| Moughland Digital Ltd | Professional & scientific | 2021 |
| Moughland Media Limited | Arts & recreation | 2018 |
| Mountain Freedom Ltd | Professional & scientific | 2026 |
| Move (U.K) Ltd | Real estate | 2017 |
| Movement Holdings Ltd | Professional & scientific | 2021 |
| Movezy Ltd | Transport & logistics | 2023 |
| Moving Image Location Catering Ltd | Hospitality | 2025 |
| Mowglis (NW) Ltd | Other services | 2022 |
| Mpbathroomspecialists Ltd | Manufacturing | 2025 |
| MR Monty Ltd | Construction | 2024 |
| MRD Technologies Limited | Information & communication | 2019 |
| MS Global Trading Ltd | Wholesale & retail | 2018 |
| MSK Market Ltd | Wholesale & retail | 2024 |
| MSN Installations Ltd | Professional & scientific | 2026 |
| MT Fitness and Wellbeing Ltd | Wholesale & retail | 2020 |
| MTM Productions Ltd. | Professional & scientific | 2018 |
| Munchies.Halton Limited | Hospitality | 2019 |
| Murray & Wright Ltd | Real estate | 2019 |
| Musa Official Ltd | Professional & scientific | 2025 |
| Music Art MCR Ltd | Information & communication | 2025 |
| MWC European Ltd | Transport & logistics | 2025 |
| MWM Consultancy Ltd | Professional & scientific | 2005 |
| MXM14 Ltd | Transport & logistics | 2017 |
| My Body Fitness Limited | Administrative & support | 2017 |
| My Desk Mart Limited | Wholesale & retail | 2025 |
| My Sleep Health Ltd | Health & social care | 2025 |
| My Street Property Ltd | Real estate | 2026 |
| N W Stevedores Limited | Transport & logistics | 2014 |
| N.A.B Installation Services Ltd | Professional & scientific | 2013 |
| N8LOGISTICS Ltd | Transport & logistics | 2023 |
| Nanda & Nanda Limited | Other services | 2007 |
| Nanoco 2D Materials Limited | Professional & scientific | 2017 |
| Nanoco Group PLC | Professional & scientific | 2004 |
| Nanoco Life Sciences Limited | Professional & scientific | 1998 |
| Nanoco Tech Limited | Professional & scientific | 2006 |
| Nanoco Technologies Limited | Professional & scientific | 2001 |
| National Leisure Group Ltd | Education | 2023 |
| National Power Networks Ltd | Energy | 2014 |
| Nationwide Service Company Limited | Manufacturing | 2013 |
| Natura Skincare Limited | Extraterritorial | 2024 |
| Nautek Ltd | Wholesale & retail | 2025 |
| Nayannie Global Ltd | Real estate | 2021 |
| Nekaa Limited | Wholesale & retail | 2010 |
| Nelf Properties Ltd | Real estate | 2025 |
| Nemora Healthcare Solutions Limited | Information & communication | 2026 |
| NES Electrical Services Ltd | Construction | 2025 |
| Nescare Limited | Health & social care | 2020 |
| NET Zero Services Ltd | Extraterritorial | 2022 |
| Netagon Ltd | Wholesale & retail | 2018 |
| Netcore Infrastructure Limited | Information & communication | 2025 |
| Netscore Limited | Professional & scientific | 1996 |
| Network Techwork Ltd | Information & communication | 2016 |
| New ST Fish Bar Ltd | Hospitality | 2025 |
| New Star Fish Bar Ltd | Hospitality | 2026 |
| Newall TM Ltd | Construction | 2024 |
| Newby Services Ltd | Wholesale & retail | 2016 |
| Newethos Ltd | Information & communication | 2024 |
| Newman Technology Solutions Limited | Professional & scientific | 2025 |
| Nexgen Landscaping & Gardening Limited | Administrative & support | 2024 |
| Nexgen Specialists Limited | Professional & scientific | 2022 |
| Nexsole Ltd | Professional & scientific | 2025 |
| Nfil (UK) Limited | Other services | 2015 |
| Ngpod Global Limited | Wholesale & retail | 2011 |
| Nick Dunn Investments Limited | Real estate | 2023 |
| Nineteen Twelve Management Limited | Administrative & support | 2013 |
| Nissimo Technology Services Ltd | Information & communication | 2023 |
| NJB Sales Success Management Limited | Wholesale & retail | 2025 |
| NO Stress Painting and Decorating Ltd | Construction | 2026 |
| NO.1 Padel Ltd | Extraterritorial | 2019 |
| NO58 Limited | Wholesale & retail | 2025 |
| Noon Engineering Ltd | Manufacturing | 2023 |
| Norhomes Ltd | Construction | 2008 |
| North Oak Estates Ltd | Real estate | 2020 |
| North West Applications Ltd | Extraterritorial | 2024 |
| North West Basketball Partnership Community Interest Company | Arts & recreation | 2024 |
| North West Floors Limited | Wholesale & retail | 2017 |
| North West Ground Works Limited | Administrative & support | 2016 |
| North West Roller Services Limited | Manufacturing | 1990 |
| North West Stevedores Limited | Transport & logistics | 1989 |
| North West Window Tinting Limited | Other services | 2020 |
| North West Wraps Limited | Professional & scientific | 2021 |
| Northern Cast Acrylics Limited | Manufacturing | 1984 |
| Northsidefleet Ltd | Administrative & support | 2011 |
| Northwest HIV Support CIC | Health & social care | 2022 |
| Northwest Tyre Control Ltd | Transport & logistics | 2025 |
| Norton Arms (Halton) Limited | Hospitality | 2018 |
| Norton Motors Ltd | Wholesale & retail | 2026 |
| Norton Plumbing & Heating Solutions Ltd | Construction | 2025 |
| Norton Priory Museum Trust Limited(The) | Arts & recreation | 1975 |
| Nortonwood Golf Buggy's Limited | Manufacturing | 2018 |
| Novah AI Technology Limited | Information & communication | 2025 |
| Novah Limited | Wholesale & retail | 1997 |
| Novastruct UK Limited | Manufacturing | 1994 |
| November Sierra Alpha Limited | Real estate | 2018 |
| NS Care Consultancy Ltd | Professional & scientific | 2022 |
| NTS Financial Advice Ltd | Financial services | 2025 |
| NU U by Maryq Limited | Professional & scientific | 2016 |
| Nucare Limited | Wholesale & retail | 1993 |
| Numark Limited | Extraterritorial | 2002 |
| Numquam Solus Ambulabis Ltd | Professional & scientific | 2013 |