| NAF Properties Limited | Real estate | 2023 |
| Nafisa Bristol Ltd | Hospitality | 2026 |
| Nagco National Group Ltd | Wholesale & retail | 2025 |
| Nahana Ltd | Wholesale & retail | 2022 |
| Nahl Properties Ltd | Real estate | 2025 |
| Nahul PDM Ltd | Manufacturing | 2025 |
| Naia Blends Ltd | Wholesale & retail | 2026 |
| Naia Ventures Ltd | Professional & scientific | 2023 |
| Naik Dental Services Limited | Health & social care | 2014 |
| Nail Envy Ltd | Other services | 2019 |
| Nail ET’ Bradleystoke Ltd | Other services | 2025 |
| Nail Perfection 284 Ltd | Other services | 2025 |
| Nails 1 Ltd | Other services | 2019 |
| Nails 2 Tails South West Ltd | Professional & scientific | 2023 |
| Nails Galore N Spa Ltd | Other services | 2025 |
| Nailsea ASH Ltd | Real estate | 2023 |
| Nailsea Builders Merchants Limited | Wholesale & retail | 1980 |
| Nailsea Chiropractic Clinic Ltd | Health & social care | 2025 |
| Nailsea Cleaning Services Limited | Administrative & support | 2007 |
| Nailsea Community Group CIC | Other services | 2020 |
| Nailsea Construction Limited | Construction | 2006 |
| Nailsea Electrical Limited | Wholesale & retail | 1994 |
| Nailsea Financial Services Ltd | Financial services | 1999 |
| Nailsea Fish Bar Limited | Hospitality | 2006 |
| Nailsea Footcare Limited | Health & social care | 2012 |
| Nailsea Masonic Hall Company Limited | Other services | 1964 |
| Nailsea Patio Supplies Limited | Wholesale & retail | 2003 |
| Nailsea Physio Ltd | Health & social care | 2011 |
| Nailsea Power Cleaning Limited | Wholesale & retail | 1980 |
| Nailsea Shire Investments Ltd | Real estate | 2023 |
| Nailxpression Limited | Other services | 2008 |
| Naite Limited | Real estate | 2022 |
| Najeeb Catering Ltd | Hospitality | 2016 |
| Najuma Services Limited | Health & social care | 2018 |
| Nakagawa Masashichi Shoten UK Ltd | Wholesale & retail | 2025 |
| Naked APE Brands Ltd | Professional & scientific | 2022 |
| Naked Beast Productions Ltd | Information & communication | 2018 |
| Naked Guides Limited | Information & communication | 2004 |
| Naked Nutz Ltd | Extraterritorial | 2022 |
| Naked OWL Media Ltd | Information & communication | 2026 |
| Nakoga Ltd | Information & communication | 2012 |
| Nakoura Properties Ltd | Real estate | 2026 |
| Naland Limited | Arts & recreation | 1994 |
| Nale Mini-Market Ltd | Wholesale & retail | 2025 |
| Naleni Lighting Ltd | Information & communication | 2022 |
| Naluvelil Engineering Works Limited | Construction | 2025 |
| Namak Bristol Limited | Hospitality | 2021 |
| Namaste Convenience Store Ltd | Wholesale & retail | 2026 |
| Namaste Namaste Ltd | Wholesale & retail | 2021 |
| NAMASTE29 Ltd | Wholesale & retail | 2023 |
| Namb Services Limited | Transport & logistics | 2026 |
| Name the Day Ltd. | Other services | 2023 |
| Nameera & Co (Nailsea) Ltd | Hospitality | 2023 |
| Nameless Media Group Ltd | Information & communication | 1999 |
| Namis Beauty Ltd | Other services | 2025 |
| Namu Care Solutions Ltd | Health & social care | 2018 |
| Namwen Consultancy Limited | Professional & scientific | 2018 |
| NAN Jing Ltd | Hospitality | 2021 |
| Nanani Limited | Professional & scientific | 2022 |
| Nancy Chambers Limited | Administrative & support | 2008 |
| Nancy Properties Limited | Real estate | 2025 |
| Nania’S Ltd. | Manufacturing | 2015 |
| NANNY'S24HRS Limited | Education | 2013 |
| Nanoscope Services Ltd | Professional & scientific | 2006 |
| Nanostring Technologies Europe Limited | Manufacturing | 2010 |
| Naomi Property Developments Ltd | Real estate | 2024 |
| Naomi Salisbury Consulting Ltd | Professional & scientific | 2025 |
| Naomi Williams Limited | Professional & scientific | 2016 |
| Naos (Bristol) CIC | Health & social care | 2015 |
| Naos Solar Limited | Energy | 2023 |
| Napano Ltd | Wholesale & retail | 2015 |
| Napier House (Management) Limited | Households | 1963 |
| Napolita Gourmet Ltd | Hospitality | 2018 |
| Nappymap Limited | Information & communication | 2026 |
| Naranix Limited | Wholesale & retail | 2025 |
| Naravo Limited | Financial services | 2024 |
| Narcis Courier Ltd | Transport & logistics | 2025 |
| Narco Limited | Information & communication | 1997 |
| Naren Enterprises Ltd | Wholesale & retail | 2026 |
| Narostar Limited | Information & communication | 2013 |
| Narrow Quay Consulting Limited | Professional & scientific | 2020 |
| Narrow Quay Trustees Limited | Professional & scientific | 2000 |
| Narrowdrive Ltd | Professional & scientific | 2023 |
| Narrowways Land Limited | Construction | 2021 |
| Narshru Ltd | Real estate | 2025 |
| Narthaki Dance Academy Limited | Wholesale & retail | 2025 |
| Naru Landscaping Limited | Administrative & support | 2025 |
| Narwhal Group Limited | Financial services | 2021 |
| NAS Engineering Services Limited | Professional & scientific | 2025 |
| Nasa Accountants Limited | Administrative & support | 2006 |
| Nasa Consulting Limited | Administrative & support | 2025 |
| Nasa Group Ltd | Administrative & support | 2022 |
| Nasa Umbrella Ltd | Administrative & support | 2009 |
| Nascent Properties Limited | Real estate | 2023 |
| Nascott Wood & Co Limited | Administrative & support | 2000 |
| Naseli Inc Ltd | Real estate | 2021 |
| Nash Accounting Ltd | Professional & scientific | 2025 |
| Nash Family LLP | | 2025 |
| Nash Packs Limited | Manufacturing | 2026 |
| Nasir Group Logistics Ltd | Transport & logistics | 2025 |