| MR M Mohamed and DR R J Magnall Ltd. | Health & social care | 2009 |
| MR Paul Cunningham Limited | Administrative & support | 2024 |
| MR SO Portobello Limited | Hospitality | 2011 |
| MR TED & Co Ltd | Real estate | 2003 |
| MR Twentytwo Limited | Real estate | 2018 |
| MR Wang Edinburgh Ltd | Hospitality | 2022 |
| MR Wolf Ltd | Wholesale & retail | 2004 |
| MR Wood's Fossils Limited | Wholesale & retail | 2007 |
| MR Wu's Limited | Hospitality | 2019 |
| MR YIP Catering Limited | Hospitality | 2004 |
| MR. Blue (208) Ltd | Wholesale & retail | 2026 |
| MR. Eion Limited | Manufacturing | 2013 |
| MR. Green (Portobello) Ltd | Wholesale & retail | 2026 |
| MR. Postman Ltd | Information & communication | 2022 |
| MR. Qahir Ltd | Wholesale & retail | 2024 |
| Mr.Oz Barber Shop Ltd | Other services | 2025 |
| Mramor Trade L.P. | | 2016 |
| MRB Design Ltd | Professional & scientific | 2024 |
| Mrdh Group LP | | 2018 |
| Mref III BG Limited Partnership | | 2013 |
| MRF I (GP) Limited | Real estate | 2015 |
| MRF I CIP (GP) Limited | Real estate | 2015 |
| MRF I CIP LP | | 2015 |
| MRF I Investors (GP) Limited | Real estate | 2015 |
| MRF I Investors LP | | 2015 |
| MRF I LP | | 2015 |
| Mrfa Limited | Administrative & support | 2015 |
| MRI 1 (GP) Ltd | Administrative & support | 2010 |
| MRI II (GP) Ltd | Administrative & support | 2013 |
| MRK Labs Ltd | Manufacturing | 2015 |
| Mrlk Properties Limited | Real estate | 2023 |
| MRM Care Ltd | Professional & scientific | 2023 |
| MRM Construction Solutions Ltd | Construction | 2025 |
| MRM Valuation & Advisory Ltd | Real estate | 2023 |
| Mroca Ltd | Health & social care | 2022 |
| MRR Sols Ltd | Information & communication | 2026 |
| MRS Unis Spicy Foods Limited | Manufacturing | 1997 |
| MRW Enterprises Limited | Information & communication | 2012 |
| MRZ Europe LP | | 2021 |
| MS Alba Pharma Engineering Ltd | Professional & scientific | 2018 |
| MS Block Limited | Real estate | 2019 |
| MS Buyback Ltd | Wholesale & retail | 2024 |
| MS Complex L.P. | | 2013 |
| MS Consulting Group LP | | 2015 |
| MS Convenience Stores Ltd | Wholesale & retail | 2024 |
| MS Crème DE LA Cream Ltd | Hospitality | 2022 |
| MS Hamid Limited | Real estate | 2019 |
| MS Home Lettings Limited | Real estate | 2025 |
| MS Info Services Ltd | Real estate | 2019 |
| MS Land 1 Limited | Real estate | 2023 |
| MS Land 2 Limited | Real estate | 2023 |
| MS Land 3 Limited | Real estate | 2023 |
| MS Land 4 Limited | Real estate | 2023 |
| MS Land 5 Limited | Real estate | 2023 |
| MS Land 6 Limited | Real estate | 2023 |
| MS Land 7 Limited | Real estate | 2023 |
| MS Land 8 Limited | Real estate | 2023 |
| MS Properties (Edinburgh) Limited | Real estate | 2016 |
| MS Properties Aberdeen Ltd | Real estate | 2022 |
| MS Vendings Limited | Wholesale & retail | 2025 |
| Ms-Help UK Ltd | Construction | 2024 |
| MS37 Holdings Limited | Other services | 2024 |
| MS37 Limited | Other services | 2024 |
| MSA Scotland Limited | Arts & recreation | 2014 |
| Msam Motors Ltd | Wholesale & retail | 2023 |
| Msbg Property Ltd | Construction | 2024 |
| MSC Invest LP | | 2013 |
| Mscek Limited | Health & social care | 2015 |
| Msci Scot 1 LP | | 2012 |
| Msci Scot 2 LP | | 2012 |
| Mscsr Ltd | Hospitality | 2020 |
| MSD Tech Solutions Ltd | Information & communication | 2021 |
| MSG Accountancy Ltd | Professional & scientific | 2022 |
| MSG Capital Ltd | Professional & scientific | 2021 |
| MSG Orthopaedics LLP | | 2016 |
| Mshnh Tech Ltd | Information & communication | 2025 |
| MSI Cafe Ltd | Hospitality | 2026 |
| Msitech Limited | Information & communication | 2010 |
| Msjw Healthcare Ltd | Health & social care | 2020 |
| MSK Innovations Ltd | Information & communication | 2026 |
| MSK World Ltd | Wholesale & retail | 2026 |
| MSM Private Hire Ltd | Transport & logistics | 2013 |
| MSM Special Partners (GP) LLP | | 2020 |
| MSM Special Partners LP | | 2020 |
| MSM Trustees Limited | Other services | 2021 |
| Mspg Limited | Real estate | 2020 |
| MSR Consult Ltd | Information & communication | 2026 |
| MSS Transport Edin Limited | Transport & logistics | 2025 |
| MST Commerce Ltd | Wholesale & retail | 2025 |
| MSY First Ltd | Transport & logistics | 2022 |
| MSZ Property Ltd | Real estate | 2006 |
| MT Bunkering LP | | 2013 |
| MT Cleaners Ltd | Agriculture & fishing | 2024 |
| MT Hollywood Entertainment Ltd | Arts & recreation | 2025 |
| MT Investment Management Ltd | Extraterritorial | 2012 |
| MT Property Group Limited | Real estate | 2024 |
| MT Truck MAN Ltd | Transport & logistics | 2021 |
| Mt&Mt Limited | Financial services | 2023 |
| MTB Culinary Ltd | Manufacturing | 2025 |
| MTC Consulting LP | | 2016 |