltd | Manufacturing | 2019 |
| North Gunwharf Hospitality Ltd | Hospitality | 2025 |
| North Pole Cleaning Ltd | Other services | 2019 |
| North ROW Partners Limited | Real estate | 2019 |
| North Star Case Management Ltd | Health & social care | 2017 |
| North Star Nook Ltd | Information & communication | 2023 |
| Northampton Dental Hub Limited | Health & social care | 2024 |
| Northampton DH Properties Limited | Real estate | 2023 |
| Northampton Holdings Ltd | Real estate | 2025 |
| Northampton Pizza Ltd | Hospitality | 2021 |
| Northampton Regeneration Partnership Limited | Construction | 2009 |
| Northampton Sushi Ltd | Wholesale & retail | 2024 |
| Northamptonshire Ymca | Hospitality | 1994 |
| Northants Aerial Services Limited | Information & communication | 2026 |
| Northants Flooring Limited | Administrative & support | 2010 |
| Northants Light Haulage Limited | Transport & logistics | 2011 |
| Northaven Advisory Limited | Professional & scientific | 2025 |
| Northcote Road LLP | | 2020 |
| Northern Britain Property Partners LP | | 2005 |
| Northern Forge AI Limited | Information & communication | 2025 |
| Northern GAS Heating Limited | Construction | 2000 |
| Northern Norman Limited | Construction | 2017 |
| Northern Van Systems Ltd | Manufacturing | 2024 |
| Northline Luggage Ltd | Wholesale & retail | 2026 |
| Northridge Designs Limited | Information & communication | 2019 |
| Northshore Studio Limited | Professional & scientific | 2019 |
| Northwick Marshall Consulting Limited | Information & communication | 2022 |
| Northwood Oxford Ltd | Real estate | 2013 |
| Norton Jones Services Ltd | Construction | 2013 |
| Norton Marshall Ltd | Construction | 2020 |
| Norvert Holdings UK Ltd | Manufacturing | 2010 |
| Noslib Ltd | Construction | 2011 |
| Nossh & Co Limited | Wholesale & retail | 2022 |
| NOT Your Typical Ventures Ltd | Information & communication | 2012 |
| Notebooks UK Limited | Professional & scientific | 2008 |
| Notelddim Limited | Information & communication | 2019 |
| NOTES4U Ltd | Professional & scientific | 2018 |
| Nothing Wasted Ltd | Information & communication | 2020 |
| Notional Technology Ltd | Information & communication | 2017 |
| Notkat Care Services UK Ltd | Health & social care | 2023 |
| Notting Hill Benefits Ltd | Professional & scientific | 2026 |
| Notting Hill Lofts Ltd | Real estate | 2019 |
| Nottingham Audio Visual Services Limited | Wholesale & retail | 1967 |
| Nottingham DH Properties Limited | Real estate | 2025 |
| Nouafast Ltd | Hospitality | 2023 |
| Nour Maison Ltd | Hospitality | 2024 |
| Nourdine Limited | Health & social care | 2021 |
| Nourish and Glow Nutrition & Beauty Ltd | Other services | 2025 |
| Nourished Foods Ltd | Wholesale & retail | 2021 |
| Nouveau Départ Limited | Wholesale & retail | 2020 |
| Nouveau Photography Ltd | Professional & scientific | 2023 |
| Nova ARK Limited | Administrative & support | 2017 |
| Nova Camp CIC | Information & communication | 2025 |
| Nova Car Service Ltd | Transport & logistics | 2026 |
| Nova Developments (Reading) Limited | Real estate | 2014 |
| Nova Five Ltd | Real estate | 2024 |
| Nova Four Ltd | Real estate | 2014 |
| Nova Holiday Homes Ltd | Real estate | 2026 |
| Nova Logic Ltd | Transport & logistics | 2014 |
| Nova London General Services Ltd | Administrative & support | 2025 |
| Nova One Ltd | Real estate | 2014 |
| Nova Polewear Ltd | Wholesale & retail | 2024 |
| Nova Property Development Group Ltd | Construction | 2026 |
| Nova Property Investments Ltd | Real estate | 2014 |
| Nova Protection Limited | Administrative & support | 2016 |
| Nova Salus Ltd | Health & social care | 2025 |
| Nova Supreme Care Limited | Public administration | 2019 |
| Nova Three Ltd | Real estate | 2014 |
| Nova Trade Company Ltd | Wholesale & retail | 2017 |
| Nova Two Ltd | Real estate | 2014 |
| Nova.Nmt Ltd | Transport & logistics | 2024 |
| Novacroft Group Limited | Financial services | 2013 |
| Novadoc UK Limited | Information & communication | 2025 |
| Novaele Media Ltd | Information & communication | 2025 |
| Novaks Construction Limited | Construction | 2022 |
| Novara Studios Ltd | Information & communication | 2026 |
| Novasoft Information Technology (Europe) Limited | Information & communication | 2009 |
| Novastar Infotech Ltd | Information & communication | 2019 |
| Novastellar Limited | Information & communication | 2018 |