| 'A' Flight Aviation Limited | Administrative & support | 1995 |
| 10 Design Ltd. | Professional & scientific | 2010 |
| 222 Property Management Ltd | Real estate | 2024 |
| 24HEAVEN Coffee Ltd. | Wholesale & retail | 2021 |
| 308 Contracts Ltd | Construction | 2025 |
| 3D Made Easy Ltd. | Education | 2010 |
| 4 Inn 1 Ltd | Hospitality | 2024 |
| 4 the Love of Dog Glasgow Ltd | Agriculture & fishing | 2024 |
| 6 Bells Events Limited | Hospitality | 2019 |
| 918 Limited | Real estate | 2016 |
| A Brady Properties Ltd | Real estate | 2022 |
| A Class Windows & Doors Scotland Limited | Construction | 2025 |
| A Crafty Affair Ltd | Wholesale & retail | 2015 |
| A D Gillespie Limited | Construction | 2016 |
| A for Audi Holdings Limited | Wholesale & retail | 2018 |
| A for Audi Limited | Wholesale & retail | 2008 |
| A T S Retail Ltd | Wholesale & retail | 2022 |
| A&A Scotland Ltd | Wholesale & retail | 2024 |
| A&K Body Repairs Ltd | Wholesale & retail | 2021 |
| A&R Autos Ltd | Wholesale & retail | 2020 |
| A.J.M Contractors Limited | Construction | 2007 |
| A.L.S. (Scotland) Ltd | Manufacturing | 2017 |
| A.Roberts Decorators Limited | Construction | 2018 |
| AA Civilwork Ltd | Construction | 2019 |
| Aaira Moeen Ltd | Hospitality | 2023 |
| AB Joinery & Building Service Ltd | Construction | 2017 |
| ABA Services (Accurate Books and Accounts) | Professional & scientific | 2016 |
| Above & Beyond Projects Ltd | Construction | 2026 |
| Absolute Wasters Ltd | Water & waste | 2024 |
| ABZ Exports Ltd | Wholesale & retail | 2025 |
| Accept Leisure Ltd | Health & social care | 2021 |
| Acci-Dent Body Shop Ltd | Wholesale & retail | 2018 |
| Ace & Luster Limited | Wholesale & retail | 2020 |
| Ace Food Group Ltd | Professional & scientific | 2026 |
| Acer Spades Garden Services Ltd | Administrative & support | 2019 |
| Acreloch Limited | Real estate | 2003 |
| Acsafe Ltd | Administrative & support | 2023 |
| Adam Coyle Ltd | Manufacturing | 2019 |
| ADC Investments Limited | Real estate | 2020 |
| Addison Fencing Limited | Construction | 2026 |
| Adelante Joinery Limited | Manufacturing | 2023 |
| ADG Plumbing & GAS Ltd | Construction | 2019 |
| Adjoinery Home Improvements Ltd | Manufacturing | 2021 |
| Adriano's Fast Foods Ltd | Hospitality | 2024 |
| Advanced Speech Solutions Limited | Information & communication | 2015 |
| AE Bidco Ltd | Financial services | 2026 |
| AED Consultant Services Ltd | Professional & scientific | 2020 |
| Aegean Tiling Limited | Construction | 2022 |
| Aesthetics by AMY ANP Ltd | Other services | 2022 |
| Afaa Services Limited | Wholesale & retail | 2023 |
| AGL Electrical Engineering Ltd | Professional & scientific | 2025 |
| Ahmedicine Ltd | Health & social care | 2026 |
| Aidan Vincent Delivery Ltd | Transport & logistics | 2026 |
| Aitchison Blair, Limited | | 1909 |
| Aivine Kelstique C.I.C. | Education | 2025 |
| AJ Joiners Limited | Construction | 2024 |
| AJ Joinery and Shopfitting Ltd | Construction | 2025 |
| AJG Consultancy Scotland Limited | Professional & scientific | 2024 |
| AJK Landscapes Ltd | Administrative & support | 2021 |
| Ak&M Traders Ltd | Wholesale & retail | 2024 |
| AKL Construction (Scot) Ltd | Construction | 2023 |
| Alan Boles Consulting Ltd | Real estate | 2015 |
| Alexander Anderson Scotland Ltd | Construction | 2018 |
| ALG Direct Marketing Ltd | Other services | 2015 |
| ALL Access Training Services Ltd | Education | 2017 |
| ALL Perfect Food Ltd | Hospitality | 2023 |
| Allana's Hairdressing Limited | Other services | 2022 |
| Alltogether Care Services Ltd | Other services | 2004 |
| Alltots Ltd. | Education | 2008 |
| Allure Bathroom & Kitchens Limited | Wholesale & retail | 2025 |
| Allure Property Sales Ltd | Real estate | 2025 |
| ALN Kurd Ltd | Wholesale & retail | 2022 |
| Alpha Facilities and Services Ltd | Administrative & support | 2025 |
| Alpha M&E Scotland Ltd | Construction | 2020 |
| Alpha Pet Services Ltd. | Other services | 2008 |
| Alpha PSS Ltd | Construction | 2021 |
| ALR Controls Ltd | Manufacturing | 2022 |
| Altus Innovations Ltd. | Professional & scientific | 2003 |
| Amber Hall Coaching Ltd | Administrative & support | 2025 |
| Amcg Electric Ltd | Construction | 2026 |
| AMK Finance Ltd | Administrative & support | 2015 |
| Amplify Customer Solutions Ltd | Information & communication | 2022 |
| AMV Scotland Limited | Professional & scientific | 2003 |
| Anderson Abodes Ltd | Real estate | 2023 |
| Anderson Mathew Estate Planning Limited | Financial services | 2020 |
| Anderson Property Investments Ltd | Real estate | 2023 |
| Andres Inspection Ltd | Administrative & support | 2014 |
| Andrew Bush Audio Ltd | Information & communication | 2023 |
| Andrew Installation and Inspection Services Ltd | Construction | 2024 |
| Andrew Mcquade Property Ltd | Real estate | 2024 |
| Anns Cafe Ltd | Wholesale & retail | 2017 |
| ANTIQUESHOP24 Ltd | Wholesale & retail | 2025 |
| Antonine Roofing and Chimney Specialists Limited | Construction | 2018 |
| AP Holdings Scotland Limited | Other services | 2021 |
| Apollo Creed Limited | Information & communication | 2017 |
| Appin House Limited | Hospitality | 2014 |
| April's Street Feet CIC | Arts & recreation | 2019 |
| Archie Holdings Ltd | Administrative & support | 2024 |
| Architectural Facades Maintenance & Repairs Ltd | Construction | 2011 |
| Arewa's Label Limited | Manufacturing | 2026 |