| Lemontree Portfolio Ltd | Real estate | 2025 |
| Lethington Leisure Limited | Arts & recreation | 2005 |
| Liam's Barbers Limited | Other services | 2008 |
| Life IS NOT Limited | Administrative & support | 2015 |
| LIFESTYLEMAX45 Ltd | Wholesale & retail | 2019 |
| Limena Labs Ltd | Information & communication | 2026 |
| Linkvale Limited | Professional & scientific | 2003 |
| Liqeni VII Limited | Construction | 2023 |
| Liskmorn Properties Ltd | Real estate | 2018 |
| Little Flowers Limited | Education | 2005 |
| Little Flowers Properties Limited | Households | 2024 |
| Livingstone ROY Associates Ltd | Professional & scientific | 2024 |
| LJL Planning Services Ltd | Manufacturing | 2015 |
| Local Business Rescue Ltd | Administrative & support | 2019 |
| Logic Energy Ltd | Information & communication | 2007 |
| Lomond Energy Ltd. | Professional & scientific | 2003 |
| LOMOND12 Projects Ltd | Real estate | 2025 |
| LW Sash & Case Windows Ltd | Construction | 2020 |
| Lyberate Group Ltd | Professional & scientific | 2026 |
| Lynkeos Technology Limited | Professional & scientific | 2016 |
| M & U Motor Factors Limited | Wholesale & retail | 2024 |
| M C F Electrical Limited | Construction | 2003 |
| M E Gate Limited | Education | 2025 |
| M.C.G Propertys (Scotland) Limited | Real estate | 2026 |
| M2C Consulting Ltd | Information & communication | 2023 |
| M2H Properties Ltd | Real estate | 2025 |
| M3BALLERS Ltd | Education | 2020 |
| M8 Transport & Logistics Limited | Transport & logistics | 2025 |
| Machina Management Limited | Professional & scientific | 2019 |
| Macniven Homes Ltd | Real estate | 2026 |
| MAE Maes Baby Boutique Ltd | Wholesale & retail | 2025 |
| Magnacom Limited | Information & communication | 1997 |
| Main Decorators Ltd | Construction | 2024 |
| Mains Cleaning Service Ltd | Administrative & support | 2013 |
| Maison LUX Interiors Limited | Manufacturing | 2021 |
| Malcolm Campbell, Limited | Real estate | 1899 |
| Malcolm Insulation Supplies Limited | Construction | 1984 |
| Mallcrop International Ltd | Wholesale & retail | 2018 |
| Mancini Jewellery Limited | Wholesale & retail | 2012 |
| Mandie Mccutcheon Holdings Limited | Professional & scientific | 2018 |
| Marann Holdings Limited | Financial services | 2014 |
| Marble Property Services (Scotland) Ltd | Real estate | 2014 |
| Marcy Contracts Ltd | Construction | 2016 |
| Marinedunnon Limited | Hospitality | 2023 |
| Marlowe Developments Ltd | Construction | 2017 |
| Marshall Brown Architectural Systems Limited | Construction | 2006 |
| Marsten Ltd | Hospitality | 2026 |
| Masterplan Business Solutions Ltd | Professional & scientific | 2015 |
| Matthew Sutherland Joinery Ltd | Construction | 2025 |
| MAY Apartments Limited | Hospitality | 2017 |
| MC Ferguson Civil Engineering Ltd. | Professional & scientific | 2015 |
| Mccann Media Limited | Information & communication | 2009 |
| Mccreight Electrical Contractors Ltd | Energy | 2023 |
| Mcdougall Property Limited | Real estate | 2020 |
| Mcgregor Property Maintenance Ltd. | Construction | 2016 |
| Mcgroggan Joinery Ltd | Manufacturing | 2025 |
| Mcja Properties Limited | Real estate | 2025 |
| Mckie Group Ltd | Wholesale & retail | 2021 |
| MCL Environmental Limited | Water & waste | 2024 |
| Mcneil Wealth Consultants Limited | Financial services | 2016 |
| MDM Properties Scotland Ltd | Real estate | 2024 |
| MDM Property Portfolio Ltd | Real estate | 2025 |
| Meadowside Marine Ltd. | Manufacturing | 2002 |
| Meadowview Windows Limited | Manufacturing | 1992 |
| Megarme UK Ltd | Mining & quarrying | 2019 |
| Mehilla Ltd | Transport & logistics | 2022 |
| Melrose AVE Films Ltd | Information & communication | 2023 |
| Melrose Avenue Stores Ltd | Wholesale & retail | 2023 |
| Menteith Trading Limited | Professional & scientific | 2012 |
| Mera Peak Ltd | Real estate | 2019 |
| Merces Oakmont Group Ltd | Wholesale & retail | 2025 |
| Metallo Limited | Manufacturing | 2008 |
| Metronics Recycling Ltd | Wholesale & retail | 2020 |
| MG Ghumman Ltd | Information & communication | 2025 |
| MGM Construction & Energy Management Limited | Construction | 2019 |
| MGS Salt Ltd | Construction | 2013 |
| MHA Auchlochan | Health & social care | 2008 |
| Micmac T/A Western Bar Ltd. | Hospitality | 2019 |
| Midton Consulting Ltd | Professional & scientific | 2023 |
| Mill & Molar Limited | Health & social care | 2025 |
| Milltrout Limited | Real estate | 2000 |
| Mindful Mentors Ltd | Education | 2023 |
| Mindgenius Ltd. | Information & communication | 2006 |
| Minteed Ltd | Hospitality | 2025 |
| Mister Wash Ltd | Other services | 2019 |
| MJ Ventilation Limited | Manufacturing | 2006 |
| Mjmartuk Ltd | Wholesale & retail | 2023 |
| MK Property Asset Ltd | Real estate | 2022 |
| Mlcc Access Limited | Construction | 2024 |
| Mlcm Ltd | Professional & scientific | 2025 |
| Mmlm Limited | Wholesale & retail | 2017 |
| Mobeau Ltd | Other services | 2021 |
| Modemkiller Ltd | Information & communication | 2025 |
| Modular Walling Systems Holdings Ltd | Manufacturing | 2011 |
| Modular Walling Systems Ltd | Manufacturing | 2020 |
| Momags Kids Club Limited | Health & social care | 2001 |
| Monteith Power Distribution Ltd | Construction | 2024 |
| Moochie Limited | Other services | 2025 |
| MOR3 Ltd | Other services | 2025 |
| Moray Dental Services Limited | Health & social care | 2014 |