| Malt Shovel (Wolverhampton) Limited | Hospitality | 2016 |
| Malver Limited | Real estate | 1973 |
| Malvern Gardens Management Company Ltd | Households | 2017 |
| Malvin Fred Empire Limited | Administrative & support | 2015 |
| Mama Cici Ltd | Hospitality | 2023 |
| Mama Lur's Caribbean Kitchen Ltd | Hospitality | 2020 |
| Mama Simi African Kitchen Limited | Hospitality | 2025 |
| Mamalco Ltd | Wholesale & retail | 2025 |
| Mambo-Tox Limited | Professional & scientific | 1999 |
| Mamelon Ltd | Health & social care | 2021 |
| Mami & GT Limited | Education | 2025 |
| Mamka Electrical Ltd | Construction | 2025 |
| Mamman Estates Limited | Real estate | 2025 |
| Mamsons UK Limited | Wholesale & retail | 2023 |
| MAN & Van Groups Ltd | Transport & logistics | 2025 |
| MAN KEE UK Interior Renovation Ltd | Construction | 2023 |
| MAN on the Horse Music Ltd | Wholesale & retail | 2022 |
| Manage Houses Limited | Real estate | 2022 |
| Management Company 1 Ltd | Professional & scientific | 2021 |
| Management System Certification Ltd | Professional & scientific | 2005 |
| Manak Properties Limited | Real estate | 2024 |
| Mancroft Healthcare Limited | Health & social care | 2011 |
| Mancroft Holdings Limited | Real estate | 2016 |
| Mancroft Housing Ltd | Hospitality | 2017 |
| Manda Midlands Ltd | Professional & scientific | 2003 |
| Mandal Consulting Ltd | Health & social care | 2020 |
| Mandal Properties Ltd | Real estate | 2022 |
| Mandal Real Estate LLP | | 2022 |
| Mandeep Transport (WM) Ltd | Transport & logistics | 2026 |
| Mandemz Kitchen Ltd | Hospitality | 2024 |
| Mandy Consultancy Limited | Other services | 2023 |
| Manestella Ltd | Wholesale & retail | 2019 |
| Manforce Construction Limited | Construction | 2025 |
| Manga Ltd | Professional & scientific | 2017 |
| Manga Metal Fabrication Ltd | Manufacturing | 2022 |
| Mangwell Limited | Real estate | 2022 |
| Manhattan Supermarket Ltd | Wholesale & retail | 2023 |
| Mani Tyre Centre Ltd | Wholesale & retail | 2018 |
| Manijun Property Limited | Real estate | 2024 |
| Manisakk Construction Limited | Construction | 2016 |
| Manjindar &Co Limited | Real estate | 2020 |
| Manjinder Singh Ltd | Transport & logistics | 2018 |
| Manjit Transport Ltd | Transport & logistics | 2023 |
| Manjtransport Limited | Transport & logistics | 2025 |
| Manju's Golgappe Ltd | Hospitality | 2025 |
| Mann + Hummel (UK) Limited | Manufacturing | 1996 |
| Mann Goods Ltd | Wholesale & retail | 2025 |
| Mann Investment Group Limited | Real estate | 2025 |
| Mann Roadways Limited | Transport & logistics | 2014 |
| Mann Wealth Group Ltd | Real estate | 2026 |
| Mannat Designs UK Ltd | Wholesale & retail | 2023 |
| Mannex Healthcare Ltd. | Health & social care | 2013 |
| Manning Machine Tools Limited | Wholesale & retail | 2009 |
| Manning Media Limited | Information & communication | 2013 |
| Manning Tools Limited | Real estate | 1990 |
| Manor Farm Barns (Essington) Limited | Households | 2012 |
| Manor House (Tettenhall) Limited | Households | 1968 |
| Manor Payroll Ltd | Administrative & support | 2024 |
| Manor Ville Records Ltd | Information & communication | 2023 |
| Manos Grill & Pizza Ltd | Hospitality | 2020 |
| Manpower 247 Ltd | Other services | 2023 |
| Manpreet Investments Ltd | Real estate | 2012 |
| Manrkanthony Ltd | Transport & logistics | 2025 |
| Mansa Construction Ltd | Construction | 2020 |
| MANSBESTFRIEND4LIFE Ltd | Wholesale & retail | 2026 |
| Mansfield Brewery Limited | Extraterritorial | 1925 |
| Mansfield Brewery Trading Limited | Manufacturing | 1947 |
| Mansfieldroofing Limited | Construction | 2025 |
| Mansion Court Management Limited | Real estate | 1984 |
| Manson Court Property Owners Association Limited | Households | 2009 |
| Mansta Productions Limited | Information & communication | 2019 |
| Mansty Racing Limited | Arts & recreation | 2021 |
| Mansync Ltd | Transport & logistics | 2024 |
| Mantas Delivery Ltd | Transport & logistics | 2017 |
| Mantex Embroideries Limited | Manufacturing | 1996 |
| Mantodav Global Business & Trade Limited | Hospitality | 2024 |
| Mantra Luxe Ltd | Wholesale & retail | 2026 |
| Manu Makkar Logistics Ltd | Transport & logistics | 2025 |
| Manunieo Wade's Limited | Health & social care | 2021 |
| Manuteck Limited | Professional & scientific | 2021 |
| Many Things Limited | Extraterritorial | 2025 |
| MAP Transport 2020 Limited | Transport & logistics | 2020 |
| Mapad Holdings Limited | Financial services | 2018 |
| Mapad Management Limited | Real estate | 2020 |
| Maple (393) Limited | Households | 2015 |
| Maple Court (Penn) Management Ltd | Households | 2023 |
| Maple Leaf Garage Limited | Wholesale & retail | 1957 |
| Maple Motor Services Limited | Administrative & support | 2002 |
| Mapleton Care Group HR1 Ltd | Administrative & support | 2024 |
| Mapleton Care Group HR2 Ltd | Administrative & support | 2024 |
| Mapleton Care Group Ltd | Health & social care | 2019 |
| Maplewood Homes (Midlands) Limited | Construction | 2005 |
| Maplewood Homes (Wolverhampton) Limited | Real estate | 2005 |
| Mapyourgym Limited | Arts & recreation | 2024 |
| Maqsood MI Traders Limited | Wholesale & retail | 2026 |
| Mar@Flo Corporate Ltd | Transport & logistics | 2025 |
| Marabans Limited | Hospitality | 2013 |
| Maragliano Ltd | Hospitality | 2021 |
| Maragon Training and Consultancy Ltd | Professional & scientific | 2024 |
| Maranatha Herbal Solutions Ltd | Manufacturing | 2026 |