| MR Singh Curry Ltd | Hospitality | 2023 |
| MR Whimpy Creams Limited | Wholesale & retail | 2022 |
| Mr&Trsolutions Ltd | Information & communication | 2022 |
| MR. Pizza International Ltd | Wholesale & retail | 2025 |
| MRC Building Projects Ltd | Construction | 2024 |
| MRD International Ltd | Real estate | 2005 |
| MRE Property Ltd | Real estate | 2015 |
| MRF Services Ltd | Other services | 2021 |
| MRH Electrical Services Limited | Construction | 2012 |
| MRH Investments Ltd | Health & social care | 2014 |
| MRH Prestige Limited | Administrative & support | 2020 |
| MRH Property Group Ltd | Real estate | 2019 |
| MRM Sitepro Ltd | Construction | 2024 |
| MRP Building Ltd | Construction | 2023 |
| MRS Group Ltd | Information & communication | 2022 |
| MRV Team Ltd | Wholesale & retail | 2013 |
| MRV Tools&Equipments Ltd | Wholesale & retail | 2019 |
| MS & Properties Ltd | Real estate | 2025 |
| MS 5* Cleaning Services Ltd | Administrative & support | 2017 |
| MS Action Limited | Health & social care | 1989 |
| MS Atlay Ltd | Wholesale & retail | 2026 |
| MS Building Limited | Construction | 2024 |
| MS Buying and Selling Ltd | Wholesale & retail | 2024 |
| MS Ceilings & Partitions Limited | Construction | 2006 |
| MS Estate Holdings Ltd | Real estate | 2023 |
| MS Holdings International Ltd | Hospitality | 2025 |
| MS Medicolegal Ltd | Health & social care | 2025 |
| MS Plumbing Ltd | Construction | 2019 |
| MS Rehman Traders Limited | Other services | 2024 |
| MS Sons Limited | Real estate | 2024 |
| Msait Ltd | Professional & scientific | 2026 |
| Msarkar Ltd | Health & social care | 2013 |
| MSB Aesthetic Ltd | Health & social care | 2025 |
| MSC Electrical & Services Ltd | Construction | 2026 |
| Mscozykitchen Cakes & Bakes Ltd | Wholesale & retail | 2023 |
| MSH Hold Ltd | Financial services | 2026 |
| MSH UK Properties Ltd | Construction | 2015 |
| MSI Management Consultancy Ltd | Professional & scientific | 2022 |
| Msisignatureevents Ltd | Hospitality | 2025 |
| MSJ Pharma Ltd | Health & social care | 2023 |
| MSK Properties Investment Ltd | Real estate | 2023 |
| MSK050 Limited | Extraterritorial | 2010 |
| MSL Investment Limited | Hospitality | 2016 |
| MSL Logistics Ltd | Transport & logistics | 2021 |
| Msma Mosaic Investments Ltd | Real estate | 2024 |
| Mstyle UK Ebay Limited | Wholesale & retail | 2025 |
| Mstyle UK Ltd | Wholesale & retail | 2009 |
| Msuccess Education Ltd | Hospitality | 2026 |
| MT Glazing Services Ltd | Construction | 2023 |
| MT Prime Commerce Ltd | Wholesale & retail | 2026 |
| MT Technology Ltd | Information & communication | 2023 |
| MT Temporary & Interim Staffing Ltd | Administrative & support | 2023 |
| Mt-Con Ltd | Professional & scientific | 2024 |
| MTD Group of Companies Limited | Extraterritorial | 2011 |
| Mtech Motors Limited | Wholesale & retail | 2025 |
| MTG Financial Limited | Information & communication | 2010 |
| MTI Mechanical Services Limited | Construction | 2019 |
| Mtis Techno Ltd | Wholesale & retail | 2025 |
| MTM Eco Builders Ltd | Construction | 2026 |
| Mtmj Ltd | Information & communication | 2013 |
| MTN Fixers Ltd | Construction | 2020 |
| MTR Motors Ltd | Wholesale & retail | 2017 |
| Mtroptom Ltd | Administrative & support | 2016 |
| MTT Buildings Ltd | Construction | 2023 |
| MTX Limited | Construction | 2015 |
| MU Developments Limited | Real estate | 2016 |
| MU3 Limited | Real estate | 2022 |
| Muahammad KRD Ltd | Wholesale & retail | 2026 |
| Muazio Ltd | Wholesale & retail | 2025 |
| Mude Holdings Limited | Financial services | 2024 |
| Mudidi Limited | Real estate | 2022 |
| Mughal Investments Limited | Real estate | 2020 |
| Mughal Properties London Limited | Real estate | 2020 |
| Mughal Sign & Print Ltd | Manufacturing | 2021 |
| Mugo Estates Ltd | Real estate | 2025 |
| Muhamad ALI Ltd | Wholesale & retail | 2025 |
| Muhammad Tariq Soomro Ltd | Professional & scientific | 2020 |
| Muhammad Umair Iftikhar Ltd | Wholesale & retail | 2025 |
| Muhammod Kamal Hussen Ltd | Wholesale & retail | 2025 |
| Muja Contractors Ltd | Construction | 2021 |
| Muja Store Ltd | Wholesale & retail | 2023 |
| Mujer Corp Ltd | Wholesale & retail | 2018 |
| Mujer Ltd | Wholesale & retail | 2017 |
| Mujtaba Analytics Ltd | Information & communication | 2026 |
| Mukse Ltd | Administrative & support | 2019 |
| Mukto Arts CIC | Arts & recreation | 2019 |
| Mula Property Ltd | Real estate | 2024 |
| Mullabros Limited | Construction | 2020 |
| Mullasons Limited | Hospitality | 2024 |
| Mullen Capital Limited | Financial services | 2024 |
| Mullen Property Developments Limited | Construction | 2020 |
| Mullen Property Holdings Limited | Financial services | 2020 |
| Mullen Property Services Ltd | Construction | 2016 |
| Mullion Marketing Limited | Information & communication | 2018 |
| Mullis & Peake LLP | | 2008 |
| Multi Contracting Services Ltd. | Administrative & support | 2015 |
| Multi Located Help Centre UK | Other services | 2018 |
| Multipatcher (UK) Limited | Wholesale & retail | 2022 |
| Multiyork Building Services Ltd | Construction | 2013 |
| Multiyork Developments Ltd | Construction | 2015 |