| Albion Capital Management LP | | 2014 |
| Albion Holding LP | | 2015 |
| Albion Recycling & Environmental Management Limited | Professional & scientific | 2005 |
| Albion Software Ltd | Information & communication | 2023 |
| Albion Way Auto Services Ltd | Wholesale & retail | 2025 |
| Albiz Properties Ltd | Real estate | 2025 |
| Album Parrot Ltd | Information & communication | 2016 |
| Alburne Limited | Real estate | 2021 |
| Albus Accounting Limited | Professional & scientific | 2011 |
| Albyn Associates Financial Solutions Ltd | Professional & scientific | 2021 |
| Albyn Shop Investments Limited | Professional & scientific | 1972 |
| Alcan Contracts Ltd | Construction | 2025 |
| Alchemist Commercial Property Fund Limited Partnership | | 2009 |
| Alchemist Wellness Clinic Ltd | Health & social care | 2026 |
| Alchemy Clinic EK Ltd | Health & social care | 2021 |
| Alchemy Coatbridge Ltd | Hospitality | 2019 |
| Alchemy Developments (Scot) Ltd. | Other services | 2018 |
| Alchemy Drinks Ltd. | Wholesale & retail | 2014 |
| Alchemy Drinks Wholesale Ltd | Wholesale & retail | 2020 |
| Alchemy Hair and Aesthetics Limited | Other services | 2014 |
| Alchemy Health and Wellness Ltd | Health & social care | 2024 |
| Alchemy Inns Limited | Wholesale & retail | 2001 |
| Alchemy Investments (Scotland) Ltd. | Real estate | 2019 |
| Alchemy Weight Loss Service Limited | Health & social care | 2025 |
| Alcohol Uncensored Community Ltd | Health & social care | 2025 |
| Alcuma Limited | Construction | 2020 |
| ALD (Health & Safety) Limited | Construction | 2017 |
| ALD Consulting Ltd | Professional & scientific | 2026 |
| Aldahar Ltd | Manufacturing | 2025 |
| Aldea Bella (NO 36) Limited | Professional & scientific | 1984 |
| Aldea Bella (NO.5) Limited | Other services | 1989 |
| Aldea Bella (Number 215) Limited | Extraterritorial | 1984 |
| Alderbrae Property Lets Limited | Real estate | 2018 |
| Alderbright Ltd | Professional & scientific | 2023 |
| Alderlea House Ltd | Hospitality | 2012 |
| Alderman Services Ltd | Professional & scientific | 2019 |
| Aldmont Consulting Limited | Professional & scientific | 2014 |
| Aldo Scotland Ltd | Transport & logistics | 2024 |
| Aldomak Limited | Manufacturing | 1974 |
| Aldomann Limited | Wholesale & retail | 2009 |
| Aldon 1 Limited | Transport & logistics | 2026 |
| Aldon 2 Limited | Transport & logistics | 2026 |
| Aldon 7 Limited | Transport & logistics | 2023 |
| Aldon 8 Limited | Transport & logistics | 2023 |
| Alea Car Sales Ltd | Wholesale & retail | 2025 |
| Aleandro Ltd | Hospitality | 2023 |
| Alector Ltd. | Manufacturing | 1999 |
| Alee Properties Ltd | Real estate | 2019 |
| Aleen Hairstyle Ltd | Other services | 2025 |
| Aleesh Digital Ltd | Wholesale & retail | 2016 |
| Aleezliaqat Ltd | Manufacturing | 2026 |
| Alef Shipping L.P. | | 2011 |
| Alegrant Ltd | Professional & scientific | 2016 |
| Alegria Entertainment Ltd | Arts & recreation | 2025 |
| Aleksandar Kantarev Ltd | Transport & logistics | 2025 |
| Alemany Trade LP | | 2015 |
| Alemar Property Ltd | Real estate | 2023 |
| Alemar Shipping Consultancy Ltd | Manufacturing | 2025 |
| Alemark Holdings Limited | Wholesale & retail | 2022 |
| Alembic Research Limited | Professional & scientific | 2005 |
| Alepar Ltd | Wholesale & retail | 2024 |
| Alert 24 Hour Plumbing Ltd. | Professional & scientific | 2008 |
| Alesia Property Ltd | Real estate | 2022 |
| Alessia Finance Ltd | Information & communication | 2025 |
| Alex Allan Motor Engineers Ltd | Manufacturing | 2022 |
| Alex Bruce Roofing Ltd | Construction | 2016 |
| Alex Campbell Haulage Limited | Transport & logistics | 2007 |
| Alex Ferguson Building Limited | Construction | 2012 |
| Alex Hunter Limited | Information & communication | 2020 |
| Alex Instructor Ltd | Education | 2023 |
| Alex Lafferty Ltd | Professional & scientific | 2012 |
| Alex Marshall Financial Consultancy Limited | Professional & scientific | 2018 |
| Alex Matheson Electrical Ltd | Construction | 2022 |
| Alex Pollock Ltd. | Information & communication | 1994 |
| Alex Robertson Construction Services Ltd | Construction | 2015 |
| Alex S Mair (Holdings) Limited | Financial services | 2024 |
| Alex S Mair Limited | Wholesale & retail | 1978 |
| Alex the Celebrant Limited | Other services | 2022 |
| Alex Tulloch Joiners Ltd. | Construction | 2003 |
| Alex.Innes.Valetanddetailing Limited | Administrative & support | 2020 |
| Alexa Lounge Limited | Wholesale & retail | 2025 |
| Alexander Account Relations Ltd | Professional & scientific | 2023 |
| Alexander Anderson Limited | Real estate | 1963 |
| Alexander Bell Limited | Administrative & support | 2008 |
| Alexander Blinds & Furniture Ltd | Manufacturing | 2010 |
| Alexander Building Services Limited | Construction | 2018 |
| Alexander Bulloch and Company Limited | Professional & scientific | 2016 |
| Alexander Castle Limited | Wholesale & retail | 2015 |
| Alexander Chase Capital Ltd | Construction | 2020 |
| Alexander Dale Limited | Other services | 2014 |
| Alexander David & Co (Scotland) Ltd | Real estate | 2020 |
| Alexander GAS Heating Ltd | Construction | 2011 |
| Alexander GUY World Enterprises Ltd | Arts & recreation | 2024 |
| Alexander Hart Properties Limited | Administrative & support | 2001 |
| Alexander Hayden Property Ltd | Real estate | 2024 |
| Alexander Holt Limited | Professional & scientific | 2016 |
| Alexander Homes (Scotland) Ltd | Construction | 2016 |
| Alexander Jeffrey & Company Limited | Wholesale & retail | 1982 |
| Alexander Linn Ltd | Manufacturing | 2021 |
| Alexander Logan Limited | Construction | 2022 |