| MSG (Preston) Limited | Construction | 2014 |
| MSG Building & Construction Limited | Construction | 2016 |
| MSG Landscaping & Grounds Maintenance Limited | Administrative & support | 2016 |
| Msquared Joinery Ltd | Construction | 2023 |
| MTS Logistic Solutions Limited | Professional & scientific | 2009 |
| Mulberry Recovery Limited | Water & waste | 2009 |
| Mulberry Transport Limited | Transport & logistics | 2018 |
| Mulberry Transport UK Limited | Transport & logistics | 2022 |
| Mulberry Vehicle Repairs Limited | Wholesale & retail | 2017 |
| Mulberry Waste Holdings Limited | Professional & scientific | 2008 |
| Mulberry Waste Limited | Water & waste | 1995 |
| Muller Milner Ltd | Wholesale & retail | 2025 |
| Multicivils Limited | Construction | 2025 |
| Multipave (NW) Limited | Construction | 2007 |
| Multipave Civils Limited | Construction | 2025 |
| Multipave Infrastructure Limited | Financial services | 2026 |
| Multizia Ltd | Wholesale & retail | 2025 |
| Munday M&E Surveying Ltd | Professional & scientific | 2025 |
| Murphy’S Fleet AID Ltd | Professional & scientific | 2024 |
| MVD Holdings Ltd | Administrative & support | 2025 |
| MW QS Services Ltd | Professional & scientific | 2023 |
| MW Security Consultants Ltd | Professional & scientific | 2026 |
| My Club Cash Back Bwfc Ltd | Information & communication | 2026 |
| My Club Cash Back Ltd | Financial services | 2026 |
| My Club Cash Back Pvfc Ltd | Information & communication | 2026 |
| My Trusted Accountant Limited | Professional & scientific | 2020 |
| MYKURRY4YOU Ltd | Hospitality | 2025 |
| N & K Harvey Funerals Limited | Other services | 2000 |
| N Grays Couriers Ltd | Transport & logistics | 2026 |
| Napjmck Ltd | Professional & scientific | 2026 |
| Nash Travis Limited | Wholesale & retail | 2026 |
| Naylors Transport (Leyland) Limited | Transport & logistics | 1955 |
| NBG Garden Maintenance Ltd | Administrative & support | 2023 |
| NCH Property Ltd | Real estate | 2026 |
| Nelsonpro Developments Limited | Real estate | 2025 |
| Nesd Site Services Ltd | Construction | 2025 |
| NET Zero Hospitality UK Ltd | Hospitality | 2023 |
| Network Solutions Assist Limited | Information & communication | 2014 |
| Neuro IT Limited | Administrative & support | 2017 |
| Neuronimity Limited | Information & communication | 2024 |
| Neutral Electrical Solutions NW Ltd | Construction | 2022 |
| New Testament Ltd | Arts & recreation | 2017 |
| Newheights Ltd | Construction | 2013 |
| Newheights Property Ltd | Real estate | 2024 |
| Nexus Property Holding Group Ltd | Real estate | 2025 |
| Nicola Thompson Massage & Therapies Ltd | Health & social care | 2019 |
| Nide Ltd | Information & communication | 2017 |
| Nightingale Wood Limited | Extraterritorial | 1995 |
| Nimatt Limited | Professional & scientific | 2023 |
| Ninab Marketing Ltd | Professional & scientific | 2024 |
| Ninjacakecards Limited | Wholesale & retail | 2019 |
| Niss Ltd | Manufacturing | 2022 |
| Nitecrest Properties Limited | Administrative & support | 2004 |
| Nitro Shine Ltd | Wholesale & retail | 2026 |
| NJ Joinery Ltd | Construction | 2026 |
| NJM Consultancy Services Limited | Professional & scientific | 2021 |
| NMC Developments (Manchester) Ltd | Construction | 2007 |
| Nmrd Ltd | Administrative & support | 2024 |
| NO 1 Discount Sheds Ltd | Manufacturing | 2022 |
| NO. 7 Hair Limited | Other services | 2013 |
| NO. 77 Hair Limited | Other services | 2010 |
| NO.1 Leyland Ltd | Hospitality | 2019 |
| NO1 Discount Sheds and Fences Limited | Manufacturing | 2019 |
| Norlec Holdings Limited | Professional & scientific | 2006 |
| Norlec Property Ltd | Construction | 2023 |
| Norlec Sheet Metal Limited | Manufacturing | 2009 |
| North Star Connect Group Ltd | Information & communication | 2026 |
| North to South Theatre Ltd | Arts & recreation | 2020 |
| North West DRY Lining Services Ltd | Construction | 2021 |
| North West Garage Services Limited | Wholesale & retail | 2023 |
| North West Transport Supplies Limited | Manufacturing | 2002 |
| North West Truck Assist Limited | Transport & logistics | 2020 |
| Northeagle Solutions Ltd | Professional & scientific | 2020 |
| Northern Storage and Interiors Limited | Wholesale & retail | 1993 |
| Northglow Properties Limited | Real estate | 2026 |
| Northgrid Electrical Limited | Construction | 2026 |
| Northpoint AI Ltd | Information & communication | 2024 |
| Norwood DRY Lining Ltd | Construction | 2022 |
| Notre Homes Limited | Construction | 2020 |
| Notre Homes NW Limited | Construction | 2019 |
| Notre Management Ltd | Households | 2026 |
| Novacraft Construction Ltd | Construction | 2024 |
| Novareign Ltd | Real estate | 2025 |
| Noxera Ltd | Information & communication | 2026 |
| NOY Bhai Restaurant Ltd | Hospitality | 2019 |
| NPA Rentals Ltd | Construction | 2025 |
| NPL2016 Limited | Administrative & support | 2016 |
| Npsy Limited | Health & social care | 2023 |
| NR Rigby Ltd | Health & social care | 2015 |
| Nska Ltd | Health & social care | 2018 |
| Nude (Liverpool) Ltd | Other services | 2024 |
| Nulrun Limited | Professional & scientific | 2020 |
| Numbers Racing Ltd | Professional & scientific | 1990 |
| Nurse LED Aesthetics Ltd | Other services | 2019 |
| NW Composite Decking Limited | Wholesale & retail | 2019 |
| NW Composite Limited | Wholesale & retail | 2024 |
| Nw-Services (Leyland) Ltd | Wholesale & retail | 2015 |
| NW1 Actor Management Limited | Arts & recreation | 2026 |
| NW1 Manchester Limited | Education | 2026 |
| NW1 Theatre School Limited | Administrative & support | 2024 |