| M & C Home Cleaning Ltd | Administrative & support | 2011 |
| M & C Roofing Services Ltd | Construction | 2017 |
| M & D Cleaning Services Limited | Administrative & support | 2003 |
| M & G Services Limited | Water & waste | 1988 |
| M & I Legal Limited | Professional & scientific | 2025 |
| M & J Broadcast Services Limited | Information & communication | 2012 |
| M & KA Ltd | Manufacturing | 2021 |
| M & M 234 Limited | Administrative & support | 2013 |
| M & M Hub Limited | Wholesale & retail | 2025 |
| M & M Landscaping & Paving Ltd | Construction | 2022 |
| M & M Property (Nottm) Ltd | Real estate | 2024 |
| M & R Holdings Ltd | Real estate | 2025 |
| M & R Properties Lettings Limited | Real estate | 2025 |
| M & RJ Solutions Ltd | Construction | 2021 |
| M & W International Education Ltd | Education | 2023 |
| M a Broughton Holdings Limited | Financial services | 2005 |
| M a F Occupational Therapy Services Limited | Health & social care | 2017 |
| M a L Rentals Ltd | Real estate | 2024 |
| M Aesthetic Doctors Ltd | Health & social care | 2017 |
| M Ahmed & Co Accountants Ltd | Professional & scientific | 2020 |
| M and S Brothers Property Limited | Real estate | 2025 |
| M and S Energy Services Limited | Administrative & support | 2002 |
| M Ansley Consulting Ltd | Information & communication | 2018 |
| M Arayb Holdings Limited | Real estate | 2022 |
| M Aslam Accountants Limited | Professional & scientific | 2016 |
| M Automation & Controls Ltd | Professional & scientific | 2023 |
| M Bennett Construction Contractors Ltd | Construction | 2024 |
| M C Electrical Solutions Limited | Construction | 2010 |
| M C Esteban Pardo Limited | Health & social care | 2013 |
| M C Interiors Midlands Limited | Construction | 2025 |
| M C Logic (Nottm ) Ltd | Hospitality | 2011 |
| M C Management Consulting Limited | Administrative & support | 2017 |
| M C Oils Limited | Wholesale & retail | 2004 |
| M Church Plumbing & Heating Limited | Construction | 2016 |
| M Climate Solutions Ltd | Construction | 2020 |
| M Crowe Ltd | Other services | 2017 |
| M D Ellis & SON Limited | Construction | 2008 |
| M D Leech Builders LLP | | 2009 |
| M D Property Group Limited | Real estate | 2019 |
| M D Walker Technical Services Ltd | Professional & scientific | 2020 |
| M D Wright (Nottingham) Limited | Construction | 2002 |
| M E K Property Ltd | Households | 2020 |
| M F Westwick Construction Ltd | Construction | 2011 |
| M FRY Limited | Construction | 2024 |
| M G Power Network Ltd | Construction | 2016 |
| M G Rhodes Renovations Ltd | Construction | 2019 |
| M G Safety Limited | Wholesale & retail | 1976 |
| M GEE Consulting Ltd | Information & communication | 2012 |
| M Gooch Properties Limited | Real estate | 2023 |
| M H (Thread Rolling) Ltd | Wholesale & retail | 1994 |
| M H G Haulage Ltd | Transport & logistics | 2026 |
| M Hair and Beauty West Bridgford Limited | Other services | 2020 |
| M Heating Solutions Ltd | Construction | 2018 |
| M Hudson Brickwork and Trading Ltd | Construction | 2026 |
| M Hussain House Ltd | Wholesale & retail | 2026 |
| M I K Active Ltd | Financial services | 2019 |
| M J Branton (2022) Limited | Financial services | 2022 |
| M J Building & Property SVC (UK) Limited | Construction | 2014 |
| M J Care Servicing Limited | Health & social care | 2021 |
| M J Grice & SON Limited | Construction | 2004 |
| M J J O (Midlands) Limited | Real estate | 2011 |
| M J Joy Ltd | Professional & scientific | 2023 |
| M J Logic Ltd | Professional & scientific | 2024 |
| M J Maillis (UK) Limited | Manufacturing | 1996 |
| M J Print Solutions Ltd | Wholesale & retail | 2025 |
| M J R Decorating Limited | Construction | 2018 |
| M J Security Services (EM) Limited | Administrative & support | 2015 |
| M J Stanley Ltd | Information & communication | 2022 |
| M J W Asbestos Removal and Re-Insulation Services Limited | Construction | 2000 |
| M Judge & Co Limited | Manufacturing | 2010 |
| M K Plumbing and Heating Solutions Ltd | Construction | 2023 |
| M Khatoon Property Limited | Real estate | 2025 |
| M Kirton GAS Engineering Limited | Construction | 2019 |
| M L Holdings Coalville Limited | Financial services | 2018 |
| M L Roberts Limited | Real estate | 2021 |
| M Lawrence Hospitality Ltd | Hospitality | 2025 |
| M M Nominees Limited | Administrative & support | 1987 |
| M M Shopfitting & Joinery Limited | Construction | 2006 |
| M Nguyen Investments Ltd | Real estate | 2021 |
| M P C Developments (Nottingham) Limited | Construction | 2005 |
| M P Snead Limited | Health & social care | 2013 |
| M Pawlik Ltd | Administrative & support | 2022 |
| M Perrin & SON Ltd | Construction | 2015 |
| M Power Specialist Ltd | Manufacturing | 2022 |
| M R Food Nottingham Limited | Hospitality | 2023 |
| M R H Electrical Ltd | Construction | 2018 |
| M R Holmes Limited | Administrative & support | 2014 |
| M R Pro Ltd | Construction | 2022 |
| M R S Contractors Ltd | Construction | 2016 |
| M Radford Consulting Limited | Construction | 2015 |
| M Rawlings (Surveying) Limited | Professional & scientific | 2007 |
| M S and Sons Logistics Limited | Transport & logistics | 2024 |
| M S Darby Property Limited | Real estate | 2022 |
| M S Hewitt Ltd | Real estate | 2019 |
| M S Jones Design Services Limited | Professional & scientific | 2014 |
| M S Motors Notts Ltd | Wholesale & retail | 2021 |
| M Saxton Plastering Services Ltd | Construction | 2018 |
| M Shallow (Plumbing and Heating) Limited | Construction | 2002 |
| M Sheridan Ltd | Administrative & support | 2026 |
| M Siddiqui Consultants Ltd | Professional & scientific | 2009 |