| Mullbery TH Ltd | Health & social care | 2016 |
| Multi-Filter Holdings Limited | Wholesale & retail | 1999 |
| Multifactor Europe Limited | Wholesale & retail | 1986 |
| Multimaq Limited | Real estate | 2011 |
| Multipower Group Ltd | Wholesale & retail | 1999 |
| Munatonna Ltd | Hospitality | 2025 |
| Murright Ltd | Construction | 2019 |
| MW Estates Group Ltd | Financial services | 2025 |
| MW Tyres Ltd | Wholesale & retail | 2016 |
| MW Utilities (North West) Ltd | Construction | 2020 |
| MWB Property Group Limited | Real estate | 2026 |
| MWJ Property Ltd | Real estate | 2020 |
| My Companion Pet Food Limited | Wholesale & retail | 2022 |
| My Garage Limited | Extraterritorial | 2010 |
| My Safety Services Ltd | Other services | 2022 |
| My Will Online Limited | Professional & scientific | 2024 |
| My Wrexham Limited | Information & communication | 2023 |
| Myelin Medical Consultancy Ltd | Health & social care | 2025 |
| MYL Barbers Ltd | Other services | 2024 |
| Myrf Limited | Health & social care | 2023 |
| Mysurprisedrop Limited | Wholesale & retail | 2025 |
| Mythai Wellness Ltd | Other services | 2026 |
| MYTREE4GROWTH Limited | Wholesale & retail | 2021 |
| Mytton Investments Limited | Financial services | 2019 |
| N & B Transport Limited | Transport & logistics | 2018 |
| N K Makwana Ltd | Health & social care | 2002 |
| N Penk Plastering Ltd | Construction | 2026 |
| N R J Venues Limited | Hospitality | 2021 |
| N. G. Training Solutions Ltd | Education | 2020 |
| N. Oliphant Ltd | Construction | 2007 |
| N.B.Contract Tiling Ltd | Construction | 2023 |
| N.K.C. Geotech Limited | Professional & scientific | 1986 |
| N.P Cladding Ltd | Other services | 2020 |
| Nabtech Limited | Information & communication | 2021 |
| Nagapoopathi Ltd | Wholesale & retail | 2025 |
| Nano Search & Selection Ltd | Administrative & support | 2019 |
| Nant Mill Community Trust | Arts & recreation | 2020 |
| Naso's Tasty Food Ltd | Wholesale & retail | 2018 |
| Natalia Hand Car Wash Wrexham Ltd | Administrative & support | 2025 |
| Nate Groundwork and Brickwork Limited | Construction | 2019 |
| Natematics Ltd | Education | 2023 |
| Nathan James Personnel Ltd | Administrative & support | 2024 |
| Nathan Peate Plumbing & Heating Limited | Construction | 2023 |
| Nationwide Enforcement Limited | Other services | 2021 |
| Nationwide Vehicle Funding (North Wales) Limited | Financial services | 1995 |
| Natterjack Land Management Ltd | Professional & scientific | 2019 |
| Naturabuild Ltd | Construction | 2025 |
| Natural Equine Management Ltd | Information & communication | 2019 |
| Natural Portfolio Limited | Wholesale & retail | 2014 |
| Naughty Drawer Trading Ltd | Wholesale & retail | 2024 |
| Navigate Mobile Limited | Wholesale & retail | 2023 |
| NAX Limited | Wholesale & retail | 2022 |
| Naylor Energy Services Ltd | Professional & scientific | 2025 |
| NB Engineering & Inspection Ltd | Professional & scientific | 2024 |
| NC Group Holdings Limited | Financial services | 2019 |
| NC6 Ltd | Real estate | 2019 |
| NCJ Consulting Limited | Information & communication | 2012 |
| NCP Business Solutions Ltd | Administrative & support | 2006 |
| ND Thomas Limited | Construction | 2017 |
| Ndcon Group Ltd | Extraterritorial | 2019 |
| NDT With LG Limited | Professional & scientific | 2023 |
| NE Commercial Property (GP) Limited | Financial services | 2022 |
| Neat Dale Ltd | Other services | 2007 |
| Neat Writing Limited | Other services | 2013 |
| Neededproductsun Limited | Wholesale & retail | 2023 |
| Neeson Properties Limited | Real estate | 2020 |
| Negombo Brothers Business Holdings Ltd | Administrative & support | 2025 |
| Negotiis Ltd | Other services | 2019 |
| Neil Demuth Muscle Therapy Ltd | Health & social care | 2017 |
| Neil R Bailey Limited | Construction | 2012 |
| Nelson Fabrications Limited | Construction | 2024 |
| Nelson Framing Ltd | Construction | 2022 |
| Nelson Homes (Wrexham) Limited | Real estate | 2020 |
| Nema Best Kebab Ltd | Hospitality | 2024 |
| NEO Business Finance Limited | Financial services | 2023 |
| Nestlings Forest School Limited | Education | 2023 |
| NET World Sports Limited | Wholesale & retail | 2009 |
| Neterson Holdings Limited | Manufacturing | 2010 |
| Netvoyager Systems Limited | Information & communication | 2010 |
| Netvoyager Technology Limited | Information & communication | 2010 |
| Neuxmed Ltd | Wholesale & retail | 2025 |
| New Heights Marketing Ltd | Professional & scientific | 2022 |
| New Heritage Construction Ltd | Construction | 2017 |
| New Heritage Developments Ltd | Construction | 2017 |
| New Homes Place Limited | Professional & scientific | 2015 |
| New Horizon Healthcare Services Ltd | Administrative & support | 2021 |
| New Meadow Limited | Real estate | 2018 |
| New Medics Limited | Health & social care | 2010 |
| New Wave Hair Ltd | Other services | 2018 |
| New York Nails TP Ltd | Other services | 2023 |
| New York Spa Ltd | Other services | 2026 |
| Newam Ltd | Financial services | 1999 |
| Newfa Limited | Arts & recreation | 2024 |
| Newsrap Limited | Wholesale & retail | 2013 |
| Newton Victoria Mortgages Limited | Financial services | 2022 |
| Next Generation Housing Services Limited | Health & social care | 2007 |
| Nexus Education Limited | Professional & scientific | 2019 |
| NFB Retail Ltd | Wholesale & retail | 2024 |
| NFD Forecourts Limited | Manufacturing | 2014 |
| Ngrcac Ltd. | Financial services | 2015 |