| Luxe Skin Aesthetics Training Academy Ltd | Education | 2026 |
| Luxury Bathrooms Ltd | Construction | 2023 |
| Luxury Marble & Craft Gallery Ltd | Manufacturing | 2025 |
| Lyng Community Association | Real estate | 2000 |
| Lyng Management Company Limited | Households | 2011 |
| Lyng MOT & Service Centre Ltd | Manufacturing | 2015 |
| Lynx Valeting Services Limited | Administrative & support | 2025 |
| Lyons Security Limited | Administrative & support | 2014 |
| M & a Direct Ltd | Transport & logistics | 2025 |
| M & a Ranu Properties Ltd | Real estate | 2021 |
| M & J Service Birmingham Ltd | Transport & logistics | 2023 |
| M & M Builders and Designers Ltd | Construction | 2002 |
| M & S Shutter Services Limited | Other services | 1996 |
| M & S Supplies 2010 Limited | Wholesale & retail | 2010 |
| M a B Vision Ltd | Health & social care | 2012 |
| M B Vehicle Solutions Ltd | Wholesale & retail | 2014 |
| M C P Plumbing & Heating (Midlands) Ltd | Manufacturing | 2010 |
| M D Electrical Services (WM) Limited | Construction | 2025 |
| M Dosanjh Limited | Transport & logistics | 2023 |
| M M Taping Ltd | Construction | 2026 |
| M R Builders (B'Ham) Ltd | Construction | 2018 |
| M S Gill Constructions Ltd | Construction | 2024 |
| M S Investment Property Ltd | Real estate | 2023 |
| M Saga Design Solutions Ltd | Professional & scientific | 2025 |
| M Samra Ltd | Transport & logistics | 2017 |
| M Summit Holdings Limited | Real estate | 2026 |
| M T Patel Limited | Professional & scientific | 2015 |
| M V Mobile Service Ltd | Other services | 2016 |
| M Verma Ltd | Manufacturing | 2019 |
| M&N Midland Investments Ltd | Real estate | 2025 |
| M.H.A Accounting Limited | Professional & scientific | 2024 |
| M.K Interior Designs(Uk) Ltd | Manufacturing | 2018 |
| M.R. Foods Birmingham Limited | Wholesale & retail | 2022 |
| M.S Solid Construction Ltd | Construction | 2019 |
| M13 Investments Ltd | Real estate | 2024 |
| MAA Property Consultants Ltd | Real estate | 2016 |
| Maan Brothers Transport Ltd | Transport & logistics | 2025 |
| Maan Saab Ltd | Wholesale & retail | 2024 |
| Maan Staircase Ltd | Construction | 2022 |
| Maanvi Technologies Ltd | Information & communication | 2015 |
| Mable Mawarire Concepts UK Limited | Health & social care | 2013 |
| Mackl Construction Limited | Construction | 2021 |
| Macktrans Ltd | Transport & logistics | 2024 |
| Macroweb Solutions Limited | Information & communication | 1998 |
| Madina Carpets & Furniture Limited | Administrative & support | 2022 |
| Madina Trades Ltd | Wholesale & retail | 2026 |
| Madinatul Uloom West Bromwich (Muwb) Limited | Education | 2016 |
| Magentaverse CIC | Education | 2023 |
| Magic Dinner Limited | Hospitality | 2026 |
| Magic Property Ltd | Real estate | 2024 |
| Magic Sign Ltd | Professional & scientific | 2024 |
| Magics Recovery Solution Ltd | Transport & logistics | 2025 |
| Magitan Ltd | Wholesale & retail | 2025 |
| Maha Tejas UK Ltd | Professional & scientific | 2023 |
| Mahanaim Healthcare Limited | Health & social care | 2024 |
| Mahavin Ltd | Transport & logistics | 2025 |
| Mahay Transport Ltd | Transport & logistics | 2023 |
| Mahir's Experience Holdings Limited | Professional & scientific | 2009 |
| Mahirs Foundation CIC | Hospitality | 2025 |
| Mahir`S Experience Ltd | Manufacturing | 2005 |
| Main Street OFF Licence Ltd | Wholesale & retail | 2025 |
| Maintenance SC Ltd | Administrative & support | 2025 |
| Majha Properties Limited | Real estate | 2019 |
| Majhail Logistics Ltd | Transport & logistics | 2025 |
| Majhail Properties Ltd | Real estate | 2024 |
| Majid Hairdresser’S Ltd | Other services | 2021 |
| Major Builders (UK) Ltd | Construction | 2014 |
| Majorsell Holdings Limited | Wholesale & retail | 2025 |
| Majorsell International Limited | Wholesale & retail | 1996 |
| Majorsell Limited | Wholesale & retail | 1980 |
| Makalu Kitchen Ltd | Hospitality | 2025 |
| Malachi Housing Limited | Real estate | 2022 |
| Maldent Limited | Health & social care | 2023 |
| Malhi Beer and Wines Ltd | Wholesale & retail | 2019 |
| Malhi Investment Properties Ltd | Real estate | 2019 |
| Malhi Meat Centre Ltd | Wholesale & retail | 2017 |
| Maliki AMA Ltd | Real estate | 2026 |
| Maluka Homes Ltd | Real estate | 2020 |
| Malwa Crockery Hire Ltd | Administrative & support | 2013 |
| Malwa Logistics U.K. Limited | Transport & logistics | 2022 |
| MAM Kebabs Ltd | Hospitality | 2024 |
| Mamy Care Link Ltd | Health & social care | 2019 |
| Manak Limited | Real estate | 2009 |
| Manan Transport Ltd | Transport & logistics | 2024 |
| Mander Trucking Limited | Transport & logistics | 2019 |
| Mandy Services Limited | Information & communication | 2026 |
| Manerio Jewels Ltd | Wholesale & retail | 2022 |
| Manesa Consultancy Ltd | Administrative & support | 2025 |
| Manessa Claddings Ltd | Construction | 2025 |
| Mani Transport Ltd | Transport & logistics | 2019 |
| Manindar Ltd | Construction | 2026 |
| Manjinder S Ltd | Construction | 2023 |
| Mann and Co Solicitors Limited | Professional & scientific | 2017 |
| Mann Logistics Ltd | Transport & logistics | 2024 |
| Mann Property Group Limited | Real estate | 2020 |
| Mann Supermarket Ltd | Wholesale & retail | 2026 |
| Mann's Investments and Properties Limited | Real estate | 2018 |
| Manns Luxury Properties Ltd | Real estate | 2023 |
| Mannys Boutique UK Ltd | Wholesale & retail | 2021 |
| Marco Cable Management Limited | Extraterritorial | 2003 |