| Malle Property Development Ltd | Construction | 2025 |
| Mallick Medical Services Ltd | Health & social care | 2025 |
| Mallie & Co Holdings Ltd | Financial services | 2025 |
| Mallinson Consulting Limited | Professional & scientific | 2014 |
| Mallock Operations Limited | Other services | 2021 |
| Mallories Ltd | Hospitality | 2017 |
| Mallory ( Leicester) Ltd | Construction | 2009 |
| Mallory Meadows Limited | Extraterritorial | 2016 |
| Mallory Park Fisheries Limited | Agriculture & fishing | 1983 |
| Mallory Performance Limited | Wholesale & retail | 2017 |
| Mallu Autobroker Ltd | Wholesale & retail | 2026 |
| Mallu Boys PUB Limited | Hospitality | 2025 |
| Mallu Driving Instructor Limited | Education | 2024 |
| Mallu Travel Ltd | Transport & logistics | 2017 |
| Maloney Construction & Property Group Ltd | Construction | 2025 |
| Maloney Developments Limited | Real estate | 2026 |
| Maloy Holdings Limited | Financial services | 2026 |
| Maloy Property Investments Ltd | Real estate | 2020 |
| Malsa Investments Limited | Real estate | 2019 |
| Malsbury Ltd | Real estate | 2015 |
| Malson Capital Limited | Professional & scientific | 2018 |
| Malswick Logistics Ltd | Transport & logistics | 2014 |
| Maltby Haulage Ltd | Transport & logistics | 2014 |
| Maltings Flats (Billesdon) Limited (the) | Households | 1974 |
| Malvern Railway Ltd | Hospitality | 2022 |
| Malwa Belt Transport Ltd | Transport & logistics | 2024 |
| Malwandle Ltd | Health & social care | 2018 |
| Malway Property Group Ltd | Real estate | 2022 |
| MAM Clothing Limited | Wholesale & retail | 2022 |
| MAM Investment Group Ltd | Construction | 2021 |
| Mama MIA Food Events Ltd | Hospitality | 2025 |
| Mama Vino Ltd | Wholesale & retail | 2024 |
| Mamas Playroom Ltd | Health & social care | 2026 |
| Mamatabs Limited | Hospitality | 2021 |
| Mamba One Ltd | Real estate | 2024 |
| Mammoth Hill Industries Ltd | Wholesale & retail | 2024 |
| Mamoottil Limited | Health & social care | 2025 |
| Mamos Auto Care Ltd | Wholesale & retail | 2023 |
| MAN Enterprises Ltd | Wholesale & retail | 2008 |
| MAN for Site Limited | Construction | 2017 |
| MAN KAN VDB Limited | Wholesale & retail | 2005 |
| MAN Multani UK Limited | Hospitality | 2020 |
| Man-Tek Services Limited | Information & communication | 1998 |
| MAN20 Ltd | Real estate | 2020 |
| Manage MOI Ltd | Information & communication | 2025 |
| Management IQ Consulting Ltd | Professional & scientific | 2013 |
| Managing C.D.M. Limited | Construction | 1995 |
| Managingyourproject.Com Limited | Professional & scientific | 2015 |
| Manak Developments Ltd | Construction | 2020 |
| Manak Financial Ltd | Professional & scientific | 2013 |
| Manak Mann Limited | Construction | 2015 |
| Manal London Ltd | Wholesale & retail | 2020 |
| Manan G Enterprises Ltd | Health & social care | 2018 |
| MANAN26 Limited | Real estate | 2024 |
| Manasseh Care and Supported Living Limited | Health & social care | 2025 |
| Manasseh Ltd. | Health & social care | 2014 |
| Manav Seva Community Centre Community Interest Company | Health & social care | 2018 |
| Manb (Leicester) Ltd | Transport & logistics | 2022 |
| Manb SS Ltd | Transport & logistics | 2018 |
| Manchester MCR Wholesale Ltd | Wholesale & retail | 2025 |
| Mandala Spice Limited | Hospitality | 2025 |
| Mandalia Investments Ltd | Real estate | 2019 |
| Mandaliafoods Ltd | Hospitality | 2020 |
| Mandasol Properties LLP | | 2017 |
| Mander Building Contractors Ltd | Construction | 2022 |
| Manders Properties Limited | Real estate | 2023 |
| Mandi and Biryani House Limited | Hospitality | 2026 |
| Mandico Ltd | Hospitality | 2022 |
| Mandora Medicals Limited | Health & social care | 2018 |
| Mandora Realty Limited | Real estate | 2021 |
| Mandsad Limited | Health & social care | 2016 |
| Mandy K Properties Ltd | Real estate | 2023 |
| Mandy Support Ltd | Health & social care | 2025 |
| Mandys Constructions Ltd | Construction | 2023 |
| Mane on Main Ltd | Other services | 2022 |
| Manea 3 M Ltd | Transport & logistics | 2017 |
| Manette Limited | Administrative & support | 2004 |
| Mangal Restaurant Syston Ltd | Hospitality | 2019 |
| Mangal Syston Ltd | Hospitality | 2025 |
| Mangal Thurmaston Limited | Hospitality | 2024 |
| Mangalam Ltd | Real estate | 2022 |
| Mangalam SSR Limited | Hospitality | 2023 |
| Mangalam Traders Ltd | Wholesale & retail | 2025 |
| Mangat Transport Ltd | Transport & logistics | 2023 |
| Mangera Ltd | Transport & logistics | 2020 |
| Mangoslice (Creative) Limited | Professional & scientific | 2012 |
| Manhani Transport Ltd | Transport & logistics | 2016 |
| Manharry Painting Ltd | Construction | 2025 |
| Mani Mani Limited | Professional & scientific | 2026 |
| Mani Zone Ltd | Professional & scientific | 2005 |
| Maniflex Holdings Limited | Manufacturing | 2016 |
| Manis SER Limited | Professional & scientific | 2016 |
| Manisco Services Ltd | Hospitality | 2025 |
| Manisha Patel Ltd | Extraterritorial | 2022 |
| Manishaa JP Trading Ltd | Wholesale & retail | 2024 |
| Manishaben Kumudbhai Patel Ltd | Extraterritorial | 2022 |
| Maniweb Limited | Information & communication | 2025 |
| Manjhu Ltd. | Real estate | 2019 |
| Manjit Singh UK Service Limited | Administrative & support | 2023 |
| Mankda Ltd | Professional & scientific | 2015 |