| Made by DM Ltd | Professional & scientific | 2006 |
| Made Coaching Limited | Education | 2023 |
| Made NOT to Last Ltd | Wholesale & retail | 2019 |
| Made of Music (Global) Ltd | Wholesale & retail | 2014 |
| Made Twofold Limited | Professional & scientific | 2026 |
| Madeestates Ltd | Households | 2023 |
| Maderita Ltd | Financial services | 2019 |
| Madhar Properties Ltd | Real estate | 2019 |
| Madina International Food Centre Ltd | Wholesale & retail | 2026 |
| Madini Ltd | Health & social care | 2022 |
| Madoli Limited | Financial services | 2020 |
| Madonna Systems Limited | Wholesale & retail | 2025 |
| Madzudzo Limited | Health & social care | 2012 |
| Maes Howe Communications Limited | Professional & scientific | 2002 |
| Maestro Willbern Limited | Real estate | 2021 |
| Maetheon Ltd | Wholesale & retail | 2026 |
| Maeve Print and Signs Ltd | Manufacturing | 2026 |
| Mafhh International Ltd | Manufacturing | 2021 |
| Mafta Heritage Ltd | Wholesale & retail | 2025 |
| Magan House Ltd | Real estate | 2025 |
| Magic Artist Ltd | Wholesale & retail | 2023 |
| Magic Garden Studios Ltd | Information & communication | 2025 |
| Magic Memorials Limited | Other services | 2025 |
| Magic Scissors LOW Hill Ltd | Other services | 2026 |
| Magical MC CIC | Education | 2020 |
| Magical Mind Coaching Ltd | Education | 2020 |
| Magical Views Limited | Professional & scientific | 2019 |
| Magleyport Ltd | Transport & logistics | 2019 |
| Magna Services Ltd | Wholesale & retail | 2020 |
| Magnat Retail Ltd | Wholesale & retail | 2025 |
| Magnific Limited | Professional & scientific | 2015 |
| Magnus Scientific Solutions Limited | Wholesale & retail | 2015 |
| Mags Components Ltd | Wholesale & retail | 2020 |
| Mahadev Convenience Store Ltd | Wholesale & retail | 2018 |
| Mahaka Holdings Limited | Financial services | 2014 |
| Mahaka Properties Limited | Real estate | 2018 |
| Mahal Dental Care Ltd | Health & social care | 2025 |
| Mahal News Ltd | Wholesale & retail | 2022 |
| Mahavir Courier Ltd | Transport & logistics | 2025 |
| Mahey Transport Limited | Transport & logistics | 2024 |
| Mahilpur Limited | Wholesale & retail | 2020 |
| Mahrok Builders Ltd | Other services | 2025 |
| Main Residential (Logistics) Limited | Transport & logistics | 2021 |
| Mainline Property Developments Ltd | Real estate | 2020 |
| Mainline Salvage & Recovery Ltd | Water & waste | 2016 |
| Mainline Vehicle Hire Ltd | Administrative & support | 2025 |
| Maintenance Online Ltd | Real estate | 2017 |
| Maison Holdings Limited | Real estate | 2023 |
| Maison Retail Ltd | Wholesale & retail | 2025 |
| Maison Sibella Ltd | Real estate | 2025 |
| Maisons Real Estate Ltd | Real estate | 2021 |
| Majestic Buildings Ltd | Construction | 2023 |
| Majestic Healthcare Ltd | Hospitality | 2018 |
| Majestic House Albrighton Limited | Households | 2023 |
| Majestic M Properties Ltd | Real estate | 2026 |
| Majestic NBA Limited | Real estate | 2024 |
| Majestic Property (Midlands) Limited | Real estate | 2012 |
| Majestic SBP Limited | Financial services | 2022 |
| Majestic Travel Limited | Administrative & support | 2019 |
| Majhaa Ltd | Transport & logistics | 2024 |
| Majk Ltd | Financial services | 2025 |
| Majk Transport Limited | Transport & logistics | 2018 |
| Major Environmental Specialist Limited | Professional & scientific | 2008 |
| Major Estates Ltd | Real estate | 2021 |
| Majors Service Limited | Transport & logistics | 2003 |
| Makah Ltd | Wholesale & retail | 2025 |
| Makatine Limited | Real estate | 2022 |
| Makcarparts&Tools Ltd | Wholesale & retail | 2023 |
| Make Break Limited | Real estate | 2013 |
| Make Things Happen Removals Ltd | Water & waste | 2023 |
| Make Things Happen Suntrap Ltd | Wholesale & retail | 2022 |
| Make Things Happen Transport Ltd | Transport & logistics | 2023 |
| Makeyourdeals Ltd | Wholesale & retail | 2023 |
| Making YOU Beautiful Limited | Wholesale & retail | 2006 |
| Makline Ltd | Wholesale & retail | 2012 |
| Maks Hairstyles Limited | Other services | 2013 |
| MAL Leisure Limited | Agriculture & fishing | 2024 |
| Malabar Property Dealers Ltd | Real estate | 2021 |
| Malbiet Company Limited | Real estate | 2025 |
| Malcolm Legal Services Limited | Professional & scientific | 2000 |
| Malcolm Property Holdings Limited | Real estate | 2022 |
| Maldevi Holdings UK Ltd. | Real estate | 2018 |
| Malerkotla Logistics Limited | Transport & logistics | 2025 |
| Malhan Locum Services Ltd | Wholesale & retail | 2022 |
| Malhan Platform and Website Builds Ltd | Information & communication | 2023 |
| Malhi Buildtech Services Ltd | Construction | 2020 |
| Malhi Delivery & Couriers Ltd | Transport & logistics | 2025 |
| Malhi Transport Ltd | Transport & logistics | 2017 |
| Malhotras Kitchen Ltd | Hospitality | 2026 |
| Malik Butchers Ltd | Wholesale & retail | 2021 |
| Malik Butchers Stoke Ltd | Wholesale & retail | 2026 |
| Malik Ghaffar Ltd | Wholesale & retail | 2026 |
| Malik Hamza Ltd | Wholesale & retail | 2023 |
| Malik Wholesale Ltd | Wholesale & retail | 2026 |
| Maliks Financial Limited | Professional & scientific | 2016 |
| Malkeeyat Ltd | Wholesale & retail | 2025 |
| Malki Limited | Construction | 2024 |
| Mallan Labour Services Ltd | Administrative & support | 2025 |
| Mallo Joinery Limited | Construction | 2020 |
| Mallo Shopfitters Ltd | Construction | 2026 |