| New Forest Plastics Limited | Construction | 2015 |
| New Forest Plumbing 24/7 Limited | Construction | 2018 |
| New Forest Prime Ltd | Wholesale & retail | 2022 |
| New Forest Projects Ltd | Construction | 2025 |
| New Forest Property Services Limited | Construction | 2018 |
| New Forest Services Ltd | Wholesale & retail | 2022 |
| New Forest Sewing Studio Ltd | Wholesale & retail | 2021 |
| New Forest Slings CIC | Administrative & support | 2020 |
| New Forest Spice Limited | Hospitality | 2008 |
| New Forest Swim LLP | | 2021 |
| New Forest Wellbeing CIC | Health & social care | 2025 |
| New Frontiers Life Church Southampton | Other services | 2007 |
| New Generation Martial Arts Limited | Arts & recreation | 2018 |
| New Life Training Ltd | Arts & recreation | 2010 |
| New Line Telecoms Limited | Wholesale & retail | 2019 |
| New Look Laser Treatment Limited | Health & social care | 2013 |
| New Look Roofing Limited | Construction | 2023 |
| New Loops Limited | Information & communication | 2013 |
| New Lucky House Limited | Hospitality | 1999 |
| New Milton News and Media Ltd | Extraterritorial | 2020 |
| New Oriental Hants Limited | Hospitality | 2012 |
| New Pantomime Productions (UK) Limited | Arts & recreation | 2003 |
| New Pantomime Productions Limited | Arts & recreation | 1989 |
| New Place Hotel Company Limited | Hospitality | 2017 |
| New Place Property Company Limited | Real estate | 2019 |
| New Property 1 Limited | Real estate | 2024 |
| New Property 2 Limited | Real estate | 2024 |
| New Radio Telecoms Ltd | Information & communication | 2012 |
| New River Estates & Investments Limited | Real estate | 2021 |
| New Rywal Ltd | Wholesale & retail | 2010 |
| New Shoots Training Limited | Administrative & support | 2017 |
| New Solter Ltd | Construction | 2020 |
| New Style Driveways & Landscaping Ltd | Administrative & support | 2025 |
| New WOK This Way Ltd | Hospitality | 2024 |
| Newabs Ltd | Health & social care | 2018 |
| Newbarn Compton Limited | Real estate | 2016 |
| Newbery & Co Homes LLP | | 2026 |
| Newbold Contracting Limited | Professional & scientific | 1998 |
| Newcaruk Ltd | Wholesale & retail | 2013 |
| Newco Living Limited | Real estate | 2019 |
| Newens PUB Co Ltd | Hospitality | 2023 |
| Newfields Gardening CIC | Health & social care | 2015 |
| Newgate Business Consulting Ltd | Professional & scientific | 2019 |
| Newgen Peptides Ltd | Wholesale & retail | 2026 |
| Newhall Agency Company Limited | Transport & logistics | 1958 |
| Newhampton Assets Ltd | Real estate | 2021 |
| Newlands Property Ltd | Other services | 2017 |
| Newlayout Design Limited | Professional & scientific | 2016 |
| Newlook Protective Coatings Limited | Construction | 2025 |
| Newlyn Estates Limited | Real estate | 2011 |
| Newman Assets Ltd | Real estate | 2022 |
| Newman Catholic Academy Trust | Education | 2011 |
| Newman ENG. Co. Ltd | Professional & scientific | 2025 |
| Newman Investment Properties Limited | Real estate | 1999 |
| Newmans (Southampton) Limited | Wholesale & retail | 2004 |
| Newmoss Roofing Ltd | Construction | 2025 |
| Newpal (UK) Ltd | Wholesale & retail | 2010 |
| Newt Communications Ltd | Information & communication | 2019 |
| Newtown Court (Bishops Waltham) Management Limited | Hospitality | 2007 |
| Newtown Road (Warsash) Management Limited | Households | 2023 |
| Newtown Scents Limited | Manufacturing | 2022 |
| Nexabeta Limited | Information & communication | 2025 |
| Nexamove Logistics Ltd | Transport & logistics | 2025 |
| Nexart Studios Ltd | Information & communication | 2024 |
| Nexcentra Consulting Ltd | Professional & scientific | 2025 |
| Nexgen Connect Solutions Ltd | Financial services | 2024 |
| Nexgen Estate Management Ltd | Administrative & support | 2023 |
| Nexjen Tech Solutions Ltd | Wholesale & retail | 2025 |
| Nexmind Automation Ltd | Information & communication | 2025 |
| Nexora Transport Ltd | Transport & logistics | 2025 |
| Next Communications and Security Limited | Wholesale & retail | 1988 |
| Next GEN Coatings Group Ltd | Construction | 2026 |
| Next Generation Drylining Limited | Construction | 2016 |
| Next Level Scaffolding Ltd | Construction | 2019 |
| Next Move Lettings Limited | Real estate | 2023 |
| Next Oasis Group Ltd | Hospitality | 2023 |
| Next Security Limited | Extraterritorial | 1993 |
| Next Step Solutions Ltd | Information & communication | 2006 |
| Next Technology Ltd | Information & communication | 2011 |
| Nextctl Ltd | Information & communication | 2025 |
| Nexterlaw Limited | Education | 2021 |
| Nextgen Services Ltd | Administrative & support | 2024 |
| Nextgen Vehicle Locksmith Limited | Wholesale & retail | 2025 |
| Nextjen Tax Ltd | Education | 2022 |
| Nextrend Trading Limited | Administrative & support | 2024 |
| Nexus Business Consulting Limited | Real estate | 2020 |
| Nexus Oceantech Ltd | Professional & scientific | 2026 |
| Nexus Stays Group Ltd | Hospitality | 2026 |
| Nexus Student Support Ltd | Education | 2026 |
| Nexus Weaver Ltd | Information & communication | 2026 |
| Nexxorra Ltd | Wholesale & retail | 2026 |
| Nexxu Group (UK) Limited | Professional & scientific | 2023 |
| Nexzus Limited | Professional & scientific | 2024 |
| Neyo ARE Concepts Ltd | Health & social care | 2024 |
| Neyo's Turkish Barbers Ltd | Other services | 2022 |
| Neyozee Limited | Health & social care | 2022 |
| Nfcc Trading Limited | Wholesale & retail | 2016 |
| Nfcj Services Limited | Real estate | 2026 |
| Nfilmz Productions Ltd | Information & communication | 2026 |
| NFJ Enterprises Ltd | Wholesale & retail | 2012 |