| Nazco Hospitality Limited | Hospitality | 2021 |
| NBC Bearings Limited | Extraterritorial | 1993 |
| NBC Group Limited | Wholesale & retail | 1978 |
| NBC Limited | Extraterritorial | 1997 |
| NC United FC CIC | Arts & recreation | 2022 |
| NCF Construction Midlands Ltd | Construction | 2015 |
| NCL (Precision Engineering) Limited | Administrative & support | 2011 |
| NCN Research & Intelligence Limited | Professional & scientific | 2025 |
| NDM Business Hub Limited | Information & communication | 2016 |
| NDM Telford Limited | Financial services | 2016 |
| Ndukx Healthcare and Consultancy Ltd | Health & social care | 2024 |
| Nebo Contracting Ltd | Other services | 2024 |
| Nebula Games Ltd | Information & communication | 2019 |
| Nebus Limited | Professional & scientific | 2005 |
| Ned-N Limited | Transport & logistics | 2015 |
| Nedel 75 Ltd. | Construction | 2015 |
| Nedel Trans Ltd | Transport & logistics | 2022 |
| Nedell 75 Heating Solutions Ltd | Construction | 2020 |
| Neelam Valley Cafes Ltd | Hospitality | 2018 |
| Neet Feet Podiatry Ltd | Health & social care | 2020 |
| Neil Lewis Engineering Limited | Manufacturing | 1987 |
| Neill Project Management Limited | Professional & scientific | 2016 |
| Neko Sushi Ltd | Hospitality | 2024 |
| Nelutzu Transport Ltd | Transport & logistics | 2015 |
| Nemagor Ltd | Other services | 2019 |
| Nemphi Homes Ltd | Health & social care | 2021 |
| Nemphi Investments Ltd | Real estate | 2022 |
| NEN Healthcare Solutions Ltd | Public administration | 2020 |
| Nenist Ltd | Other services | 2020 |
| Neon Hospitality Limited | Hospitality | 2018 |
| Neon Supplies Ltd | Wholesale & retail | 2020 |
| Neonsignsuk Ltd | Professional & scientific | 2022 |
| Nerdmania Ltd | Wholesale & retail | 2021 |
| Nerwik Ltd | Other services | 2019 |
| Nested Loop Studios Ltd | Information & communication | 2026 |
| Nestly Baby Ltd | Information & communication | 2026 |
| Nesyif Business Development Services Ltd | Wholesale & retail | 2025 |
| Netberry Investments Limited | Wholesale & retail | 2025 |
| Netking Ltd | Construction | 2026 |
| Netplus Ltd | Information & communication | 2023 |
| Netstal UK Ltd | Manufacturing | 2021 |
| Neuro Routes Ltd | Health & social care | 2026 |
| New Brick Lane Ltd | Real estate | 2025 |
| New Build Brickwork Contractors Ltd | Construction | 2017 |
| New City Contract Cleaning Limited | Construction | 2000 |
| New Dawn Fitness Limited | Arts & recreation | 2008 |
| New Dawn Hospitality Ltd | Hospitality | 2024 |
| New Exploit Limited | Health & social care | 2022 |
| New Inns MOT &Service Centre Ltd | Wholesale & retail | 2019 |
| New Mini Market ( Telford) Ltd | Wholesale & retail | 2021 |
| New Pave Limited | Construction | 2025 |
| New Start Property Solutions Ltd | Construction | 2020 |
| New Street Car Centre Limited | Wholesale & retail | 2017 |
| New Virsa Limited | Wholesale & retail | 2019 |
| Newfield Garage Ltd | Wholesale & retail | 2017 |
| Newport Farmer Ltd | Wholesale & retail | 2020 |
| Newport Pet Crematorium Limited | Other services | 2019 |
| Newport QA Ltd | Wholesale & retail | 2023 |
| Newport S a Limited | Wholesale & retail | 2016 |
| Newport Single PLY Ltd | Construction | 2016 |
| Newtown Bearing Company Limited | Extraterritorial | 1998 |
| Nexgen Neural Ltd | Information & communication | 2023 |
| Nextdance Limited | Hospitality | 1995 |
| Nexus Eventainment Ltd | Administrative & support | 2026 |
| Nexus Industrial Supplies Limited | Wholesale & retail | 2021 |
| Nezara Limited | Administrative & support | 2022 |
| NFG Access Limited | Construction | 2020 |
| Nfocus Ltd | Information & communication | 2000 |
| NG and RS Pallets Ltd | Wholesale & retail | 2026 |
| NGR Solutions Ltd | Construction | 2026 |
| Niangkadior Limited | Construction | 2024 |
| Nick Cargo Ltd | Transport & logistics | 2026 |
| Nick Tart Bridgnorth Ltd | Real estate | 2020 |
| Nick Tart Lettings Limited | Real estate | 2014 |
| Nick Tart Newport Ltd | Real estate | 2021 |
| Nicks Saddle Services Ltd | Manufacturing | 2024 |
| Nicoles Group Ltd | Information & communication | 2019 |
| Nidh Ltd | Real estate | 2025 |
| Nightingale Engineering Consultants Ltd | Professional & scientific | 2022 |
| Nightingales Property Group Ltd | Real estate | 2025 |
| Nihal Transport Ltd | Transport & logistics | 2025 |
| Nihyeir Ltd | Professional & scientific | 2025 |
| Nikdem Ltd | Transport & logistics | 2023 |
| Nikolas Transport Limited | Transport & logistics | 2017 |
| Nilbooks Ltd | Other services | 2018 |
| Nilvik Holdings Ltd | Financial services | 2026 |
| Nirvairjewellery Ltd | Wholesale & retail | 2026 |
| Niutang Ingredients Limited | Wholesale & retail | 2020 |
| Niutang UK Limited | Wholesale & retail | 2008 |
| Nizurtiks Ltd | Wholesale & retail | 2019 |
| NJ Investments Ltd | Administrative & support | 2025 |
| NJP Solicitors Ltd | Professional & scientific | 2013 |
| NK Rental Properties Ltd | Real estate | 2021 |
| NKY Finance Ltd | Professional & scientific | 2021 |
| NL Consultancy & Training Limited | Professional & scientific | 2025 |
| Nlog Investments Ltd | Transport & logistics | 2014 |
| Nlsk Group Ltd | Manufacturing | 2023 |
| NM Life Trustees Limited | Professional & scientific | 1984 |
| NM Pensions Limited | Financial services | 2001 |
| NM Serenity Ltd | Health & social care | 2024 |