| Megato Overseas LP | | 2015 |
| Megaza SP | | 2004 |
| Megralife LP | | 2017 |
| MEH Coffee Ltd | Hospitality | 2024 |
| Mehmet Bozkurt Ltd | Wholesale & retail | 2024 |
| Mehmood Compliance Ltd | Professional & scientific | 2026 |
| Mehwish Ltd | Wholesale & retail | 2022 |
| MEI HUA Catering Limited | Hospitality | 2011 |
| Meier Content Co. Limited | Professional & scientific | 2022 |
| Meif 5 Executives LP | | 2016 |
| Meif II Scotland L.P. | | 2006 |
| Meif III Scotland L.P. | | 2008 |
| Meif Scotland LP | | 2005 |
| Meifu Limited | Wholesale & retail | 2020 |
| Meikle Engineering Design Ltd. | Other services | 2005 |
| Meikleham Investment Trading (Scotland) Partnership SP | | 2022 |
| Meiklehope Ltd | Financial services | 2015 |
| Meiklewood LP | | 2012 |
| Mein Investment Trading (Scotland) Partnership SP | | 2022 |
| Mein Measurement Ltd | Administrative & support | 2023 |
| Meipan Ltd | Real estate | 2026 |
| Meireles & Harras Ltd | Health & social care | 2023 |
| Mekart Inter LP | | 2012 |
| Mekko Impex LP | | 2013 |
| Mekon AIS (Scotland) Limited | Information & communication | 2005 |
| MEL DE Bontemps LP | | 2022 |
| MEL Lawrie Coaching and Therapy Ltd | Health & social care | 2024 |
| MEL Sherwood Limited | Professional & scientific | 2016 |
| Mel's Marvels Limited | Wholesale & retail | 2018 |
| Mela Group LP | | 2017 |
| Melananta Sales LP | | 2015 |
| Melanie Notari LP | | 2022 |
| Melanson Media Limited | Information & communication | 2021 |
| Melanzo Ltd | Real estate | 2024 |
| Melathron Limited | Real estate | 2024 |
| Melco Restaurants Limited | Hospitality | 2018 |
| Meldon Holding LP | | 2017 |
| Meldrum Hospitality Ltd | Hospitality | 2023 |
| Melerche Limited | Administrative & support | 2006 |
| Meleyzer Alliance LP | | 2014 |
| Melf Trading LP | | 2017 |
| Melford CIP | | 2009 |
| Melford Developments Limited | Professional & scientific | 2000 |
| Melford Estates Limited | Real estate | 2004 |
| Melford II CIP (GP) Ltd | Administrative & support | 2013 |
| Melford II CIP LP | | 2013 |
| Melford Realty Investors 1 LP | | 2011 |
| Melford Realty Investors II LP | | 2013 |
| Melgar Business LP | | 2016 |
| Melgard Development LP | | 2014 |
| Melhouse Impex LP | | 2013 |
| Melia Corporation LP | | 2016 |
| Melissa Gordon Hair Ltd | Other services | 2023 |
| Melistra Sales LP | | 2013 |
| Melius Partners Ltd | Professional & scientific | 2026 |
| Mellan Investments LP | | 2015 |
| Mellanex LP | | 2014 |
| Mellaton LP | | 2014 |
| Mellentain LP | | 2014 |
| Mellif Trading LP | | 2018 |
| Mellis Cheese Limited | Wholesale & retail | 2011 |
| Mellis Holdings Ltd | Financial services | 2024 |
| Mellis Systems LP | | 2016 |
| Mellon Property Consultants Ltd | Professional & scientific | 2024 |
| Melmort Trade LP | | 2015 |
| Melo DA Silva LP | | 2013 |
| Melodia LP | | 2014 |
| Melody Dating App Limited | Information & communication | 2025 |
| Melody Loops LP | | 2016 |
| Meloni Group LP | | 2016 |
| Meloni Sales LP | | 2016 |
| Meloosha Homecare Limited | Professional & scientific | 2021 |
| Melrose Alliance L.P. | | 2010 |
| Melrose Candle Company Ltd | Manufacturing | 2024 |
| Melrose Commerce LP | | 2014 |
| Melrose Connect LP | | 2018 |
| Melrose Inc Limited | Real estate | 2026 |
| Melrose Labs Ltd | Information & communication | 2019 |
| Melrose Taxis Ltd. | Professional & scientific | 2009 |
| Melrose Villa Limited | Real estate | 2023 |
| Melrose World LP | | 2016 |
| Melrose-Drover Ltd | Wholesale & retail | 2024 |
| Melsen Group Ltd | Information & communication | 2026 |
| Melsom Trading LP | | 2014 |
| Melt Edinburgh Limited | Hospitality | 2023 |
| Melt Films Ltd | Information & communication | 2022 |
| Melt Kingdom Limited | Wholesale & retail | 2026 |
| Meltax PMC LP | | 2011 |
| Meltem Limited | Professional & scientific | 2024 |
| Melthem Trade LP | | 2013 |
| Meltmongers Limited | Hospitality | 2015 |
| Melville & Young Limited | Professional & scientific | 1988 |
| Melville Construction & Maintenance Limited | Construction | 2008 |
| Melville Consultancy Ltd | Professional & scientific | 2010 |
| Melville Consulting Partners Limited | Professional & scientific | 2019 |
| Melville Estates Ltd. | Other services | 2011 |
| Melville Group Limited | Professional & scientific | 2012 |
| Melville Independent PLC | Financial services | 2011 |
| Melville Investments Edinburgh Limited | Financial services | 2012 |
| Melville Paisley Investments | Other services | 2020 |