| Mufura Afro-Caribbean Food Retail Store Limited | Wholesale & retail | 2025 |
| Mughalpk Limited | Hospitality | 2019 |
| Muizz Maheera Limited | Real estate | 2021 |
| Mulcare GAS Services Limited | Manufacturing | 2016 |
| Muller Senior Living Limited | Real estate | 2019 |
| Mullvenas Ltd | Wholesale & retail | 2026 |
| Multi Choice Media Ltd | Information & communication | 2020 |
| Multi Clad Limited | Construction | 2017 |
| Multicare Group Ltd | Health & social care | 2025 |
| Multicoat UK Ltd | Construction | 2006 |
| Multitask Management Services Ltd | Administrative & support | 2025 |
| Multitek Power Ltd | Manufacturing | 2008 |
| Mumbai Maska Ltd | Hospitality | 2024 |
| Munchies Birmingham Ltd | Hospitality | 2020 |
| Munir Girach Limited | Health & social care | 2015 |
| Munkar Ltd | Wholesale & retail | 2018 |
| MURCO1 Ltd | Professional & scientific | 2023 |
| Murenzaf Ltd | Transport & logistics | 2024 |
| Murjer Stays Ltd | Real estate | 2026 |
| Murphy Brothers Limited | Construction | 2000 |
| Murphy's Rock Pool Cafe Ltd | Hospitality | 2023 |
| Murray Green Limited | Administrative & support | 2013 |
| MUS Recording Production Ltd | Arts & recreation | 2023 |
| Musbil Limited | Wholesale & retail | 2018 |
| Muscle Mafia Limited | Wholesale & retail | 2015 |
| Mushtaqs Cafe (Hall Green) Limited | Hospitality | 2019 |
| Music IS OUR Sanctuary C.I.C. | Arts & recreation | 2024 |
| Musicmann Limited | Administrative & support | 2006 |
| Muslim Burial Committee Ltd | Other services | 2025 |
| Musta's Games Limited | Information & communication | 2025 |
| MUSTANG13 Ltd | Transport & logistics | 2022 |
| Mutual Mills Limited | Manufacturing | 1997 |
| Muzmarket Global Ltd | Information & communication | 2025 |
| Muzzystrictlylocs Limited | Other services | 2025 |
| MVM Automotive Ltd | Wholesale & retail | 2023 |
| MVP Business Services Ltd | Other services | 2013 |
| MVP Venture Capital UK Ltd | Construction | 2025 |
| MVT Tech Ltd | Wholesale & retail | 2026 |
| MWC Electrical Installations Ltd | Construction | 2022 |
| MWS Design Limited | Financial services | 2020 |
| My Black Gallery Ltd | Wholesale & retail | 2025 |
| My Bramcote Limited | Health & social care | 2012 |
| My Community Hub Ltd | Information & communication | 2024 |
| My Electrical Solutions Ltd | Construction | 2021 |
| My Fitted Wardrobes Ltd | Wholesale & retail | 2019 |
| My Foodcourt Limited | Wholesale & retail | 2024 |
| My Legacy Tutors Ltd | Education | 2025 |
| My New Car Group Ltd | Wholesale & retail | 2019 |
| My Personalised Suitcase Ltd | Wholesale & retail | 2024 |
| My Pillar Limited | Health & social care | 2014 |
| My Solar Ltd | Construction | 2025 |
| My Study Life Ltd | Information & communication | 2014 |
| MYCARE4U Healthcare Solutions Ltd | Health & social care | 2021 |
| Mydomain Limited | Other services | 2014 |
| MYK Services Limited | Administrative & support | 2024 |
| Mynd Care Psychotherapies Limited | Health & social care | 2023 |
| Myriad Automotive Ltd | Wholesale & retail | 2013 |
| Myriad Management Group Ltd | Real estate | 2026 |
| Myrlyn Limited | Professional & scientific | 2026 |
| Myrrhcredit Limited | Wholesale & retail | 2019 |
| Mysd Properties Ltd | Real estate | 2025 |
| Mystical Sips Ltd | Hospitality | 2025 |
| Myztro Gaming UK Ltd | Professional & scientific | 2019 |
| MZ Advisory Ltd | Other services | 2023 |
| MZA Associates Ltd | Wholesale & retail | 2025 |
| Mzcollections Ltd | Wholesale & retail | 2026 |
| Mzlogisticss Ltd | Wholesale & retail | 2025 |
| MZM Black Country Ltd | Wholesale & retail | 2020 |
| Mzobe Limited | Health & social care | 2023 |
| MZS Brothers Ltd | Education | 2024 |
| N & a Motors (West Midlands) Ltd | Wholesale & retail | 2022 |
| N & J Blair Property Ltd | Real estate | 2025 |
| N & K Varma Limited | Health & social care | 2016 |
| N a Solanki Limited | Public administration | 2022 |
| N E Home Renovations Ltd | Construction | 2025 |
| N Hair Emporium Ltd | Other services | 2025 |
| N K Locum Limited | Health & social care | 2007 |
| N L Contracts Limited | Manufacturing | 1997 |
| N Lapworth Electrical Limited | Construction | 2022 |
| N P Installations Limited | Construction | 2005 |
| N Plus P Trading Ltd | Education | 2022 |
| N R Rozwalka Limited | Manufacturing | 2015 |
| N Speed Plastering Limited | Construction | 2005 |
| N V Roofing Services Ltd | Construction | 2012 |
| N Y Travel Ltd | Transport & logistics | 2025 |
| N&D Real Estate Ltd | Real estate | 2026 |
| N&D Trans Ltd | Transport & logistics | 2017 |
| N&T Healthcare Limited | Administrative & support | 2021 |
| N'Klean Ltd | Administrative & support | 2025 |
| N-Amin Pharma Ltd | Wholesale & retail | 2023 |
| N-Lec Electrical Solutions Limited | Construction | 2014 |
| N. S. Courier Ltd | Transport & logistics | 2022 |
| N.D. Chemists Limited | Wholesale & retail | 1986 |
| N.J. Distribution (Midlands) Ltd | Wholesale & retail | 2017 |
| N.R.M. Heating Systems Ltd. | Construction | 1998 |
| N.Y.C Transport Solutions Ltd | Transport & logistics | 2025 |
| NA & C Consultants Limited | Professional & scientific | 2020 |
| NA Kumon Tuition Ltd | Public administration | 2025 |
| NA Realisations Limited | Manufacturing | 2000 |
| Nacb Holdings Limited | Professional & scientific | 2011 |