| New Support Care Limited | Health & social care | 2021 |
| New Tadi Market Limited | Wholesale & retail | 2020 |
| New Takeaway Limited | Hospitality | 2018 |
| Newbank Developments Limited | Real estate | 2003 |
| Newcourt Homes Ltd | Construction | 2019 |
| Newground Properties Limited | Real estate | 2011 |
| Newman Dental Care Limited | Health & social care | 2011 |
| Newnoble Limited | Real estate | 1966 |
| Newton Meadows Management Company Ltd | Households | 2023 |
| Newton Wealth Management Ltd | Real estate | 2021 |
| Nexus 1 Residents Management Limited | Households | 2016 |
| Nexusbio Limited | Administrative & support | 2023 |
| NFS (Nominees) Limited | Financial services | 2011 |
| NFS Academy Limited | Arts & recreation | 2015 |
| NG Property Holdings Limited | Real estate | 2024 |
| Ng&Aj Ltd | Hospitality | 2024 |
| Ngaged Ltd | Education | 2023 |
| NHR Engineering Limited | Professional & scientific | 2009 |
| NI Cutler Heating & Plumbing Limited | Construction | 2003 |
| Niche Marine Marketing Limited | Professional & scientific | 2006 |
| Nicholas Court (Salisbury) Management Co Ltd | Households | 2023 |
| Nicholas Willetts Painting Contractors Ltd | Construction | 2019 |
| Nicholls Quality Consultant Ltd | Professional & scientific | 2022 |
| Nick Evans Spinal Surgery Limited | Health & social care | 2020 |
| Nick Pogmore Consultancy Limited | Administrative & support | 2018 |
| Nick Pownall Ltd | Extraterritorial | 2015 |
| Nickbest Delivery Services Ltd | Transport & logistics | 2022 |
| Nicscott Properties Limited | Real estate | 2025 |
| Nifty Minx Limited | Financial services | 2014 |
| Nigel G Turton (Thatching) Limited | Construction | 2010 |
| Nigel Jenner & Co Limited | Professional & scientific | 2023 |
| Nigel KAY Limited | Administrative & support | 2005 |
| Night OWL Properties Ltd | Professional & scientific | 2017 |
| Nightingale Court Carterton Management Limited | Households | 2008 |
| Nikki RAE Ltd | Arts & recreation | 2025 |
| Nilkanth Retail Limited | Wholesale & retail | 2025 |
| Niltiac Engineering Limited | Construction | 2012 |
| Nimash Legal Services Limited | Professional & scientific | 2015 |
| Nimble Minds Reasoning Ltd | Education | 2019 |
| Nina Notman Ltd | Professional & scientific | 2015 |
| Nina Tillett Limited | Administrative & support | 2004 |
| Ningwood Business Park Limited | Construction | 2024 |
| Nirban Limited | Health & social care | 2025 |
| Nivalis Trees Ltd | Agriculture & fishing | 2020 |
| Nixsa Ltd | Wholesale & retail | 2021 |
| Njam Consultancy Ltd | Information & communication | 2022 |
| NJC Tiling Limited | Construction | 2001 |
| NL Accounting Ltd | Professional & scientific | 2017 |
| NL Flooring & Refurb Ltd | Construction | 2026 |
| NL Flooring Refurb Ltd | Construction | 2026 |
| NMH Phillips Consulting Ltd | Administrative & support | 2023 |
| Nnush Ltd | Wholesale & retail | 2021 |
| Noble Education Ltd | Education | 2026 |
| Noble Metalworks Limited | Professional & scientific | 2001 |
| Noble SP Limited | Hospitality | 2024 |
| Noisette (Dorking) Limited | | 2012 |
| Noisivarec Limited | Professional & scientific | 1996 |
| Nolan’S Scaffolding Ltd | Construction | 2024 |
| Nomad Holdings & Investments Ltd | Financial services | 2025 |
| Nomadic Change Limited | Real estate | 2008 |
| Nomansland Garage Ltd | Wholesale & retail | 2012 |
| Nombuso Consultancy Limited | Health & social care | 2010 |
| Nonington Trustee Company Limited | Professional & scientific | 2019 |
| Norbert Woodworks Ltd | Manufacturing | 2024 |
| Nord West Marine (UK) Limited | Administrative & support | 2006 |
| Norfolk Street Management Company Ltd | Real estate | 2013 |
| Norman Court Shoot Club | Agriculture & fishing | 2020 |
| Norrington Manor Farms (Holdings) Limited | Professional & scientific | 1951 |
| Norrington Manor Farms Limited | Agriculture & fishing | 1951 |
| Norrington Trustees Limited | Professional & scientific | 2019 |
| Norscot Consulting Ltd | Professional & scientific | 2017 |
| North Hill Farms Limited | Agriculture & fishing | 1962 |
| North Kent Farms Limited | Agriculture & fishing | 1981 |
| North Point Consultancy Ltd | Information & communication | 2018 |
| North Point Technology Limited | Professional & scientific | 2020 |
| North South Partners LLP | | 2019 |
| North Street 1965 Limited | Extraterritorial | 2014 |
| North Way Dental Practice Limited | Health & social care | 2009 |
| Northern J & D Limited | Hospitality | 2018 |
| Northern Quarter Bars Ltd | Hospitality | 2017 |
| Northgate Heights (Hendon) Residents Association Limited | Households | 2001 |
| Northover Construction and Plant Ltd | Construction | 2021 |
| Northstowe Estate Management Company Limited | Households | 2026 |
| Northumberland Mansions Limited | Households | 2008 |
| Northwall Group Ltd | Manufacturing | 2026 |
| Northwood Southampton Limited | Real estate | 1998 |
| Norton Enterprise Management Limited | Households | 2001 |
| NOT Just Backs Limited | Health & social care | 2011 |
| NOT Made Limited | Information & communication | 2019 |
| Notebook Pictures Ltd | Information & communication | 2025 |
| Nourishing Way Limited | Health & social care | 2013 |
| Nova Procurement Ltd | Wholesale & retail | 2025 |
| Novara One Ltd | Wholesale & retail | 2026 |
| Novasecta Limited | Professional & scientific | 2003 |
| Novecore Licensing Ltd. | Manufacturing | 2018 |
| Nowphysio Ltd | Health & social care | 2009 |
| NQ2 Hospitality Limited | Hospitality | 2017 |
| NQ2 Ltd | Professional & scientific | 2016 |
| NR & RC Parker Ltd | Administrative & support | 2013 |
| NST (UK) Limited | Real estate | 2004 |