| Nebula Blast Ltd | Wholesale & retail | 2025 |
| Nebula Engineering Ltd | Professional & scientific | 2021 |
| Nebulytics Capital Limited | Information & communication | 2018 |
| Nectar Subs Limited | Hospitality | 2023 |
| Nectar Trust | Health & social care | 2012 |
| Nectarine Gardens Property Ltd | Real estate | 2015 |
| Nedakam Associates Limited | Professional & scientific | 2010 |
| Nedya Beauty Limited | Wholesale & retail | 2021 |
| Ned’S Parlour & Beauty Ltd | Other services | 2015 |
| Need Affairs Ltd | Wholesale & retail | 2024 |
| NEED4LEADS Ltd | Administrative & support | 2014 |
| Neelam Laser Treatment Ltd | Other services | 2012 |
| Neelkanth Beauty Limited | Other services | 2024 |
| NEEMO1 Ltd | Real estate | 2020 |
| Neeraj Ltd | Construction | 2025 |
| Nees London Ltd | Wholesale & retail | 2015 |
| Nees Property Limited | Households | 2025 |
| Neet Construction Ltd | Construction | 2024 |
| Neeva Enterprise Ltd | Wholesale & retail | 2025 |
| Neez International Ltd | Wholesale & retail | 2021 |
| Nehemiah Film Alliance LLP | | 2010 |
| Neil Creations Limited | Wholesale & retail | 2017 |
| Neish Property Services Limited | Real estate | 2025 |
| Neke BAU Ltd | Manufacturing | 2019 |
| NEL Acces Ltd | Wholesale & retail | 2023 |
| Nella Express Perfection Cleaning and Ironing Services Limited | Other services | 2023 |
| Nelmes Property Limited | Real estate | 2021 |
| Nelson College London Limited | Education | 2004 |
| Nelson Developments London Ltd | Real estate | 2024 |
| Nelson Educare Ltd | Education | 2024 |
| Nelson London Ventures Limited | Administrative & support | 2013 |
| Nelson Property Plumstead Limited | Real estate | 2025 |
| Nelstar Properties Limited | Households | 1994 |
| Nemrut MVP Limited | Administrative & support | 2019 |
| Nems F N Welding Ltd | Manufacturing | 2019 |
| Nems Operations Ltd | Professional & scientific | 2025 |
| Neon Estates Ltd | Real estate | 2020 |
| Neonhosting Ltd | Wholesale & retail | 2025 |
| Neophyte Technologies Limited | Information & communication | 2017 |
| Nepal Momo Ltd | Hospitality | 2023 |
| Nephron Education Ltd | Education | 2026 |
| Neptr Solutions Limited | Information & communication | 2014 |
| Neptune Accounting Services (UK) Limited | Professional & scientific | 2012 |
| Neptune Import and Export Limited | Wholesale & retail | 2008 |
| Neptune Overseas Ltd | Wholesale & retail | 2022 |
| Nera Group Ltd | Hospitality | 2025 |
| Nerijog Limited | Manufacturing | 2016 |
| Nero Crystal Ltd | Wholesale & retail | 2025 |
| Nero Homes London Ltd | Professional & scientific | 2025 |
| Neroli Trading Ltd | Wholesale & retail | 2023 |
| Nesa Builders Limited | Construction | 2019 |
| Nesh Investments Limited | Wholesale & retail | 2019 |
| Nessakulsumacleans Limited | Administrative & support | 2025 |
| Nest & Nectar Ltd | Wholesale & retail | 2026 |
| Nest and Stock Ltd | Wholesale & retail | 2026 |
| Nest Properties London Ltd | Real estate | 2014 |
| Nest Properties UK Ltd | Real estate | 2016 |
| Nestcarer Property Limited | Real estate | 2021 |
| Nestmart Ltd | Wholesale & retail | 2026 |
| Nesture Group Limited | Information & communication | 2025 |
| NET Zero Consult Ltd | Wholesale & retail | 2023 |
| NET-CLOUD21 Ltd | Information & communication | 2019 |
| Nethraa Trading & Marketing Services Ltd | Wholesale & retail | 2011 |
| Netlink Systems Limited | Wholesale & retail | 2025 |
| Netrux Services Limited | Wholesale & retail | 2025 |
| Netsap Limited | Information & communication | 2012 |
| Network Help | Other services | 2019 |
| Network Security Systems Ltd | Administrative & support | 2016 |
| Netzero Eco Limited | Construction | 2022 |
| NEU Management Ltd | Arts & recreation | 2010 |
| Neu-Vision London Ltd | Wholesale & retail | 2009 |
| Neuro INK CIC | Education | 2024 |
| Neuro Plumbing & Heating Ltd | Construction | 2021 |
| Neuroartistry Ltd | Information & communication | 2025 |
| Neurodiversity Support Solutions Ltd | Health & social care | 2021 |
| Neuroparent Academy Ltd | Education | 2026 |
| Neurosens Ltd | Information & communication | 2023 |
| Neutex International Limited | Wholesale & retail | 2000 |
| Neutral EYE Consultancy Services Ltd | Professional & scientific | 2011 |
| Neuvalux Ltd | Wholesale & retail | 2018 |
| Neuvatech Ltd | Information & communication | 2025 |
| Nevara Training London Ltd | Information & communication | 2025 |
| Never Give UP Ltd | Construction | 2025 |
| Never TOO Old Limited | Health & social care | 2024 |
| New A1 Barber Limited | Other services | 2025 |
| New AGE Law Limited | Professional & scientific | 2024 |
| New BK Limited | Wholesale & retail | 2024 |
| New Build Concept Ltd | Construction | 2018 |
| New Carework Services Ltd | Health & social care | 2026 |
| New Chandra Stores Limited | Wholesale & retail | 2019 |
| New Chillies Aberfeldy Limited | Hospitality | 2015 |
| New Concept Interiors Limited | Administrative & support | 2007 |
| New Concept Property Ltd | Real estate | 2017 |
| New Concept Windows Ltd | Construction | 2008 |
| New Crispy’S Chicken Ltd | Hospitality | 2024 |
| New Cross Alliance PCN Limited | Health & social care | 2021 |
| New Dragon Inn South Ealing Limited | Hospitality | 2022 |
| New Emporium Ltd | Wholesale & retail | 2014 |
| New Executives Ltd | Hospitality | 2024 |
| New Favourite Chicken Limited | Hospitality | 2018 |