| Neptune Co Living Ltd | Real estate | 2018 |
| Nerkai Ltd | Health & social care | 2022 |
| Nessyjems Limited | Administrative & support | 2010 |
| Nest Land & Developments (Beech) Limited | Real estate | 2026 |
| Nest Land & Developments (Lenham) Limited | Real estate | 2023 |
| Nest Land & Developments (Sandhurst) Limited | Real estate | 2024 |
| Nest Land & Developments Limited | Real estate | 2021 |
| Nestworks Limited | Households | 2019 |
| Nesu Care Solutions Ltd | Administrative & support | 2016 |
| NET Zero Capital Partners Limited | Professional & scientific | 2021 |
| Netbox Holdings Limited | Financial services | 2021 |
| Nethergong Events Ltd | Other services | 2019 |
| Nethergong Glamping Ltd | Hospitality | 2018 |
| Nethergong Limited | Hospitality | 2013 |
| Netspira Limited | Information & communication | 2025 |
| Network Media Ltd | Professional & scientific | 2015 |
| Network Planning Solutions Ltd. | Information & communication | 2013 |
| Neuralnova Analytics Limited | Information & communication | 2025 |
| Neuro Insight Training and Consultancy Ltd | Education | 2026 |
| Neurosight Ltd | Professional & scientific | 2019 |
| Neville House (Management) Ltd | Real estate | 2024 |
| New Canterbury Eatery Ltd | Hospitality | 2026 |
| New Creek Properties (Kent) Limited | Real estate | 2023 |
| New Haine Road Management Limited | Real estate | 2026 |
| New Little Ones Properties Ltd | Real estate | 2021 |
| New Start Agency Limited | Professional & scientific | 2016 |
| New Stone Designs Ltd | Manufacturing | 2018 |
| Newclean Services Limited | Real estate | 2005 |
| Newco CT4 Limited | Financial services | 2024 |
| Newhall Projects (Four) Limited | Administrative & support | 2004 |
| Newhall Projects (Three) Limited | Administrative & support | 2004 |
| Newhall Projects (Two) Limited | Administrative & support | 2002 |
| Newhall Projects Limited | Other services | 1995 |
| Newhall Residents Association Limited | Households | 2009 |
| Newman Brown Consultancy Ltd | Hospitality | 2015 |
| Newman Road 1964 Limited | Extraterritorial | 2014 |
| Newmaquinn Commercial Limited | Construction | 2016 |
| Newsx Community Interest Company | Information & communication | 2022 |
| Nexa Business Strategies Ltd | Information & communication | 2023 |
| Nexa Property Group Ltd | Real estate | 2025 |
| Nexaforge Labs Limited | Information & communication | 2025 |
| Nexgen CNC Ltd | Manufacturing | 2022 |
| Nexhaus Konstruct Ltd | Construction | 2026 |
| Nexsys Pharma Limited | Professional & scientific | 2025 |
| Next Chapter Fundraising Ltd | Professional & scientific | 2026 |
| Next Generation Investment Management Limited | Financial services | 2022 |
| Nextgen Cons Limited | Information & communication | 2025 |
| Nextvector Ltd | Professional & scientific | 2025 |
| Nexvoltis Ltd | Water & waste | 2026 |
| NG Topco Limited | Administrative & support | 2024 |
| NH BIO Limited | Professional & scientific | 2024 |
| NH Parts Ltd | Wholesale & retail | 2019 |
| Niamso Ventures Ltd | Real estate | 2026 |
| Nice to BE Nice Ltd | Other services | 2014 |
| Nicholas Rooke Limited | Real estate | 2018 |
| Nicholas Todd Ltd | Information & communication | 2010 |
| Nigerian UK Support Network CIC | Other services | 2026 |
| Nily Medical Ltd | Wholesale & retail | 2020 |
| Nipin Bagla Ltd | Health & social care | 2023 |
| Nizami Trader Ltd | Wholesale & retail | 2025 |
| NN Dynasty Fantastic Ltd | Construction | 2025 |
| NN Innovations Ltd | Information & communication | 2023 |
| NO One Here IS ME Productions Ltd | Arts & recreation | 2025 |
| NO.1 Nails & Beauty Ltd | Other services | 2015 |
| NO.35 Ltd | Hospitality | 2020 |
| Noah and Martha Limited | Agriculture & fishing | 2022 |
| Noble Haulage Ltd | Transport & logistics | 2025 |
| Nobouquet Ltd | Wholesale & retail | 2017 |
| Nocoded Ltd | Information & communication | 2024 |
| Noforeignland Ltd | Information & communication | 2021 |
| Nomad Partners Limited | Professional & scientific | 2023 |
| Nomad Pizza Limited | Hospitality | 2022 |
| Nonington Farms Limited | Agriculture & fishing | 1979 |
| Noor Taxi Service Ltd | Transport & logistics | 2022 |
| North Downs Medical Services Limited | Health & social care | 2013 |
| North Four Digital Limited | Professional & scientific | 2026 |
| North Road (Kingsdown) Conservation Limited | Households | 1998 |
| North Shore Capital Limited | Real estate | 2025 |
| NORTH89 Ltd | Other services | 2025 |
| Northgate Convenience Limited | Wholesale & retail | 2019 |
| Northgate Mini Market Canterbury Ltd | Wholesale & retail | 2025 |
| Northgate Sofia Ltd | Wholesale & retail | 2021 |
| Northgate Takeaway Limited | Hospitality | 2023 |
| Norton Cherries Limited | Agriculture & fishing | 1998 |
| NOT Another Marketing Agency Ltd | Professional & scientific | 2021 |
| Notorious BRG Ltd | Hospitality | 2019 |
| Nouman Afridi Ltd | Wholesale & retail | 2026 |
| Nova (Kent) Limited | Real estate | 2013 |
| Nova Central Commerce Ltd | Wholesale & retail | 2025 |
| Novatriz Limited | Professional & scientific | 2025 |
| NPS Investments Kent Limited | Wholesale & retail | 2018 |
| Nrbm Services Limited | Extraterritorial | 2021 |
| NRH Professional Services Ltd | Professional & scientific | 2010 |
| Nrswa Cost Accounting Ltd | Professional & scientific | 2022 |
| NT Timberframes Ltd | Construction | 2019 |
| NTG Recruitment Ltd | Administrative & support | 2026 |
| Ntks UK Ltd | Real estate | 2018 |
| Number 12 Consulting Ltd | Professional & scientific | 2025 |
| Number Nine Communications Limited | Professional & scientific | 2017 |
| Nwholbrook Properties Ltd | Real estate | 2026 |