| Nista Ltd | Real estate | 2024 |
| Nitrate Ventures Solutions Ltd | Manufacturing | 2022 |
| NJB Kitchens & Bathrooms Limited | Wholesale & retail | 2025 |
| NJC Financial Services Ltd | Professional & scientific | 2016 |
| NJK Residential Ltd | Real estate | 2024 |
| NJS Capital Ltd | Financial services | 2025 |
| NK Decor Limited | Other services | 2022 |
| NKR Freehold 10 Limited | Households | 2019 |
| NM Carpentry & Building Limited | Construction | 2014 |
| NMP Properties Limited | Real estate | 2009 |
| NMP Property Management Limited | Households | 2024 |
| NMR Associates Ltd | Professional & scientific | 2019 |
| NO Holdings Ltd | Real estate | 2020 |
| NO Messing Consultancy Ltd | Administrative & support | 2023 |
| NO Nonsense Leadership Ltd | Education | 2024 |
| NO Secrets Ltd | Wholesale & retail | 2016 |
| Nodety Limited | Information & communication | 2024 |
| Noise Experts Ltd | Professional & scientific | 2024 |
| Nokki Consulting Ltd | Professional & scientific | 2019 |
| Nomad Foods Bondco PLC | Administrative & support | 2014 |
| Nomad Foods Europe Finance Limited | Administrative & support | 2009 |
| Nomad Foods Europe Finco Limited | Professional & scientific | 2006 |
| Nomad Foods Europe Holdco Limited | Professional & scientific | 2006 |
| Nomad Foods Europe Holdings Limited | Administrative & support | 2006 |
| Nomad Foods Europe Ipco Limited | Professional & scientific | 2006 |
| Nomad Foods Europe Limited | Manufacturing | 2006 |
| Nomad Foods Europe Midco Limited | Professional & scientific | 2006 |
| Nomad Foods International Limited | Professional & scientific | 1938 |
| Noodle Bar Woking Ltd | Hospitality | 2024 |
| Noor Capital Partners Ltd | Professional & scientific | 2020 |
| Noor Eyecare Limited | Wholesale & retail | 2010 |
| Norfolk Gardens (Barrack Path) Management Company Limited | Administrative & support | 1977 |
| Norsworthys Health & Beauty Ltd | Other services | 2026 |
| North Camp Pharmacy Ltd | Wholesale & retail | 2005 |
| North East Property Ventures Limited | Financial services | 2019 |
| North Hill Nurseries Limited | Agriculture & fishing | 2019 |
| North Surrey Imaging Limited | Health & social care | 2015 |
| Northbranch Limited | Administrative & support | 2017 |
| Northdown Holdings Limited | Real estate | 1978 |
| Northern Alliance Ltd | Professional & scientific | 1997 |
| Northern Brix Ltd | Real estate | 2021 |
| Northhill and Sons Ltd | Construction | 2025 |
| Northridge Consulting Ltd | Information & communication | 2014 |
| Northwood Associates (Farnham) Limited | Other services | 2024 |
| Northwood Chiropractic Ltd | Health & social care | 2024 |
| Norton Enterprises Limited | Professional & scientific | 2023 |
| Nosecode Productions Limited | Information & communication | 2009 |
| Nostromos AI Ltd | Information & communication | 2025 |
| NOT Standard Wears Ltd | Wholesale & retail | 2025 |
| Noter Limited | Information & communication | 2025 |
| Notgames Ltd. | Information & communication | 2019 |
| Nova Dental Weybridge Limited | Health & social care | 2026 |
| Nova Quantum Ltd | Professional & scientific | 2022 |
| Novamediq Health Strategies Ltd | Professional & scientific | 2025 |
| Novo Consulting Technologies Ltd | Information & communication | 2015 |
| Novu Salons Ltd | Other services | 2021 |
| NOW NOW Events Ltd | Arts & recreation | 2023 |
| Noxbox Ltd | Manufacturing | 2015 |
| NPH Plumbing, Heating and Air Conditioning Ltd | Construction | 2012 |
| NPI Consulting Limited | Administrative & support | 2010 |
| NQ Medical Services Ltd | Health & social care | 2019 |
| NRR Consultants Ltd | Professional & scientific | 2018 |
| NSB Woking Ltd | Hospitality | 2025 |
| Nsdn Private Limited | Real estate | 2023 |
| Nsha Ltd | Wholesale & retail | 2022 |
| NSJ Growth Ltd | Professional & scientific | 2025 |
| Nspec Construction Limited | Construction | 2024 |
| Nspr Limited | Professional & scientific | 2000 |
| Nsra Limited | Arts & recreation | 1999 |
| Ntuthuko MD Ltd | Health & social care | 2024 |
| NU Vision Media Ltd | Information & communication | 2014 |
| Nu-Vision Consulting Limited | Professional & scientific | 2019 |
| Nu-Vision Group Limited | Financial services | 2019 |
| Nu-Vision Property Rentals Ltd | Real estate | 2018 |
| Nu-Vision Property Ventures Ltd | Real estate | 2017 |
| Nuclear Kitty Ltd | Information & communication | 2024 |
| Nudge Labs Studio Ltd | Information & communication | 2026 |
| Nudja Ltd | Administrative & support | 2010 |
| NUH Consulting Ltd | Information & communication | 2021 |
| NUH Properties Ltd | Real estate | 2026 |
| Numeriq IC Flow Ltd | Professional & scientific | 2023 |
| Numero 1 Limited | Other services | 2004 |
| Nura Nutrition Ltd | Wholesale & retail | 2025 |
| Nurizon International Ltd | Professional & scientific | 2015 |
| Nuroko Limited | Information & communication | 2011 |
| Nurtured Munchkin Ltd | Health & social care | 2021 |
| Nutcott 2 Limited | Professional & scientific | 2024 |
| Nuthurst Properties Limited | Real estate | 2003 |
| Nutri-Stop Limited | Manufacturing | 2022 |
| Nutriibox Catering Limited | Hospitality | 2018 |
| Nutrivized Ltd | Wholesale & retail | 2019 |
| Nuvia Networks Limited | Administrative & support | 2015 |
| Nuvias Group Limited | Administrative & support | 2015 |
| Nuviascents Ltd | Wholesale & retail | 2026 |
| Nuvision Abroad Limited | Administrative & support | 2014 |
| Nuvox Digital Ltd | Information & communication | 2026 |
| NW Creative Studios Ltd | Information & communication | 2025 |
| NW Homes Limited | Construction | 2013 |
| NW Homes Management Limited | Real estate | 2017 |
| Nyaa Services Ltd | Administrative & support | 2023 |