| New China China Restaurant Ltd | Hospitality | 2022 |
| New Connects Ltd | Construction | 2019 |
| New Continent Limited | Administrative & support | 2016 |
| New Dawn Training Academy Limited | Education | 2016 |
| New GEN Residences Ltd | Real estate | 2024 |
| New Granada Playhouse C.I.C. | Hospitality | 2018 |
| New Homes South East Limited | Construction | 2016 |
| New Idea Properties Ltd | Real estate | 2022 |
| New LEO Products Ltd | Wholesale & retail | 2015 |
| New Life Care Limited | Health & social care | 2008 |
| New Peach Blossom Ltd | Hospitality | 2023 |
| New Scaffolding Ltd | Construction | 2021 |
| New Stoneleigh Epsom Ltd | Information & communication | 2016 |
| New Thinking Ltd | Professional & scientific | 2006 |
| New Town House RTM Company Limited | Households | 2020 |
| New Vision Cleaners Ltd | Administrative & support | 2018 |
| New Vision Roofing Services Ltd | Construction | 2014 |
| Newhaven Connect Ltd | Wholesale & retail | 2018 |
| Newlake Architecture Ltd | Professional & scientific | 2024 |
| NEWLIFE8 Ltd | Professional & scientific | 2026 |
| Newtech Solutions Inc. Limited | Information & communication | 2012 |
| Nexlink Media Ltd | Information & communication | 2024 |
| Next Generation Electrics Ltd | Construction | 2025 |
| Next Wave Consulting SS Limited | Administrative & support | 2025 |
| Nextechsoft Ltd | Real estate | 2019 |
| Nextex INT Ltd | Wholesale & retail | 2015 |
| Nextex Ltd | Wholesale & retail | 2004 |
| Nextgenasap Ltd | Information & communication | 2025 |
| Nextgenpc Ltd | Wholesale & retail | 2025 |
| Nextwave Consultancy Group Ltd | Information & communication | 2025 |
| Nexus Capital Management Ltd | Administrative & support | 2013 |
| Nexus Electrical Engineering Limited | Construction | 2021 |
| Nexus Group Limited | Construction | 2020 |
| Nexus Integrated Solutions Limited | Wholesale & retail | 2024 |
| Nexus Investments Management Limited | Real estate | 2024 |
| Nexus Mechanical Ltd | Construction | 2018 |
| Nexus Mechanical Maintenance Ltd | Construction | 2019 |
| Nexus Original Limited | Wholesale & retail | 2010 |
| Nexus Overseas Ltd | Information & communication | 2024 |
| Nexus Paper Packs Ltd | Manufacturing | 2025 |
| Nexus Property Trading Limited | Real estate | 2024 |
| Nexus Renewable Solutions Ltd | Construction | 2024 |
| Nexus Talent Search Ltd | Administrative & support | 2025 |
| Nexus Union Ltd | Administrative & support | 2017 |
| Nezamis Systems Limited | Information & communication | 2026 |
| Nezimo Ltd | Wholesale & retail | 2015 |
| NG Contrasts Ltd | Construction | 2023 |
| NGB Surrey Ltd | Other services | 2011 |
| NGS Electrical Ltd | Construction | 2025 |
| NH108 Limited | Hospitality | 2026 |
| Nhadat Limited | Real estate | 2025 |
| NHY Ltd | Wholesale & retail | 2026 |
| Niazi Star Services Limited | Administrative & support | 2025 |
| Nica Homes Limited | Transport & logistics | 2019 |
| Nice Buns Sandwiches Limited | Wholesale & retail | 2012 |
| Niceday Limited | Wholesale & retail | 2024 |
| Nicholas Greg Limited | Real estate | 1981 |
| Nicholas Hill Ltd | Information & communication | 2012 |
| Nichols & Sons Ltd | Agriculture & fishing | 2014 |
| Nichols Tree Surgeons Ltd | Administrative & support | 2015 |
| Nick Rochford Ltd | Professional & scientific | 2024 |
| Nicolein Ltd | Administrative & support | 2021 |
| Nicvian Care Services Limited | Health & social care | 2026 |
| Nifest UK Ltd | Hospitality | 2024 |
| Nigel Brandon Consulting Limited | Professional & scientific | 2009 |
| Nigel Reilly Consultancy Ltd | Professional & scientific | 2024 |
| Nightingale Court (Sutton) Limited | Households | 2002 |
| Nightingale Electrical Services Ltd | Construction | 2023 |
| Nightingale House Residents Association (Trematon Place) Teddington Limited | Real estate | 1991 |
| NIKEA777 Ltd | Transport & logistics | 2022 |
| Nimco Estates Limited | Real estate | 2025 |
| Nina J Limited | Health & social care | 2016 |
| Nine Bedford ROW Advocates Limited | Professional & scientific | 2013 |
| Ninety SIX Earlsfield Road Limited | Households | 1990 |
| Ningrat Indonesia Holdings Ltd | Wholesale & retail | 2025 |
| Nirmaan Consulting Ltd | Professional & scientific | 2017 |
| Nirmaan Homes Ltd | Real estate | 2020 |
| Nirvaanauk Ltd | Extraterritorial | 2023 |
| Nishant PVT Ltd | Information & communication | 2010 |
| Nithyaconsultancy Ltd | Information & communication | 2017 |
| NIV Consulting Limited | Professional & scientific | 2014 |
| Nivtrade Limited | Wholesale & retail | 2022 |
| Niza Construction Ltd | Real estate | 2015 |
| Niza Enterprises Ltd | Wholesale & retail | 2003 |
| Niza Forecourt Ltd | Wholesale & retail | 2015 |
| Niza Realty Limited | Real estate | 2022 |
| Niza Retail Ltd | Wholesale & retail | 2019 |
| Niza Southwater Ltd | Wholesale & retail | 2018 |
| Niza Superstores (Eastbourne) Limited | Wholesale & retail | 2010 |
| NJH Property Ltd | Real estate | 2018 |
| NK 63 Limited | Professional & scientific | 2013 |
| NKG Consultancy Limited | Information & communication | 2019 |
| NKH Services Ltd. | Health & social care | 2014 |
| NL Design & Build Ltd | Construction | 2012 |
| NMB Associates Ltd | Information & communication | 2018 |
| Nmed Clinic Ltd | Health & social care | 2022 |
| Nmlr Consultancy Services Ltd | Information & communication | 2025 |
| NO Fear Incorporated Ltd | Extraterritorial | 2023 |
| NO. 241 Norwood Ltd | Hospitality | 2021 |
| NO. 7 Barber Shop Ltd | Other services | 2012 |