| N. D. Transport Solutions Limited | Transport & logistics | 2009 |
| N.H Professional Services Limited | Information & communication | 2015 |
| N.P.Hardy & Co. LP | | 2017 |
| Nadash Homes Ltd | Real estate | 2020 |
| Nadash IT Solutions Ltd | Information & communication | 2015 |
| Naked Elephant Ltd | Information & communication | 2007 |
| Namaste Nepalese Cuisine Ltd | Hospitality | 2021 |
| Namaste Nepalese Restaurant Ltd | Hospitality | 2022 |
| Nantoni Consulting Ltd | Professional & scientific | 2020 |
| Naos Floors Limited | Construction | 2005 |
| Napier Close (W.14) Management Limited | Real estate | 1976 |
| Narco Warriors Media Ltd | Professional & scientific | 2026 |
| Narl Enterprises Ltd | Real estate | 2025 |
| Nash Developments Limited | Construction | 2026 |
| Nasu Food Limited | Hospitality | 2025 |
| National Property Group Ltd | Real estate | 2025 |
| National Taekwon DO Alliance UK Ltd | Arts & recreation | 2018 |
| Nationwide Movers and Waste Management Limited | Water & waste | 2025 |
| Native-Hue Limited | Professional & scientific | 2014 |
| Nats Enterprises Limited | Wholesale & retail | 2025 |
| Natura Imports Limited | Professional & scientific | 2018 |
| Natural Health Centre Tonbridge Ltd | Health & social care | 2024 |
| NBH Draughting Limited | Professional & scientific | 2023 |
| Ndege Global Limited | Transport & logistics | 2008 |
| NEA Design Consultancy Limited | Professional & scientific | 2023 |
| Nedac Limited | Real estate | 2013 |
| Needsmet Technologies Ltd | Information & communication | 2024 |
| Negotiationglobal Ltd | Professional & scientific | 2020 |
| Negotium Partners Limited | Professional & scientific | 2009 |
| Nemadi Advisors Limited | Financial services | 1999 |
| Nemadi General Partners Limited | Financial services | 2013 |
| Nemadi LP | | 2013 |
| Neon Ocean Ltd | Information & communication | 2019 |
| Neonsign Insistence Limited | Manufacturing | 2025 |
| Neovista Limited | Extraterritorial | 2008 |
| Neovista LLP | | 2009 |
| Nero Gents Ltd | Other services | 2022 |
| NET Trade-Price Limited | Extraterritorial | 2003 |
| Nettlestead Oast Residents Management Company Limited | Households | 2007 |
| Network Interventions Limited | Professional & scientific | 2010 |
| Neuro-Harmony Limited | Education | 2019 |
| Neuroaffirm Education Ltd | Education | 2025 |
| Neurocapabilities Ltd | Professional & scientific | 2021 |
| Neurosurgery and Spine Associates Ltd | Health & social care | 2010 |
| Never NOT Broken Limited | Professional & scientific | 2019 |
| New Coburg Limited | Manufacturing | 2012 |
| New Court (Tonbridge) Limited | Households | 1962 |
| New Court Freehold Limited | Households | 2002 |
| New Deal Finance UK Ltd | Financial services | 2010 |
| New ERA Energy Solutions Limited | Construction | 2021 |
| New Gumpus Medical Limited | Health & social care | 2020 |
| New Lodge Farm Limited | Agriculture & fishing | 1996 |
| New Paradigm Advisory Limited | Public administration | 2023 |
| New Paradigm Images Limited | Arts & recreation | 2008 |
| Newbery Plumbing and Heating Ltd | Construction | 2026 |
| Newid Computer Consultant Limited | Information & communication | 1997 |
| Newpaddockwoodsushi Ltd | Wholesale & retail | 2022 |
| Newton Waterproofing Systems (Holdings) Limited | Financial services | 2018 |
| Newton Waterproofing Systems Limited | Transport & logistics | 2007 |
| Nexreel Media Limited | Information & communication | 2025 |
| Next Horizon Holdings Limited | Professional & scientific | 2001 |
| Nextgen Healthcare Limited | Health & social care | 2012 |
| Nextgen Hospitality & Realty Limited | Wholesale & retail | 2024 |
| NHB Medical Ltd | Health & social care | 2019 |
| NHT Consultancy Limited | Professional & scientific | 2015 |
| NIC Mackenzie Property Management Ltd | Real estate | 2021 |
| Nicola DI Vitale Ltd | Health & social care | 2013 |
| Nicola Green Limited | Arts & recreation | 2011 |
| Nicriel Ltd | Administrative & support | 2013 |
| Nigel Bristow Carpentry Limited | Construction | 2019 |
| Nikkie Mort PA & Admin Limited | Administrative & support | 2019 |
| Nine Squared Ltd | Real estate | 2025 |
| Ninethirty Limited | Professional & scientific | 2018 |
| Ninety Two Marina Management Limited | Households | 2002 |
| Nipp Limited | Administrative & support | 2011 |
| Nirilas Limited | Real estate | 2025 |
| Nirvana Beauty Tonbridge Limited | Other services | 2023 |
| Nisis Limited | Transport & logistics | 2005 |
| Nixus Consulting Limited | Professional & scientific | 2013 |
| NJW Holdings Limited | Administrative & support | 2020 |
| NJW Plant Hire Ltd | Administrative & support | 2026 |
| Nkkz Ltd | Professional & scientific | 2020 |
| NKS Automotive Limited | Wholesale & retail | 2025 |
| NLF Accountancy Limited | Professional & scientific | 2019 |
| NLF Accounting Limited | Professional & scientific | 2019 |
| NO Limits Music Limited | Information & communication | 2019 |
| NO.33 Events Ltd | Hospitality | 2020 |
| NO.451 Norwood Road Limited | Real estate | 1937 |
| NO.451 Norwood Road(Management)Limited | Real estate | 1967 |
| Noble Partnerships Ltd | Professional & scientific | 2020 |
| Nocchio Ltd | Wholesale & retail | 2023 |
| Nolton Building Limited | | 1963 |
| Nonlinear Capital Management Ltd | Administrative & support | 2009 |
| Nonlinear Ltd | Administrative & support | 2009 |
| Nonlinear Technology Limited | Extraterritorial | 2011 |
| Nordhus Furniture Limited | Manufacturing | 2020 |
| Normans Landing Management Company Limited | Households | 2018 |
| Norris Carpentry and Construction Limited | Construction | 2014 |
| Norse Property Limited | Construction | 2021 |
| Northdale Advisors Limited | Professional & scientific | 2017 |