| NJ Medical Education Ltd | Professional & scientific | 2026 |
| NJ Substation Solutions Ltd | Other services | 2023 |
| NJB IT Solutions Ltd | Information & communication | 2016 |
| NJB Logistics Solutions Ltd | Administrative & support | 2026 |
| NJB Properties Limited | Real estate | 2019 |
| Njces Ltd | Professional & scientific | 2026 |
| Njjp Limited | Professional & scientific | 2015 |
| NJK Engineering Limited | Administrative & support | 2015 |
| NJK IT Solutions Ltd | Information & communication | 1997 |
| NJL Direct Limited | Wholesale & retail | 2015 |
| NJM Consulting Limited | Construction | 2017 |
| NJR Solutions Limited | Administrative & support | 2024 |
| NJX Consultancy Limited | Professional & scientific | 2026 |
| NK Landscaping Ltd | Professional & scientific | 2025 |
| Nkgs Europe Limited | Administrative & support | 2026 |
| NKM Engineering Consultancy Ltd | Professional & scientific | 2019 |
| NKM4 Ltd | Wholesale & retail | 2024 |
| NKO Painting Ltd | Construction | 2025 |
| Nkso Limited | Construction | 2015 |
| NKW Consultancy Ltd | Information & communication | 2020 |
| NL Jones Ltd | Information & communication | 2025 |
| NL Projects Ltd | Construction | 2020 |
| NLC 2016 Ltd | Professional & scientific | 2016 |
| NLC Transport Limited | Transport & logistics | 2002 |
| NLH Logistics Limited | Transport & logistics | 2014 |
| NLM Contracting Limited | Professional & scientific | 2025 |
| NM Project Services Ltd | Administrative & support | 2024 |
| NMB PMO Solutions Limited | Professional & scientific | 2018 |
| NMT Entertainment Limited | Real estate | 2018 |
| NMW Propco Ltd. | Real estate | 2018 |
| NNL Holdings Limited | Professional & scientific | 2009 |
| NNN Retail Ltd | Wholesale & retail | 2022 |
| NO Box Technologies Limited | Professional & scientific | 2016 |
| NO Brainer Agency Ltd | Professional & scientific | 2015 |
| NO Hair There Ltd | Wholesale & retail | 2026 |
| NO Human IS Limited | Administrative & support | 2025 |
| NO Limit (Norfolk) Limited | Arts & recreation | 1997 |
| NO.3 Property Limited | Real estate | 2023 |
| NO1 Widnes Carwash Ltd | Administrative & support | 2026 |
| Nobel Estates Ltd | Real estate | 2025 |
| Nodeops Ltd | Information & communication | 2025 |
| Noel Dorr Services Ltd | Construction | 2014 |
| Noggs Engineering Limited | Administrative & support | 2014 |
| Noioni Ltd | Professional & scientific | 2013 |
| Noirē Luxury Ltd | Wholesale & retail | 2025 |
| Noise Design Ltd. | Information & communication | 2009 |
| NOK Thai Cuisine Ltd | Hospitality | 2021 |
| Nokken Limited | Manufacturing | 2016 |
| Nokpave Building & Paving Limited | Construction | 2017 |
| Nomads Removals & Storage Ltd | Transport & logistics | 2026 |
| Nomato Ltd | Administrative & support | 2025 |
| Nona Gallery Limited | Wholesale & retail | 2023 |
| NOO2BOO Business Solutions Limited | Professional & scientific | 2016 |
| Noodle Management Services Ltd | Administrative & support | 2015 |
| Nooh Consultancy Ltd | Administrative & support | 2022 |
| Noonesnews Ltd | Wholesale & retail | 2025 |
| Noorsham Ltd | Administrative & support | 2023 |
| Noosa Holdings Ltd | Professional & scientific | 2015 |
| Norbreck Limited | Professional & scientific | 2004 |
| Norcross Construction Limited | Construction | 2001 |
| Nord Developments Limited | Professional & scientific | 2020 |
| Norfolk House Engineering Ltd | Professional & scientific | 2019 |
| Norfolk Husky Ltd | Manufacturing | 2020 |
| Norie Limited | Extraterritorial | 2014 |
| Norley Construction Limited | Construction | 2012 |
| Norm & Then Ltd | Professional & scientific | 2020 |
| Norman 1985 Limited | Financial services | 2015 |
| Norman Investments Ltd | Real estate | 2022 |
| Normois Limited | Administrative & support | 2025 |
| Norris Testing Limited | Other services | 2016 |
| Norscade Ltd | Professional & scientific | 2022 |
| Norseen Investments Ltd. | Financial services | 2018 |
| North Block Design Ltd | Professional & scientific | 2019 |
| North Cheshire Construction Ltd | Construction | 2026 |
| North Cheshire Electrical Limited | Construction | 2018 |
| North Cheshire Holdings Limited | Manufacturing | 1993 |
| North Cheshire Properties Ltd | Construction | 2025 |
| North KDY Limited | Administrative & support | 2024 |
| North Logistics Ltd | Transport & logistics | 2024 |
| North London Diagnostics Limited | Health & social care | 2020 |
| North Manchester Padel Tennis Club Limited | Real estate | 2024 |
| North Roots Property Ltd | Real estate | 2025 |
| North Shore Toll House Limited | Real estate | 2025 |
| North Tea Power LLP | | 2009 |
| North Third Capital Limited | Real estate | 2021 |
| North View Engineering Solutions Ltd. | Manufacturing | 2013 |
| North West & Cheshire Cleaning Services Ltd | Water & waste | 2025 |
| North West Accommodation Limited | Real estate | 2017 |
| North West Assessments Limited | Administrative & support | 2018 |
| North West Business Finance Limited | Financial services | 2009 |
| North West Business Leadership Team Limited | Administrative & support | 1990 |
| North West Climate Services Limited | Construction | 2010 |
| North West Decoiling (Trading) Limited | Manufacturing | 1991 |
| North West Echocardiography Limited | Health & social care | 2025 |
| North West Electrix Ltd. | Construction | 2021 |
| North West Environmental Services (Drainage and Groundworks) Limited | Construction | 2014 |
| North West Fire Doors Limited | Construction | 2015 |
| North West Fitted Furniture Limited | Manufacturing | 2008 |
| North West Geometrics Limited | Professional & scientific | 2024 |
| North West Homes & Property Ltd | Real estate | 2020 |