| MRG1161 Limited | Professional & scientific | 2019 |
| MRH Corporate Group Limited | Financial services | 2016 |
| MRH Corporate Limited | Professional & scientific | 2014 |
| MRH EOT Limited | Professional & scientific | 2019 |
| MRH Solicitors Limited | Professional & scientific | 2009 |
| Mrjp Consulting Limited | Information & communication | 2020 |
| Mrjt (Property) Limited | Real estate | 2024 |
| Mrjt Limited | Professional & scientific | 2012 |
| MRK Distribution Ltd | Wholesale & retail | 2023 |
| MRK Properties NW Ltd | Real estate | 2025 |
| MRM Properties & Investments Limited | Real estate | 2018 |
| Mron & Sun Limited | Real estate | 2020 |
| Mron Limited | Health & social care | 2014 |
| MRS Africa UK Ltd | Other services | 2019 |
| MRS Lowry and SON Limited | Arts & recreation | 2017 |
| MRS Purplicous Ltd | Wholesale & retail | 2024 |
| Mrsf Trading Limited | Hospitality | 2023 |
| MRT Motors Ltd | Wholesale & retail | 2026 |
| MRU Systems Ltd | Information & communication | 2006 |
| MS Corporate Properties Limited | Real estate | 2024 |
| MS Electrical Services NW Ltd | Construction | 2019 |
| MS Foodz Ltd | Hospitality | 2026 |
| MS Inns Ltd | Hospitality | 2017 |
| MS Investment Group Limited | Real estate | 2025 |
| MS Leaseholds Ltd | Real estate | 2015 |
| MS Lettings Limited | Real estate | 2024 |
| MS Logistics Bolton Ltd | Transport & logistics | 2025 |
| MS TEE Limited | Wholesale & retail | 2023 |
| MS Transport Logistics Ltd | Transport & logistics | 2025 |
| Ms&M Property Ltd | Real estate | 2017 |
| MS6 Lancs Limited | Wholesale & retail | 2025 |
| MSA Cuisine Ltd | Wholesale & retail | 2024 |
| MSA Online Ltd | Wholesale & retail | 2022 |
| Msad Limited | Real estate | 2022 |
| MSB Consult 21 Ltd | Wholesale & retail | 2024 |
| MSB Systems Support Limited | Information & communication | 2020 |
| Msbic Ltd | Information & communication | 2026 |
| MSD Consultancy NW Ltd | Professional & scientific | 2023 |
| MSD Expo Ltd | Wholesale & retail | 2025 |
| Msdl Investments Ltd | Financial services | 2021 |
| MSF Health Services Limited | Health & social care | 2022 |
| MSH Invest Limited | Real estate | 2020 |
| MSH Optical Limited | Health & social care | 2026 |
| MSI Commercial Properties Ltd | Construction | 2025 |
| MSI Finance Ltd | Financial services | 2021 |
| MSI Properties Ltd | Households | 2019 |
| MSJ Capital Ltd | Financial services | 2021 |
| MSK and Beyond Ltd | Health & social care | 2025 |
| MSK Clothing Limited | Wholesale & retail | 2018 |
| MSK Components Limited | Wholesale & retail | 2024 |
| Msk-Pa Ltd | Health & social care | 2023 |
| Mskol Limited | Professional & scientific | 2026 |
| Mslucy Investments Limited | Real estate | 2023 |
| MSM Elegant Landscaping Limited | Administrative & support | 2025 |
| MSM Emporium Ltd | Wholesale & retail | 2024 |
| MSM Properties (NW) Ltd | Real estate | 2026 |
| Msmb Transport Limited | Transport & logistics | 2020 |
| MSQ Accountant Limited | Wholesale & retail | 2024 |
| MSQ Deals Ltd | Wholesale & retail | 2023 |
| MSR Fast Food Ltd | Hospitality | 2020 |
| MSR Residential Ltd | Real estate | 2024 |
| Msrr Limited | Financial services | 2022 |
| Mssd Holdings Ltd | Real estate | 2025 |
| Mssl Property Investments Ltd | Real estate | 2026 |
| Mssv Distribution Ltd | Wholesale & retail | 2024 |
| MST Consult Ltd | Professional & scientific | 2023 |
| MST Ecological Ltd | Professional & scientific | 2022 |
| MSY Properties Ltd | Real estate | 2019 |
| Msyservicesuk Ltd | Wholesale & retail | 2021 |
| MT Associates Ltd | Professional & scientific | 2017 |
| MT Carpentry and Joinery Ltd | Construction | 2022 |
| MT Financial Services Limited | Financial services | 2002 |
| MT Inspections Ltd | Construction | 2026 |
| MT Joinery (North West) Limited | Construction | 2014 |
| MT TRADERS1 Ltd | Wholesale & retail | 2026 |
| MTA Radiology Ltd | Health & social care | 2025 |
| Mtan Affiliates Ltd | Other services | 2020 |
| MTB Brickwork Ltd | Construction | 2025 |
| Mtech Software Solutions Limited | Information & communication | 2018 |
| MTF (UK) Limited | Manufacturing | 2000 |
| MTI Investments Ltd | Real estate | 2021 |
| MTM Consulting Limited | Professional & scientific | 2021 |
| MTM Planning Ltd | Professional & scientific | 2023 |
| Mtod Limited | Information & communication | 2008 |
| MTP Construction Management Ltd | Professional & scientific | 2020 |
| MTP Recovery Limited | Transport & logistics | 2019 |
| MTR Investment Holdings Ltd | Real estate | 2026 |
| MTT Productions Limited | Administrative & support | 2022 |
| MTW Automotive Consultants Ltd | Professional & scientific | 2020 |
| MTW Property Development Ltd | Real estate | 2026 |
| MTY Legal Consultants Limited | Construction | 2022 |
| MU Transport Services Ltd | Transport & logistics | 2022 |
| MU2 Investment Limited | Professional & scientific | 2005 |
| MU2LEARNING Limited | Information & communication | 2012 |
| MUA Services Ltd | Wholesale & retail | 2022 |
| Muak Consultants Ltd | Information & communication | 2025 |
| Muappliances Limited | Wholesale & retail | 2023 |
| Mubbmedia Ltd | Information & communication | 2020 |
| Mubee Ltd | Construction | 2023 |
| Much Investments Limited | Transport & logistics | 2008 |