| Mywater Solutions Limited | Manufacturing | 2025 |
| Myza Consultancy Ltd | Professional & scientific | 2022 |
| Myzone Group Limited | Arts & recreation | 2015 |
| MZ Force Ltd | Wholesale & retail | 2018 |
| MZ Woodhouse Ltd | Hospitality | 2025 |
| MZA Estates Ltd | Real estate | 2023 |
| MZA Services Ltd | Information & communication | 2020 |
| Mzalas Limited | Hospitality | 2026 |
| Mzeiton Limited | Health & social care | 2022 |
| MZJ Holdings Ltd | Administrative & support | 2016 |
| MZJ Investments Limited | Real estate | 2024 |
| MZM Solutions Ltd | Manufacturing | 2012 |
| Mztoyz Ltd | Wholesale & retail | 2023 |
| N & a Rental Limited | Real estate | 2025 |
| N & Co Consulting Limited | Administrative & support | 2025 |
| N & D Medical Limited | Health & social care | 2026 |
| N & H Commercials Limited | Professional & scientific | 2010 |
| N & J Halal Meat Ltd | Wholesale & retail | 2017 |
| N & P Homes Ltd | Real estate | 2023 |
| N a Lane Limited | Health & social care | 2010 |
| N a Shaffique Limited | Administrative & support | 2020 |
| N C Worksurfaces Ltd | Construction | 2021 |
| N Clark Events Ltd | Construction | 2024 |
| N D Marr Investments Limited | Wholesale & retail | 2012 |
| N Dodd Consulting Limited | Information & communication | 2025 |
| N Dodson Window Cleaning Services Ltd | Administrative & support | 2014 |
| N F Global Logistics Limited | Transport & logistics | 2014 |
| N G Acting Limited | Arts & recreation | 2025 |
| N G Bailey Pensions Trustees Limited | Extraterritorial | 2010 |
| N H Flames Ltd | Hospitality | 2024 |
| N J Robb Limited | Arts & recreation | 2013 |
| N Jones Properties Limited | Real estate | 2016 |
| N M S Systems Limited | Information & communication | 1996 |
| N Mubarak Ltd | Health & social care | 2026 |
| N P Building Services (Yorkshire) Ltd | Construction | 2016 |
| N Squared Dentistry Limited | Health & social care | 2015 |
| N Turner Ltd | Wholesale & retail | 2013 |
| N Ubhi Consulting Limited | Other services | 2024 |
| N V L Limited | Professional & scientific | 2012 |
| N Ward & SON Limited | Wholesale & retail | 2005 |
| N Y B Consulting Ltd | Information & communication | 2022 |
| N&B Developments (Leeds) Ltd | Construction | 2025 |
| N&Co Commercial Limited | Real estate | 2025 |
| N&Co Commercial Real Estate Limited | Real estate | 2021 |
| N&Co Residential (Osgodby) Limited | Real estate | 2025 |
| N&Co Residential Limited | Real estate | 2025 |
| N&E Property Developments Ltd | Construction | 2024 |
| N&H Traders Ltd | Wholesale & retail | 2025 |
| N&J FM Ltd | Construction | 2024 |
| N&N Health Innovations Ltd | Information & communication | 2026 |
| N'Alytics Limited | Information & communication | 2014 |
| N,Z Z Property Ltd | Real estate | 2020 |
| N-Technology Ltd | Information & communication | 2015 |
| N. M. Nelly's Care Limited | Health & social care | 2014 |
| N. Stoker Equestrian Ltd | Arts & recreation | 2014 |
| N.B. Realisations Limited | Manufacturing | 1932 |
| N.C. Chipili Limited | Health & social care | 2013 |
| N.G.I.K Limited | Professional & scientific | 2003 |
| N.M. Kotia Limited | Administrative & support | 1959 |
| N.O.D Locksmiths Ltd | Administrative & support | 2023 |
| N.O.L Property Management Limited | Real estate | 2018 |
| N.P.E. (Landscaping) Limited | Administrative & support | 1979 |
| N.S. Speed Settlement Company | Financial services | 1972 |
| N.Stoker Agricultural Ltd | Agriculture & fishing | 2017 |
| N/D SAR Holdings Ltd | Financial services | 2025 |
| N100 Limited | Information & communication | 2018 |
| N2 Medical Ltd | Health & social care | 2017 |
| N21 Plumbing and Heating Ltd | Construction | 2015 |
| N3XT Generation Developments 1 Ltd | Construction | 2025 |
| N4CD Ltd | Manufacturing | 2023 |
| N8 JS Ltd | Professional & scientific | 2024 |
| N9 Developments Ltd | Real estate | 2021 |
| NA (Leeds) Ltd | Construction | 2016 |
| NA Qureshi Ltd | Health & social care | 2022 |
| Naach Leeds Ltd | Arts & recreation | 2025 |
| NAB View Properties Ltd | Real estate | 2022 |
| Nabarro Mcallister & Co Limited | Professional & scientific | 2003 |
| Nabarro Mcallister (Leeds) Limited Liability Partnership | | 2016 |
| Nabco (Scotland) Limited | Administrative & support | 2001 |
| Nabeel Anwar Ltd | Wholesale & retail | 2025 |
| Nabhanya Investments Limited | Real estate | 2025 |
| Nabila Finance Ltd | Professional & scientific | 2018 |
| Nabit Ltd | Real estate | 2025 |
| NAC Corporation Limited | Professional & scientific | 2000 |
| NAC Group Holdings Limited | Professional & scientific | 2022 |
| Nachle CIC | Education | 2024 |
| Nachris Limited | Wholesale & retail | 2026 |
| Nacorm Ltd | Professional & scientific | 2025 |
| NAD Plus Limited | Health & social care | 2025 |
| Nada Al-Sham Ltd | Health & social care | 2020 |
| Nadeem and Co Accountancy Limited | Professional & scientific | 2026 |
| Nadeem Butt Consultancy Ltd | Professional & scientific | 2022 |
| Nadeem Plumbers Limited | Construction | 2025 |
| Nadim Majid Associates Limited | Health & social care | 2024 |
| Nadriel Ltd | Professional & scientific | 2023 |
| Nadz Commercial Ltd | Real estate | 2025 |
| Nadz Properties Ltd | Real estate | 2019 |
| Nadz Services Ltd | Wholesale & retail | 2018 |
| Naeema Khilji Holdings Ltd | Financial services | 2019 |
| Naeems Tandoori Ltd | Hospitality | 2018 |