| Naobel Property LLP | | 2015 |
| Naomi Beauty Ltd | Other services | 2026 |
| Napier Meridian Limited | Professional & scientific | 2005 |
| Narang and Agrawal Medical Services Limited | Health & social care | 2022 |
| Narrow Planet Limited | Wholesale & retail | 2015 |
| Nashka Designs Ltd | Wholesale & retail | 2025 |
| National Association of Memorial Masons | Other services | 1987 |
| National Electrical Solutions Limited | Construction | 2015 |
| National Waste Solutions Ltd | Water & waste | 2024 |
| Nationwide E-Bikes LLP | | 2008 |
| Natura Conexus Limited | Administrative & support | 2025 |
| Natura-Si Ltd | Professional & scientific | 2018 |
| Natural Animal Centre Ltd | Education | 2022 |
| Naturaledge Landscaping Ltd | Administrative & support | 2025 |
| Naturebank Holdings Ltd | Real estate | 2025 |
| Natures Edge Properties Limited | Real estate | 2026 |
| Naturesave Policies Limited | Financial services | 1993 |
| Navtor UK Limited | Professional & scientific | 2017 |
| Nawaz Retail Limited | Wholesale & retail | 2024 |
| Naxena Limited | Other services | 1973 |
| NB Construction SW Limited | Construction | 2021 |
| NBS Injury Clinic Ltd | Health & social care | 2024 |
| NC Geological Services Intl Ltd | Professional & scientific | 2025 |
| NC Groundworks Limited | Construction | 2005 |
| NCA Vehicle Management Limited | Financial services | 2003 |
| NCR Properties SW Limited | Real estate | 2024 |
| ND Cycles Limited | Wholesale & retail | 2017 |
| NED Wind Developments Limited | Energy | 2015 |
| Needa Ltd | Information & communication | 2023 |
| Needles & Pins Aerospace Limited | Manufacturing | 2018 |
| Neil Marcus Construction Limited | Construction | 2019 |
| Neil Marcus Homes Ltd. | Construction | 1998 |
| Neil Marcus Investments Limited | Real estate | 2004 |
| Neil Robertson Plumbing and Heating Limited | Construction | 2008 |
| Neil White Photography Ltd | Professional & scientific | 2014 |
| Nempnett Farm Limited | Agriculture & fishing | 2017 |
| Nephil Care Services Ltd | Administrative & support | 2023 |
| Neptune Clothing Limited | Wholesale & retail | 2018 |
| Neroche Estates Limited | Real estate | 1997 |
| Neroche Properties Ltd | Professional & scientific | 2014 |
| Nesco Consulting Limited | Real estate | 2009 |
| Neswick Properties Limited | Real estate | 2015 |
| Netify Ltd | Information & communication | 2023 |
| Netknow Limited | Information & communication | 1998 |
| Netsherman Limited | Professional & scientific | 2018 |
| Nettlecombe Craft School CIC | Education | 2023 |
| Nettlecombe Projects Ltd | Manufacturing | 2017 |
| Neubau Limited | Extraterritorial | 2002 |
| Neurocore Limited | Information & communication | 2022 |
| Neurodiversity in the Workplace Limited | Education | 2025 |
| New Barns Walton Ltd | Real estate | 2025 |
| New Continental Company Group Limited | Financial services | 2026 |
| New Continental Global Consortium Ltd | Financial services | 2026 |
| New Farm (Bowdens) Limited | Agriculture & fishing | 1953 |
| New Horizon Financial Planning Ltd | Financial services | 2025 |
| New Look Barber Ltd | Other services | 2017 |
| New Path Counselling Ltd | Health & social care | 2026 |
| Newbery Corner Management Company Ltd | Households | 2011 |
| Newbigging Capital Limited | Professional & scientific | 2022 |
| Newbury House Residents Association Limited | Households | 1989 |
| Newcombe Caravan Park Limited | Hospitality | 2011 |
| Newham Court (Cheddar) Limited | Real estate | 2005 |
| Newhaven Coppice Ltd | Agriculture & fishing | 2021 |
| Newley Farm Ltd | Agriculture & fishing | 2023 |
| Newport Manor Farms Limited | Agriculture & fishing | 2012 |
| Newton Clarke Holdings Limited | Financial services | 2020 |
| Newton Clarke Properties Limited | Real estate | 2022 |
| Next Stage (Somerset) Limited | Information & communication | 2023 |
| Next Step Independence Limited | Health & social care | 2015 |
| Next Stop Iceland Ltd | Administrative & support | 2017 |
| Nexus Commercial Ltd | Financial services | 2016 |
| Nexus Property Services Ltd | Real estate | 2018 |
| NFI Aviation Ltd | Manufacturing | 2022 |
| Ngrw Ltd | Professional & scientific | 2026 |
| NGS Limited | Real estate | 2002 |
| NH Creative Design Ltd | Professional & scientific | 2024 |
| Nhekwe Ltd | Professional & scientific | 2023 |
| Nichares Hairdressing Limited | Other services | 2015 |
| Nick Health & Care Ltd | Health & social care | 2021 |
| Nick Medforth Building Contractor Limited | Construction | 2005 |
| Nick Trott Limited | Transport & logistics | 2017 |
| Nickels Electrical Limited | Construction | 2019 |
| Nicola Newman Mrcvs Ltd | Professional & scientific | 2017 |
| Nicola Nicholls Limited | Manufacturing | 2005 |
| Nicolasz Laundry Ltd | Administrative & support | 2023 |
| Nielsen Carpenters Limited | Construction | 2021 |
| Nieto & Veen Properties Ltd | Real estate | 2026 |
| NIF Inspections Limited | Professional & scientific | 2026 |
| Nightingale Properties (Weston-Super-Mare) Limited | Real estate | 1998 |
| Nightingales Holdings South West Ltd | Construction | 2018 |
| Nihaf Limited | Other services | 2023 |
| NIK DOT Codes Ltd | Information & communication | 2024 |
| Niko Drive & Build Ltd | Construction | 2016 |
| Nine Consultancy UK Ltd | Public administration | 2023 |
| Nine Lives Bristol Ltd | Professional & scientific | 2023 |
| Ninja Network Limited | Health & social care | 2025 |
| NJF Retail Limited | Wholesale & retail | 2024 |
| NJW Electrical Services Limited | Construction | 2021 |
| NK Holdings Taunton Ltd | Financial services | 2025 |
| NKS MED Ltd | Education | 2019 |