| Naccare Ltd | Health & social care | 2026 |
| Nagonic Design Ltd | Professional & scientific | 2020 |
| Nails International Limited | | 1985 |
| Nairalc Ltd | Manufacturing | 2013 |
| Naish Mews (Management Company) Limited | Households | 2005 |
| Nakari Limited | Professional & scientific | 2026 |
| Naked Deli (Bournemouth) Ltd | Hospitality | 2019 |
| Naked Deli (Cemast) Limited | Hospitality | 2024 |
| Naked Deli (City College) Ltd | Hospitality | 2018 |
| Naked Deli (Eastleigh) Ltd | Hospitality | 2024 |
| Naked Deli (EF) Ltd | Hospitality | 2020 |
| Naked Deli (Fareham) Ltd | Hospitality | 2024 |
| Naked Deli (Lansdowne) Ltd | Hospitality | 2018 |
| Naked Deli (Poole) Ltd | Manufacturing | 2017 |
| Naked Deli (Wholesale) Ltd | Wholesale & retail | 2022 |
| Nala Lounge Ltd | Hospitality | 2023 |
| Nami IT Solutions Ltd | Manufacturing | 2006 |
| NAMUS1 Limited | Real estate | 2016 |
| NAMUS2 Limited | Real estate | 2021 |
| Nandghanshyam Limited | Administrative & support | 2023 |
| Nanoetal Limited | Arts & recreation | 2011 |
| Naomi White Communications Limited | Professional & scientific | 2018 |
| Naomicoll Limited | Information & communication | 2026 |
| Napalm Holdings Limited | Financial services | 2025 |
| Napier Ventures Limited | Professional & scientific | 2025 |
| Napper & Spencer (Spraying Contractors) Limited | | 1977 |
| NAR Bournemouth Ltd | Hospitality | 2026 |
| Narrabeen Ltd | Construction | 2022 |
| Nasma BH8 Ltd | Transport & logistics | 2023 |
| Nass Capital Ltd | Real estate | 2021 |
| Nassif Dental Ltd | Health & social care | 2026 |
| Natalie FA Limited | Transport & logistics | 2022 |
| Natalie Nickowski Limited | Health & social care | 2016 |
| Natasha’S Handmade Treasure’S Ltd | Arts & recreation | 2025 |
| National Drainage Maintenance Ltd | Water & waste | 2019 |
| National Skills Trust Community Interest Company | Education | 2023 |
| Nationwide Care Group Limited | Other services | 2019 |
| Nationwide Catering Equipment Ltd | Wholesale & retail | 2021 |
| Nationwide Drains&Water Limited | Construction | 2019 |
| Nationwide Home Care Ltd | Other services | 2021 |
| Natscience International Academy of Natural Medical Sciences Ltd | Education | 2024 |
| Natty Driver Limited | Education | 2023 |
| Natural ERA Limited | Wholesale & retail | 2013 |
| Natural Flow Care and Support Ltd | Health & social care | 2025 |
| Natural Soap Boutique Ltd | Manufacturing | 2025 |
| Natural Touch Renovations Limited | Construction | 2021 |
| Natural Wood Recycling Limited | Water & waste | 2017 |
| Naturalearthessence Ltd | Wholesale & retail | 2025 |
| Naturepath CIC | Health & social care | 2024 |
| NAU Health Limited | Professional & scientific | 2022 |
| Naunton Management Ltd | Information & communication | 2013 |
| Nauticarp Ltd | Manufacturing | 2017 |
| Nautilus Marine Ltd | Professional & scientific | 2021 |
| Nautiqal (UK) Holdings Limited | Information & communication | 2026 |
| Navarac Court Freehold Ltd | Households | 2017 |
| Navarac Court Management Company Limited | Households | 1977 |
| Navi Carpentry Limited | Construction | 2024 |
| Navmart Enterprises Ltd | Construction | 2025 |
| Navs Tech Ltd | Construction | 2023 |
| Navsys Ltd | Professional & scientific | 2024 |
| NC Align Limited | Health & social care | 2011 |
| NC Touring Park Ltd | Hospitality | 2021 |
| NC Transport Solutions Ltd | Transport & logistics | 2025 |
| ND Game Productions Ltd | Information & communication | 2025 |
| ND Legal Services Limited | Professional & scientific | 2024 |
| Ndindueh Ltd | Health & social care | 2025 |
| NEA Farm Management Company Limited | Households | 1999 |
| Near the PIN Limited | Arts & recreation | 2024 |
| Nebbr Limited | Other services | 2014 |
| Neev Solutions Ltd | Real estate | 2023 |
| Neil Smith Electrical Ltd. | Construction | 2012 |
| Nelson Court Management Company Limited | Households | 1989 |
| Nelson House Properties Limited | Real estate | 1963 |
| Nelson Nutmeg Pictures Ltd | Information & communication | 2014 |
| Nelson Road Property Ltd | Real estate | 2025 |
| Nemo's Nursery Limited | Health & social care | 2010 |
| Nenee Limited | Health & social care | 2018 |
| Nenour Ltd | Other services | 2024 |
| Neon Secure Access Limited | Manufacturing | 2010 |
| Neopii Limited | Construction | 2020 |
| Nepal Spice Limited | Hospitality | 2024 |
| Nerdvanaoperations Ltd | Wholesale & retail | 2025 |
| Nericom Limited | Real estate | 2017 |
| Nerm Education & Consultancy Ltd | Education | 2020 |
| Nerm Ltd | Wholesale & retail | 2018 |
| Nerva Murphy Ltd | Real estate | 2018 |
| Nerys Lindsay Ltd | Extraterritorial | 2025 |
| Nesm Property Investment Ltd | Real estate | 2018 |
| Nest AI Systems Limited | Information & communication | 2024 |
| Nest Care Group Ltd | Construction | 2019 |
| Netal Limited | Wholesale & retail | 2016 |
| Netconsulting Solutions Ltd | Information & communication | 2025 |
| Netherhall Gardens (Bournemouth) Residents Association Limited | Households | 1967 |
| Nettleship Sawyer Limited | Real estate | 2002 |
| Network Executive Limited | Administrative & support | 2011 |
| Network Global Holdings Limited | Transport & logistics | 2007 |
| Network Global Management Services Limited | Administrative & support | 2010 |
| Neue* a Creative Company Ltd | Professional & scientific | 2018 |
| Neuronote Solutions Ltd | Wholesale & retail | 2025 |
| Neuroscript Limited | Information & communication | 2016 |