| Make My Plan Ltd | Information & communication | 2025 |
| Make Partnerships Limited | Construction | 2018 |
| Make Pizza Limited | Hospitality | 2018 |
| Make Projects Ltd | Construction | 2013 |
| Make Ready Department Limited | Arts & recreation | 2015 |
| Make Work FLO Ltd | Professional & scientific | 2026 |
| Makebristol Ltd | Wholesale & retail | 2022 |
| Makeitco Limited | Wholesale & retail | 2025 |
| Makepak International Limited | Manufacturing | 2024 |
| Makepeace Site Services Limited | Construction | 2025 |
| Maker Capital Ltd | Extraterritorial | 2020 |
| Makers Shed Limited | Manufacturing | 2016 |
| Makesworth Bristol Ltd | Professional & scientific | 2023 |
| Makesys Limited | Information & communication | 2014 |
| Makicuna Coffee Ltd | Wholesale & retail | 2019 |
| Makin Media Ltd | Information & communication | 2013 |
| Making Careers Happen Ltd | Education | 2024 |
| Making Planets CW Ltd | Real estate | 2023 |
| Making Planets Limited | Hospitality | 2020 |
| Making Tax Easier Ltd | Other services | 2025 |
| Making Things Work Limited | Other services | 2025 |
| Makis (Bath) Limited | Hospitality | 2010 |
| Makmit Enterprise Ltd | Information & communication | 2014 |
| Mako KIX Ltd | Manufacturing | 2025 |
| Makogilbert Ltd | Health & social care | 2015 |
| Makoservices Limited | Health & social care | 2024 |
| MAL Pill Ltd | Information & communication | 2024 |
| Malabar Cardiff Ltd | Hospitality | 2025 |
| Malabar Hill Limited | Professional & scientific | 2022 |
| Malago Insurance Brokers Limited | Financial services | 2016 |
| Malago Place (Bristol) Management Company Limited | Households | 2005 |
| Malago Play Association Ltd. | Health & social care | 2002 |
| Malago Rise Management Company Ltd | Households | 2023 |
| Malamo Relocation Partners Limited | Real estate | 2023 |
| Malamute Ltd | Financial services | 2011 |
| Malcolm Cheetham Supply Chain Consultant Ltd | Professional & scientific | 2012 |
| Malcolm Lippiatt Homes (NSP) Limited | Construction | 2007 |
| Malex Interiors Ltd | Construction | 2024 |
| Maley Project Solutions Ltd | Construction | 2025 |
| Maliarchuk Limited | Administrative & support | 2025 |
| Malik & Ahlawat Transportation Ltd | Transport & logistics | 2025 |
| Malik & Sons (Yatton) Ltd | Hospitality | 2015 |
| Malik Foodstore Limited | Wholesale & retail | 2025 |
| Malik Health Ltd | Professional & scientific | 2023 |
| Malik Merchandise Limited | Wholesale & retail | 2024 |
| Malik Property Holdings Limited | Real estate | 2021 |
| Malik Property Limited | Administrative & support | 2014 |
| Malik Property Rentals LLP | | 2023 |
| Malika & Sons Limited | Hospitality | 2023 |
| Malika Movement CIC | Health & social care | 2026 |
| Malikam Ltd | Real estate | 2021 |
| Maliki Thobes Ltd | Wholesale & retail | 2025 |
| Malikqadir Ltd | Transport & logistics | 2024 |
| Maliks Property Rentals Limited | Real estate | 2025 |
| Maliks Supermarket Ltd | Wholesale & retail | 2010 |
| Malkon LP | | 2012 |
| Mall Brickwork Ltd | Construction | 2018 |
| Mall Lettings Limited | Real estate | 2018 |
| Mallard Ventures Limited | Real estate | 2023 |
| Mallen Studio Limited | Professional & scientific | 2026 |
| Mallett & SON (Antiques) Limited | Professional & scientific | 2018 |
| Mallett Limited | Professional & scientific | 2018 |
| Mallin Limited | Arts & recreation | 2008 |
| Mallow & Chalk Ltd | Manufacturing | 2023 |
| Mallow Properties Limited | Households | 1973 |
| Malm Consulting Services Ltd | Professional & scientific | 2026 |
| Malmar Optical Holdings Limited | Wholesale & retail | 2019 |
| Malt & Hops Limited | Hospitality | 2013 |
| Malt Investments Limited | Real estate | 2004 |
| Malvern Chase (Tewkesbury) Management Company Limited | Other services | 2017 |
| MAM Begay Enterprise Limited | Health & social care | 2016 |
| MAM Care Limited | Health & social care | 2021 |
| Mama Bear's Day Nursery Ltd | Health & social care | 2002 |
| Mama Cleo's Kitchen Ltd | Hospitality | 2024 |
| Mama Coaching Ltd | Administrative & support | 2022 |
| Mama ET MOI Limited | Wholesale & retail | 2015 |
| Mamas Bristol CIC | Health & social care | 2020 |
| Mamg (Australia) Limited | Administrative & support | 2012 |
| Mamg 2 Limited | Administrative & support | 2003 |
| Mamg Asset Management (Holdings) Limited | Administrative & support | 2006 |
| Mamg Asset Management Group Ltd | Professional & scientific | 2009 |
| Mamg Asset Management Limited | Administrative & support | 2005 |
| Mamg Asset Management Services Limited | Construction | 1994 |
| Mamg Group Services Limited | Construction | 2004 |
| Mamg Healthcare Limited | Administrative & support | 2003 |
| Mamg Infrastructure Management Limited | Administrative & support | 2015 |
| Mamg Limited | Extraterritorial | 2011 |
| Mamg Properties Ltd | Construction | 1994 |
| Mamg Services Limited | Financial services | 2001 |
| Mammalcreate Limited | Professional & scientific | 2004 |
| Mammoth Media Ltd | Arts & recreation | 2026 |
| Mammoth Structural Solutions Ltd | Professional & scientific | 2023 |
| Mammoth Tyres Limited | Professional & scientific | 1983 |
| Mamo Intravel CIC | Education | 2026 |
| Mamtora Ophthalmic Care Ltd | Administrative & support | 2018 |
| MAMU80 Transport Limited | Transport & logistics | 2019 |
| Mamun Bristol Ltd | Hospitality | 2021 |
| MAN Down Investments Ltd | Real estate | 2022 |
| MAN Them Security Ltd | Administrative & support | 2021 |
| MAN With a Drone Ltd | Other services | 2017 |