| Manor Park Residents Association Limited | Households | 1990 |
| Manor Road 2018 Limited | Professional & scientific | 2018 |
| Manor Tyres Stapleford Ltd | Wholesale & retail | 2025 |
| Manor View (Worthington) Management Company Limited | Households | 2015 |
| Manorgate Property Management Ltd | Real estate | 2025 |
| Mansara Ltd | Hospitality | 2021 |
| Mansard Media Limited | Other services | 2019 |
| Mansell Properties Limited | Professional & scientific | 1997 |
| Manselters Ltd | Professional & scientific | 2023 |
| Manser Consulting Ltd | Information & communication | 2022 |
| Mansfield Concrete 1 Ltd | Manufacturing | 2025 |
| Mansfield Court RTM Company Limited | Households | 2022 |
| Mansfield Crane & Access Limited | Administrative & support | 2001 |
| Mansfield Eats Limited | Information & communication | 2021 |
| Mansfield Electrical Services Ltd | Construction | 2020 |
| Mansfield Lettings Ltd | Real estate | 2014 |
| Mansfield Mediation Service Ltd. | Health & social care | 2014 |
| Mansfield Orthodontic Practice Limited | Health & social care | 2007 |
| Mansfield Pizza Ltd | Hospitality | 2025 |
| Mansfield Property Services Limited | Real estate | 2013 |
| Mansfield Radiators Limited | Manufacturing | 2005 |
| Mansfield Road (Hotels) Limited | Hospitality | 2026 |
| Mansfield Road Investments Limited | Financial services | 2022 |
| Mansfield Skip Hire and Waste Management Limited | Water & waste | 2018 |
| Mansfield V.E. Limited | Other services | 1997 |
| Mansfield Woodhouse Golf Club Limited | Arts & recreation | 1972 |
| Mansign Engineering Ltd. | Professional & scientific | 2001 |
| Manta Group UK Limited | Professional & scientific | 2024 |
| Manth Ltd | Education | 2024 |
| Mantic Entertainment Limited | Manufacturing | 2008 |
| Mantic Holdings Limited | Manufacturing | 2022 |
| Mantra Holistics Ltd | Other services | 2024 |
| Mantrade Limited | Administrative & support | 2000 |
| Manuka House Limited | Real estate | 2025 |
| Manx Leisure (U.K.) Limited | | 1928 |
| Manzill Limited | Real estate | 2021 |
| MAP Construction Solutions Limited | Construction | 2017 |
| MAP Financial Solutions Ltd | Financial services | 2008 |
| MAP Joinery & Building Services Limited | Construction | 2008 |
| MAP Properties (Nottingham) Limited | Professional & scientific | 2008 |
| Mapitapp Ltd | Information & communication | 2021 |
| Maple & Crown Developments Ltd | Real estate | 2026 |
| Maple Developments (Nottingham) Limited | Real estate | 2022 |
| Maple Framing Limited | Wholesale & retail | 1980 |
| Maple Geotechnical Limited | Professional & scientific | 2024 |
| Maple Group (Midlands) Limited | Construction | 2025 |
| Maple House Clinic Limited | Health & social care | 1997 |
| Maple Property Group ( Midlands ) Ltd | Construction | 2026 |
| Maplebeck Glamping Limited | Hospitality | 2026 |
| Maplebeck Holdings Limited | Real estate | 1982 |
| Mapleman Limited | Wholesale & retail | 2025 |
| Maplewell Construction Services Limited | Construction | 2013 |
| Maplewell Holdings Limited | Construction | 2023 |
| Maplewell Investments 10 Limited | Real estate | 2020 |
| Maplewell Property Solutions Limited | Real estate | 2020 |
| Maplin Sports Turf Ltd | Arts & recreation | 2024 |
| Mapperley Allstars Coaching Ltd | Other services | 2017 |
| Mapperley Construction Nottm Ltd | Construction | 2023 |
| Mapperley Day Nursery Limited | Education | 2014 |
| Mapperley Engineering Design Services Ltd | Professional & scientific | 2018 |
| Mapperley Financial Planning Limited | Financial services | 2000 |
| Mapperley Flat Roofing Ltd | Construction | 2025 |
| Mapperley Fryer Ltd | Hospitality | 2021 |
| Mapperley Golf Club Ltd | Arts & recreation | 1932 |
| Mapperley Golf Club Trading Limited | Arts & recreation | 2016 |
| Mapperley Hall Management Company Limited | Households | 1996 |
| Mapperley Heights Management Limited | Households | 2006 |
| Mapperley Interiors Limited | Construction | 2020 |
| Mapperley Investments Limited | Real estate | 2017 |
| Mapperley IT Limited | Information & communication | 2008 |
| Mapperley Lofts Ltd | Construction | 2023 |
| Mapperley Ltd | Professional & scientific | 2009 |
| Mapperley Neptune Limited | Households | 2022 |
| Mapperley Park Estates Management Ltd | Real estate | 2022 |
| Mapperley Park GR Limited | Real estate | 2021 |
| Mapperley Park Properties Ltd | Real estate | 2016 |
| Mapperley Plains Recreation and Social Club Limited | Hospitality | 1992 |
| Mapperley Plumbing and Heating Ltd | Construction | 2023 |
| Mapperley Property Ltd | Real estate | 2024 |
| Mapperley Property Management Limited | Real estate | 2010 |
| Mapperley Property Partners Limited | Real estate | 2014 |
| Mapperley Starr Company Ltd | Extraterritorial | 2019 |
| Mapperley TAN Limited | Other services | 2025 |
| Mapperley TV Repairs Limited | Other services | 2026 |
| Maps Property Solutions Ltd | Construction | 2026 |
| MAQ Engineering Consulting Ltd | Professional & scientific | 2023 |
| Maqs Lettings Ltd | Real estate | 2025 |
| Maquis Systems Limited | Information & communication | 1998 |
| MAR & MG Ltd | Wholesale & retail | 2014 |
| MAR UK Solutions Ltd | Information & communication | 2018 |
| Mar&Rob UK Properties Ltd | Real estate | 2021 |
| Mar-Let Ltd | Real estate | 2023 |
| MAR78 Property Ltd | Real estate | 2023 |
| Maradonna Limited | | 1981 |
| Maran Properties Ltd | Real estate | 2025 |
| Maranello Cars Ltd | Wholesale & retail | 2014 |
| Maranello Performance Limited | Wholesale & retail | 2023 |
| Marbeh Limited | Wholesale & retail | 2025 |
| Marbl Ltd | Wholesale & retail | 2025 |
| Marble Hart Limited | Construction | 2003 |