| Active Personnel HR Ltd | Professional & scientific | 2024 |
| Active Spirits Events Limited | Arts & recreation | 2026 |
| Active Therapy (Dumfries) Limited | Health & social care | 2023 |
| Active With NIC Limited | Arts & recreation | 2026 |
| Activeclobberuk Ltd | Wholesale & retail | 2026 |
| Activeline Ltd | Wholesale & retail | 2022 |
| Activscotland Ltd | Arts & recreation | 2016 |
| Acts Partnership (Services) Limited | Construction | 1998 |
| Acts Partnership Holdings Limited | Financial services | 2016 |
| Actsmarine Ltd | Manufacturing | 2021 |
| Actual Property Limited | Manufacturing | 2010 |
| Actuali Ltd | Financial services | 2022 |
| Actuality One Limited | Administrative & support | 2010 |
| ACU IT Solutions Limited | Information & communication | 2020 |
| Acu-Flow Limited | Manufacturing | 2019 |
| Acumen Cyber Ltd | Information & communication | 2023 |
| Acumen Financial Services Ltd | Financial services | 2022 |
| Acumen Tax Ltd | Professional & scientific | 2020 |
| Acumen Technology Group Ltd | Financial services | 2025 |
| Acupuncture Health Limited | Health & social care | 2025 |
| Acupure Limited | Health & social care | 2025 |
| Acura Corporation LP | | 2013 |
| Acura Occupational Health Ltd | Health & social care | 2020 |
| ACY Cars Limited | Wholesale & retail | 2026 |
| Acyna Ltd. | Information & communication | 2001 |
| AD (Glasgow) Ltd | Hospitality | 2020 |
| AD Advice Ltd | Professional & scientific | 2026 |
| AD Ahmad Company Limited | Wholesale & retail | 2025 |
| AD Boost Software Ltd | Information & communication | 2017 |
| AD Construction Service Ltd | Construction | 2018 |
| AD Geoservices Limited | Professional & scientific | 2022 |
| AD Hauliers Ltd | Transport & logistics | 2024 |
| AD HOC Advice Ltd | Education | 2021 |
| AD HOC IT Machinery LP | | 2012 |
| AD Jackton 2 Limited | Financial services | 2022 |
| AD Jackton 5 Limited | Financial services | 2022 |
| AD Jeffrey Investments Limited | Real estate | 2021 |
| AD Keys & Tuning Ltd | Wholesale & retail | 2025 |
| AD Nova Group Limited | Information & communication | 2019 |
| AD Oculos Ltd | Health & social care | 2023 |
| AD Pipefitting Services Limited | Construction | 2025 |
| AD Plus Accountants Ltd | Professional & scientific | 2018 |
| AD Plus Property Co. Ltd. | Professional & scientific | 2012 |
| AD Prime Group LP | | 2017 |
| AD Private Limited | Other services | 2018 |
| AD Sellers Ltd | Wholesale & retail | 2026 |
| AD Sound & Lighting Ltd | Administrative & support | 2022 |
| AD Two Plus Two Limited | Professional & scientific | 2018 |
| AD Victoriam Group Ltd | Real estate | 2019 |
| Ad-Darr Glasgow Ltd | Transport & logistics | 2026 |
| Ad-Veterprises Ltd | Professional & scientific | 2017 |
| AD1977 Limited | Wholesale & retail | 2016 |
| AD5 Fitness Limited | Arts & recreation | 2018 |
| ADA Tang Bishopbriggs Limited | Extraterritorial | 2011 |
| Adabrock Development Company Limited | Professional & scientific | 1997 |
| Adabrock Investments Limited | Financial services | 1996 |
| Adac Productions Ltd | Information & communication | 2022 |
| Adair Creative Limited | Professional & scientific | 2025 |
| Adaira Investment Management Ltd | Real estate | 2021 |
| Adaj Development Limited | Real estate | 2023 |
| Adaj Property Limited | Construction | 2024 |
| Adalar Enterprises LP | | 2017 |
| Adam & Ased Properties Ltd | Real estate | 2022 |
| Adam & Macewen Limited | Health & social care | 2005 |
| Adam & TIA Ltd | Wholesale & retail | 2023 |
| Adam 99 Limited | Hospitality | 2023 |
| Adam Ascent Limited | Transport & logistics | 2025 |
| Adam Bashir Investments Limited | Real estate | 2021 |
| Adam Cash & Carry Limited | Wholesale & retail | 2024 |
| Adam Charlotte Properties Ltd | Hospitality | 2023 |
| Adam Douglas LP | | 2015 |
| Adam Hart Healthcare Ltd. | Transport & logistics | 1997 |
| Adam Hemmings Structural Solutions Ltd | Professional & scientific | 2019 |
| Adam Hewitson Hair Ltd | Administrative & support | 2017 |
| Adam Management Services Limited | Professional & scientific | 2021 |
| Adam Mosa Ltd | Other services | 2016 |
| Adam Nails and Beauty Limited | Other services | 2020 |
| Adam Optical Ltd | Health & social care | 2016 |
| Adam Penketh Holdings Ltd | Wholesale & retail | 2024 |
| Adam Pepe Limited | Hospitality | 2025 |
| Adam Plastics Holdings Limited | Professional & scientific | 2015 |
| Adam Plastics Limited | Extraterritorial | 1998 |
| Adam PVT Ltd | Wholesale & retail | 2024 |
| Adam Roofing Services Glasgow Ltd | Construction | 2026 |
| Adam Smith School of Business and Management Limited | Extraterritorial | 2004 |
| Adam's Brew Ltd | Hospitality | 2025 |
| Adam's Company Investment Ltd | Real estate | 2026 |
| Adams Airdrie Ltd | Hospitality | 2018 |
| Adams and Duncan Limited | Other services | 2015 |
| Adams Eyecare (Scotland) Ltd | Health & social care | 2017 |
| Adams Fast Food Glasgow Ltd | Hospitality | 2026 |
| Adams Loft Ltd | Manufacturing | 2024 |
| Adams Property Glasgow Limited | Real estate | 2023 |
| Adams Quality Engineering Ltd | Professional & scientific | 2026 |
| Adamsohn Haus Ltd | Real estate | 2025 |
| Adamson Roofing (Scotland) Ltd | Construction | 2018 |
| Adamtec Ltd | Professional & scientific | 2023 |
| Adan Motors Ltd | Wholesale & retail | 2025 |
| Adana Barber Shop Ltd | Other services | 2025 |
| Adana Impex LP | | 2014 |