| Mummy Bakes Ltd | Manufacturing | 2015 |
| Mummyfit (Cheshire & South Manchester) Ltd | Arts & recreation | 2024 |
| Mummyfit (Cheshire) Ltd | Arts & recreation | 2019 |
| Mundo Lingue Ltd | Information & communication | 2025 |
| Murraywood Medical Limited | Health & social care | 2019 |
| Murtaza Khanbhai Ltd | Health & social care | 2018 |
| Mushroom Consultancy Ltd | Administrative & support | 2018 |
| Music Consultants and Management Limited | | 1986 |
| Must Have Houses Limited | Real estate | 2020 |
| Mustard Kick Limited | Professional & scientific | 2020 |
| Mutts With Manners Ltd | Other services | 2013 |
| Mutual Vision Technologies Limited | Information & communication | 2000 |
| MVG Communications Limited | Information & communication | 2019 |
| MW Detailing Ltd | Wholesale & retail | 2019 |
| MW Investments 2023 Limited | Financial services | 2023 |
| MXN Spine Ltd | Health & social care | 2020 |
| My Claim Group Limited | Administrative & support | 2024 |
| My Creative Life Ltd | Education | 2022 |
| My Elder Flowers Ltd | Health & social care | 2021 |
| My Favourite Shop Limited | Wholesale & retail | 2011 |
| My Future Choice Group Limited | Education | 2022 |
| My Neuro Rehab Limited | Health & social care | 2025 |
| My Plastic Surgeon Limited | Health & social care | 2016 |
| Myboutiquehomes.Com Ltd | Hospitality | 2025 |
| Mydrate Ltd | Wholesale & retail | 2026 |
| Myers Windows Ltd | Manufacturing | 2022 |
| Mykeyz Limited | Real estate | 2025 |
| Mylo-Tek Limited | Information & communication | 2001 |
| Myocardial and Cardiac Care Ltd | Health & social care | 2026 |
| Mypd Limited | Administrative & support | 2022 |
| Myrecs Limited | Information & communication | 2014 |
| Myurp Limited | Information & communication | 2019 |
| MZG Medical Limited | Health & social care | 2016 |
| MZH Associates Limited | Professional & scientific | 2018 |
| Mzhnmh Limited | Health & social care | 2023 |
| N a W Building (Contractors) Limited | Construction | 2025 |
| N a W Reynolds Building Contractors Ltd | Construction | 2024 |
| N L Ashworth Online Sales Ltd | Wholesale & retail | 2023 |
| N Mani Ltd | Health & social care | 2020 |
| N&A Property Group Ltd | Construction | 2025 |
| N&K Lomond (Prestwich) Limited | Real estate | 2020 |
| N&K Macclesfield SPV2 Limited | Real estate | 2022 |
| N&L Medical Limited | Health & social care | 2024 |
| N5 Investments Ltd | Financial services | 2017 |
| Nagai Limited | Health & social care | 2020 |
| Naidihr Limited | Information & communication | 2018 |
| Nakuna Highways Engineering Consultants Ltd | Professional & scientific | 2025 |
| Nala Exports (Holdings) Limited | Real estate | 2023 |
| Nala Exports Limited | Construction | 2015 |
| NAM Concepts Ltd | Professional & scientific | 2013 |
| Nantlais Limited | Health & social care | 2019 |
| Nardine Menassa Eyecare Limited | Health & social care | 2023 |
| NAS Property Developments Ltd | Construction | 2010 |
| Nashewring Ltd | Professional & scientific | 2020 |
| Natderm Limited | Health & social care | 2022 |
| National Academy of Personal Trainer Practitioners Ltd | Education | 2019 |
| National Construction Demolition Limited | Water & waste | 2017 |
| National Property Rentals Limited | Real estate | 2024 |
| Nations Gaming Club Limited | Information & communication | 2024 |
| Natural Wholefoods Ltd | Manufacturing | 2018 |
| Naturally Empowered Wellness Limited | Health & social care | 2014 |
| Nature Bless Crystals Ltd | Wholesale & retail | 2024 |
| Naywa & Mini Holdings Ltd | Financial services | 2026 |
| Nbriggs Holdings Limited | Financial services | 2020 |
| NCR Project Management Ltd | Professional & scientific | 2022 |
| NDB Neurosurgery Limited | Health & social care | 2018 |
| NDP Surgery Ltd | Health & social care | 2023 |
| Neequaye Vascular Services Ltd | Health & social care | 2019 |
| Neffatutu Holdings Limited | Financial services | 2025 |
| NEG Locums Ltd | Health & social care | 2021 |
| Neil Davies Architects LLP | | 2012 |
| Neil Maloney Design Associates Limited | Professional & scientific | 2010 |
| Neil Stelling Ltd | Information & communication | 2001 |
| Neil Topping Limited | Professional & scientific | 2014 |
| Neil Wickham Plastic Surgery Limited | Health & social care | 2025 |
| Nelaat Limited | Information & communication | 2025 |
| Nelesh Jeyadevan Online Ltd | Health & social care | 2023 |
| Neodyne Healthcare Solutions Ltd | Health & social care | 2021 |
| Neoquorra Limited | Information & communication | 2019 |
| Neotrak Limited | Professional & scientific | 2025 |
| Neovista Consulting Limited | Real estate | 2025 |
| Nerve Surgery Centre Limited | Professional & scientific | 2023 |
| Nether Alderley Landscaping & Forestry Limited | Agriculture & fishing | 2024 |
| NEURO7 Ltd | Health & social care | 2025 |
| Neurocentric Limited | Health & social care | 2021 |
| Neuronest IT Ltd | Wholesale & retail | 2022 |
| Neurosurgery and ENT Skills Training Limited | Health & social care | 2022 |
| Neuroterior Design Limited | Professional & scientific | 2025 |
| Neurovision Limited | Health & social care | 2019 |
| Nev's Aggregates Limited | Administrative & support | 2020 |
| New World Selling Ltd | Professional & scientific | 2020 |
| Newchurch Associates Ltd | Professional & scientific | 2012 |
| Newer Dawn Properties Limited | Construction | 2016 |
| Newgate Kennels Limited | Other services | 1959 |
| Newport Medical Ltd | Health & social care | 2015 |
| Newport Residential Ltd | Real estate | 2021 |
| NEWTCO123 Limited | Information & communication | 2019 |
| Newton Bay Ltd | Construction | 2018 |
| Newtons Mobile Welding Ltd | Manufacturing | 2017 |
| Nexa Management and Consultancy Ltd | Professional & scientific | 2026 |