| Neighbourhub Green Ltd | Extraterritorial | 2020 |
| Neighbourhub Limited | Extraterritorial | 2020 |
| Nelly's Little Elephants Limited | Administrative & support | 2017 |
| NEM Consultancy Ltd | Professional & scientific | 2023 |
| NEO Bright Global Ltd | Administrative & support | 2025 |
| Nero Building Services Ltd | Construction | 2019 |
| Netasec Limited | Information & communication | 2019 |
| New Century Living Limited | Real estate | 2022 |
| New Community Real Estate Limited | Extraterritorial | 2020 |
| New Electrical Wholesale Ltd. | Wholesale & retail | 2000 |
| New Safeguard Ltd | Construction | 2026 |
| New Terrain Properties Ltd | Real estate | 2021 |
| New Trend Builders Ltd | Construction | 2024 |
| Newlight Homes Limited | Real estate | 2020 |
| Nexara Ltd | Wholesale & retail | 2025 |
| Nexcellon Ltd | Information & communication | 2024 |
| Next Generation School of Motoring Limited | Education | 2006 |
| Nexus Property Ltd | Real estate | 2026 |
| Nexus Rewards Limited | Wholesale & retail | 2018 |
| Nexus Social Care Consultants Limited | Health & social care | 2026 |
| Nguyen Property Investments Ltd | Real estate | 2022 |
| Nicholas James Property Investments Ltd | Real estate | 2022 |
| Nicholas John Interiors Limited | Wholesale & retail | 2013 |
| Nick Stafford Ltd | Arts & recreation | 2010 |
| Nika Consultancy Ltd | Health & social care | 2024 |
| Nikola Howard Ltd | Information & communication | 2017 |
| Nikpharm Ltd | Wholesale & retail | 2022 |
| Nil's Dreams Ltd | Wholesale & retail | 2024 |
| Nilk-P Ltd | Transport & logistics | 2020 |
| NINETY9 Solutions Ltd | Information & communication | 2019 |
| Ninjitsu Arbitrage Ltd | Wholesale & retail | 2026 |
| Ninnha Limited | Wholesale & retail | 2023 |
| Nippon Production Ltd | Information & communication | 2023 |
| Nirasu Properties Ltd | Real estate | 2017 |
| Nirasu Property Investment Ltd | Real estate | 2018 |
| Nirvaan Ltd | Real estate | 2025 |
| Nirvana Urns Limited | Wholesale & retail | 2023 |
| Nitara Technologies Ltd | Professional & scientific | 2023 |
| NJS Property Development Limited | Real estate | 2024 |
| Nnorth Limited | Information & communication | 2019 |
| NO Limits Digital Media Ltd | Information & communication | 2022 |
| NO Looking Back Ltd | Wholesale & retail | 2025 |
| Noble Care (UK) Limited | Health & social care | 2013 |
| Noble Dwellings Limited | Real estate | 2024 |
| Node One Developments Limited | Real estate | 2025 |
| Noffmann and Company Ltd | Professional & scientific | 2026 |
| Nola Creative Ltd | Information & communication | 2013 |
| Nonpareil Property Limited | Real estate | 2008 |
| Norris&Kumar Limited | Health & social care | 2017 |
| Norte Grande Limited | Hospitality | 2017 |
| North 2 South Enterprises Ltd | Construction | 2019 |
| Northern Lights Consulting Limited | Professional & scientific | 2023 |
| Nothing Next Ltd | Information & communication | 2024 |
| Novalure Ltd | Wholesale & retail | 2025 |
| Novusatus Ltd | Information & communication | 2009 |
| Npdrivingschool Ltd | Education | 2022 |
| Ntish Limited | Health & social care | 2026 |
| Number 17 Ltd | Real estate | 2016 |
| Numeric Crunch Accountancy Ltd | Professional & scientific | 2019 |
| Nurture Elegance Ltd | Wholesale & retail | 2022 |
| Nuruzzaman Limited | Health & social care | 2012 |
| Nuruzzaman Properties Ltd | Real estate | 2022 |
| Nvas 17 Ltd | Real estate | 2021 |
| Nvys Developments Ltd | Real estate | 2018 |
| Nwoke Solutions Limited | Information & communication | 2018 |
| NYA & Co. Properties Ltd | Real estate | 2025 |
| NYA & Co. Properties( Gemini) Ltd | Real estate | 2025 |
| O'Mayers & Associates Limited | Professional & scientific | 2015 |
| O'Mayers Services Ltd | Real estate | 2020 |
| O.A.T Solution Limited | Construction | 2018 |
| Oak and Stone Design and Build Ltd | Professional & scientific | 2024 |
| Oaklands Carpet Consultants Ltd | Construction | 2022 |
| Oaklands Living Ltd | Health & social care | 2024 |
| Oakley Traders Limited | Construction | 2015 |
| OB Legends Ltd | Real estate | 2023 |
| Obasusi Enterprises Ltd | Professional & scientific | 2015 |
| Oblisk Ltd | Information & communication | 2021 |
| Obraizo Ltd | Wholesale & retail | 2025 |
| Occm Properties Limited | Real estate | 2019 |
| OD Property North Ltd | Real estate | 2026 |
| ODD MAN OUT Ltd | Information & communication | 2006 |
| Odessa Security Ltd | Administrative & support | 2016 |
| ODO Homes Limited | Real estate | 2025 |
| Oduree Consulting Limited | Other services | 2022 |
| Oelofse Investment Company Ltd | Real estate | 2019 |
| Ohams Ltd | Professional & scientific | 2014 |
| Ohemaah Globall Ltd | Real estate | 2026 |
| Okes Marketing Consultancy Ltd | Transport & logistics | 2024 |
| OLA Zaccheus Consulting Limited | Administrative & support | 2025 |
| Oladee I.T Solution Limited | Information & communication | 2020 |
| Olive Tree March Limited | Hospitality | 2026 |
| Olmarket Limited | Information & communication | 2019 |
| Olufash Engineering & Construction Ltd | Construction | 2018 |
| Olufash Properties Ltd | Construction | 2021 |
| Oluwafemi Olanrewaju Limited | Financial services | 2016 |
| Oluwatosin Koleola Ltd | Information & communication | 2020 |
| Ome.House Limited | Extraterritorial | 2020 |
| Omnied Limited | Wholesale & retail | 2010 |
| Omorose Boutique Ltd | Wholesale & retail | 2022 |
| ON the Hunt Ltd | Information & communication | 2018 |