| MSD Contracts Ltd | Construction | 2023 |
| MSF Electrical Limited | Construction | 2017 |
| MSL Property Scotland Ltd | Real estate | 2025 |
| MSS Paisley Limited | Other services | 2020 |
| MSS Rentals Limited | Other services | 2020 |
| MT Facilities Ltd | Administrative & support | 2017 |
| MTD Accountancy & Advisory Ltd. | Professional & scientific | 2015 |
| MTS Ventures Limited | Construction | 2024 |
| Mtts Group Limited | Financial services | 2026 |
| MTW Project Services Ltd | Mining & quarrying | 2015 |
| Muir Property Development Ltd | Real estate | 2025 |
| Muirhall 1901 Limited | Energy | 2019 |
| Muirhall 1902 Limited | Energy | 2019 |
| Muirhall Blawearie Limited | Energy | 2015 |
| Muirhall Energy Limited | Professional & scientific | 2009 |
| Muirhall Energy Management Limited | Professional & scientific | 2017 |
| Muirhall Limited | Hospitality | 2003 |
| Muirhall Water Limited | Manufacturing | 2014 |
| Muirhall Windfarm Limited | Energy | 2004 |
| Muirhall WWS Energy Limited | Energy | 2024 |
| Muirhall WWS LLP | | 2013 |
| Muirhouse and Flemington Community Interest Company | Construction | 2021 |
| Muldoon Barbers Ltd | Other services | 2026 |
| Munro Property Letting Ltd | Real estate | 2025 |
| Murray Commercial Management Limited | Administrative & support | 2022 |
| Murray Glazing Ltd | Construction | 2026 |
| Murray Landscapes Limited | Administrative & support | 2018 |
| MUZ Management Ltd | Professional & scientific | 2021 |
| MV Tyres Group Limited | Financial services | 2026 |
| MV Tyres Ltd | Wholesale & retail | 2025 |
| MV Wholesale(Scotland) Ltd | Wholesale & retail | 2026 |
| MW Autotec Limited | Professional & scientific | 2025 |
| MWB Homes Ltd | Real estate | 2022 |
| My Best Mate Painter and Decorator Limited | Construction | 2026 |
| My Pretty Laundrette Ltd | Wholesale & retail | 2025 |
| My Red Circle Ltd | Wholesale & retail | 2019 |
| My Roofcare Limited | Construction | 2017 |
| My-Rent Ltd | Real estate | 2012 |
| MZ 007 Ltd | Wholesale & retail | 2026 |
| MZH Logistics Ltd | Other services | 2025 |
| MZS 20 Limited | Hospitality | 2020 |
| Mzwe 20 Limited | Hospitality | 2020 |
| N Kealy Engineering Ltd | Construction | 2026 |
| NA & BA Properties Ltd | Real estate | 2026 |
| NA Bookkeeping Services Ltd | Professional & scientific | 2014 |
| Nailen Landscapes Ltd. | Administrative & support | 2022 |
| Nailen Specialist Joiners Ltd. | Construction | 2022 |
| Nalatec Holdings Ltd | Financial services | 2021 |
| NAM Safety Ltd | Professional & scientific | 2025 |
| Nama Apparel Ltd | Wholesale & retail | 2022 |
| Nama Capital UK Limited | Professional & scientific | 2018 |
| Nancy & IVY Ltd | Real estate | 2018 |
| Nardini Group Ltd | Wholesale & retail | 2014 |
| Nasir Group Ltd | Wholesale & retail | 2024 |
| NAT GAS Care Limited | Professional & scientific | 2010 |
| Natabrainhomes Ltd | Real estate | 2022 |
| Natta Ltd | Wholesale & retail | 2022 |
| NB9030 Limited | Real estate | 2024 |
| NBM Engineering & Construction Ltd | Professional & scientific | 2024 |
| NCL Property Lettings Ltd | Real estate | 2024 |
| NCM Electrical Solutions Limited | Energy | 2021 |
| ND Graphics Ltd | Professional & scientific | 2020 |
| ND Tanning Ltd | Other services | 2026 |
| Neil Stewart Sales Consultancy Limited | Wholesale & retail | 2018 |
| Nelson Joinery Scotland Ltd | Manufacturing | 2025 |
| Nemec Limited | Wholesale & retail | 2010 |
| Nemo Trading AS Scotia Bathrooms Ltd | Manufacturing | 2022 |
| Neom Developments Limited | Real estate | 2023 |
| Nestec Holdings Ltd | Financial services | 2025 |
| Nestec Limited | Professional & scientific | 2023 |
| Netherton Inspection Services Ltd | Professional & scientific | 2018 |
| Neuroclnx Holdings Limited | Financial services | 2020 |
| Neuroclnx Limited | Health & social care | 2003 |
| Nevis Healthcare Ltd | Wholesale & retail | 2011 |
| New AGE Roofing Ltd | Construction | 2020 |
| New Broad Street Business Sales Ltd | Administrative & support | 2022 |
| New Day Propertys Ltd | Real estate | 2022 |
| New LC Trading Co Ltd | Wholesale & retail | 2026 |
| New Lives New Landscapes (Murieston) Limited | Agriculture & fishing | 1996 |
| New Lives New Landscapes (West Harwood) Limited | Real estate | 1993 |
| New Premier (Scot) Ltd | Wholesale & retail | 2017 |
| New Town Skip Hire Limited | Administrative & support | 2013 |
| New Town Waste Solutions Limited | Water & waste | 2013 |
| Newartgrill Ltd | Hospitality | 2026 |
| Newarthill Catering Company Ltd | Hospitality | 2025 |
| Newarthill PUB Enterprises Limited | Hospitality | 2020 |
| Newhouse Investments Ltd. | Real estate | 2004 |
| Newlay Civil Engineering Ltd | Construction | 2012 |
| Newtown Demolition Limited | Construction | 2019 |
| Next Generation (USA) Limited | Education | 2020 |
| Nibble Away Co Ltd | Wholesale & retail | 2025 |
| Nicki's Motorhome Hire Limited | Other services | 2021 |
| Niletech Ltd | Information & communication | 2023 |
| Nimmo Ventures Limited | Manufacturing | 2022 |
| Nippy Tung Limited | Hospitality | 2014 |
| Nishan Engineers UK Ltd | Construction | 2020 |
| Nizbox Ltd | Transport & logistics | 2025 |
| NK Carpets Ltd | Wholesale & retail | 2012 |
| NL Property Investments Limited | Real estate | 2012 |
| Nl-Qhse Limited | Professional & scientific | 2025 |