| M Stones Limited | Professional & scientific | 2007 |
| M U 5039 LLP | | 2009 |
| M V Locums Limited | Manufacturing | 2011 |
| M W Goodwin Properties Limited | Construction | 2026 |
| M W M Projects Ltd | Real estate | 2003 |
| M Ward & SON Plastering and Property Maintenance Limited | Construction | 2014 |
| M Wireko Limited | Health & social care | 2013 |
| M Young Limited | Financial services | 2019 |
| M Zarafat Limited | Real estate | 2018 |
| M&B Homes & Development Ltd | Real estate | 2019 |
| M&B Properties (Nottingham) Ltd | Administrative & support | 2017 |
| M&B PVT Ltd | Wholesale & retail | 2021 |
| M&C FIX Ltd. | Wholesale & retail | 2011 |
| M&C Inspire Studios Ltd | Information & communication | 2021 |
| M&D TTS Limited | Professional & scientific | 2025 |
| M&D. Harry Ltd | Transport & logistics | 2022 |
| M&E QS Ltd | Professional & scientific | 2016 |
| M&G Home Bakery Ltd | Manufacturing | 2021 |
| M&H Corporation Ltd | Real estate | 2014 |
| M&I Investments Limited | Real estate | 2024 |
| M&J Estates Nottinghamshire Ltd | Real estate | 2023 |
| M&J Property Partners Limited | Households | 2025 |
| M&J Rental Services Ltd | Wholesale & retail | 2023 |
| M&J Umbrella Ltd | Financial services | 2023 |
| M&Js Logistics Limited | Transport & logistics | 2022 |
| M&K Collective Ltd | Manufacturing | 2025 |
| M&K Consultancy Ltd | Wholesale & retail | 2024 |
| M&K Davis Holdings Limited | Financial services | 2025 |
| M&M Acres Ltd | Real estate | 2020 |
| M&M Consultancy & Investments Limited | Real estate | 2018 |
| M&M Empires Ltd | Wholesale & retail | 2025 |
| M&M Engineering Solutions Ltd | Professional & scientific | 2025 |
| M&M Haulier Limited | Manufacturing | 2018 |
| M&M Motor Parts Ltd | Wholesale & retail | 2026 |
| M&M Properties (Notts) Limited | Real estate | 2024 |
| M&M Properties Nottingham Ltd | Real estate | 2019 |
| M&M Scaffold Solutions Ltd | Construction | 2026 |
| M&M Transport Notts Ltd | Transport & logistics | 2024 |
| M&M Travel Group Ltd | Administrative & support | 2026 |
| M&N Commercial Export Ltd | Wholesale & retail | 2021 |
| M&P (Nottingham) Ltd | Health & social care | 2013 |
| M&R Gill Limited | Real estate | 2025 |
| M&R Medtech Ltd | Health & social care | 2026 |
| M&R Perkins Ltd | Manufacturing | 2003 |
| M&R Pickering Properties Ltd | Real estate | 2017 |
| M&S Electrical Services Notts Ltd | Manufacturing | 2023 |
| M&S HMO Unique Lets Ltd | Real estate | 2026 |
| M&S Plumbing & Heating (Nottm) Limited | Construction | 2004 |
| M&S Support Services Ltd | Professional & scientific | 2025 |
| M&T Oriental Limited | Wholesale & retail | 2019 |
| M'Boa Exchange African Foods Ltd | Wholesale & retail | 2024 |
| M'Kadesh Healthcare Ltd | Health & social care | 2016 |
| M'Kadesh Staffing Solutions Limited | Health & social care | 2019 |
| M'Thimon Ltd | Professional & scientific | 2014 |
| M(&)E FM Limited | Manufacturing | 2020 |
| M-Tech Cars Limited | Wholesale & retail | 2025 |
| M-Tech Engineering Holdings Limited | Financial services | 2026 |
| M-Tour Travel Ltd | Transport & logistics | 2023 |
| M. & G. Hooper Limited | Wholesale & retail | 1960 |
| M. C. Plumbing & GAS Ltd | Construction | 2006 |
| M. M. Secretariat Limited | Professional & scientific | 1983 |
| M. Stones Building & Flooring Limited | Construction | 2008 |
| M.A GAS Solutions Ltd | Construction | 2020 |
| M.A RENOV8 Ltd | Manufacturing | 2024 |
| M.A. Aldridge Limited | Professional & scientific | 2002 |
| M.A. Mills Funeral Service Limited | Other services | 2020 |
| M.A.AUTO1 Ltd | Wholesale & retail | 2026 |
| M.A.D. Accountants Ltd | Professional & scientific | 2014 |
| M.A.S. Property Development Limited | Real estate | 2019 |
| M.Amin Holdings Ltd | Financial services | 2026 |
| M.B. Centre Ltd | Wholesale & retail | 2005 |
| M.B. Hadley Ltd | Professional & scientific | 2010 |
| M.C.A. Enterprises Ltd. | Wholesale & retail | 1992 |
| M.C.C. Haulage Limited | Transport & logistics | 2010 |
| M.C.V. Franchising Limited | Other services | 2001 |
| M.D.B Interior Solutions Limited | Construction | 2010 |
| M.D.O Shopfitting Limited | Construction | 2014 |
| M.E.H.T.Psychotherapy Limited | Professional & scientific | 2025 |
| M.Elgerray Ltd | Health & social care | 2024 |
| M.F. Kemp Electrical Services Limited | Construction | 2002 |
| M.G Future Lettings Ltd | Real estate | 2020 |
| M.G. Electrical and Plumbing Ltd | Energy | 2015 |
| M.G.U. Properties Limited | Real estate | 2011 |
| M.I Property Services Ltd | Construction | 2019 |
| M.I.A. Electrical Limited | Construction | 2012 |
| M.J. Beresford Building Contractors Limited | Construction | 2001 |
| M.J.F.Installations Limited | Administrative & support | 2015 |
| M.Knowles & Sons Limited | Real estate | 1964 |
| M.L.Electrical Services Ltd. | Construction | 2017 |
| M.L.P. Railway Maintenance Ltd. | Manufacturing | 1994 |
| M.M. Trustees Limited | Professional & scientific | 1995 |
| M.N. Singh Limited | Wholesale & retail | 2008 |
| M.N.S Civils Limited | Construction | 2021 |
| M.O.S. Cabling Limited | Construction | 1998 |
| M.R Chiropractic Ltd | Health & social care | 2023 |
| M.R. Conversions Ltd | Construction | 2022 |
| M.S. Accountancy Services Limited | Real estate | 2000 |
| M.S.F Consulting Ltd | Information & communication | 2024 |
| M.S.M Hygiene Limited | Wholesale & retail | 1998 |
| M.S.V. Furnishings Limited | Wholesale & retail | 2007 |