| 01 Shop Wave Ltd | Wholesale & retail | 2025 |
| 1874 Holdings Ltd | Professional & scientific | 2023 |
| 1STOP4AGP Ltd | Other services | 2020 |
| 3 Construction Services Ltd | Construction | 2021 |
| 3012AUTOMOBILE and Logistics Limited | Wholesale & retail | 2025 |
| 320 Ltd | Wholesale & retail | 2015 |
| 4T Transport Limited | Transport & logistics | 2022 |
| 72 MS Ltd | Administrative & support | 2026 |
| 999 HN Limited | Wholesale & retail | 2017 |
| A Bunch of Jessies Ltd | Arts & recreation | 2025 |
| A Team Plastering Ltd | Construction | 2024 |
| A&B Muck Movers Ltd | Transport & logistics | 2025 |
| A&B Property Rentals Ltd | Real estate | 2025 |
| A&S Distribution Limited | Wholesale & retail | 2026 |
| A.B. Specialist Hose Supplies Limited | Professional & scientific | 2002 |
| A.R.P. Plumbing & Heat Limited | Wholesale & retail | 2024 |
| AAA Retail Ltd | Wholesale & retail | 2018 |
| AB Associates (Lanarkshire) Ltd. | Financial services | 2015 |
| AB Properties (Lanarkshire) Ltd. | Real estate | 2015 |
| AB Systems Holding Ltd | Information & communication | 2018 |
| AB10 Consultancy Ltd | Manufacturing | 2011 |
| Abbas Property MGT Ltd | Real estate | 2024 |
| Abfab Holdings Ltd | Real estate | 2019 |
| Abmcourier Ltd | Transport & logistics | 2024 |
| Absolute Machine Tool Services Ltd. | Manufacturing | 2011 |
| Absolute Roasters Ltd | Manufacturing | 2019 |
| AC Land Regeneration Limited | Construction | 2021 |
| Access Mechanical Handling Limited | Manufacturing | 1986 |
| Acqua Utilities Media Ltd | Professional & scientific | 2025 |
| Action Roofing (Scotland) Ltd. | Construction | 2004 |
| Active Rentals Limited | Administrative & support | 2007 |
| AD Coast-It Ltd | Professional & scientific | 2025 |
| Adams Classic CUT Ltd | Other services | 2025 |
| ADL Lift Installations Limited | Extraterritorial | 2016 |
| ADL Lift Services Limited | Manufacturing | 2010 |
| Advance Construction (Scotland) Limited | Construction | 1999 |
| Advance Construction Group Limited | Administrative & support | 1999 |
| Advance Flooring Solutions Ltd | Construction | 2014 |
| Advance Freehold Ltd | Real estate | 2014 |
| Advance Grid Developments Ltd | Real estate | 2024 |
| Advance Grid Solutions Limited | Energy | 2022 |
| Advance Quarries Ltd | Mining & quarrying | 2011 |
| Advance Structures Limited | Construction | 2018 |
| Advance Training (Scotland) Limited | Construction | 2019 |
| Advance Utilities (Scotland) Ltd | Construction | 1995 |
| Advance Vehicle Rental Scotland Ltd | Administrative & support | 2014 |
| Advance Windpower Ltd | Manufacturing | 2013 |
| Aerial Access Services Limited | Manufacturing | 2007 |
| AF Sales Consultancy Ltd | Financial services | 2014 |
| Ag-Cakesandcatering Ltd | Hospitality | 2016 |
| AGD Bonnyton Ltd | Construction | 2025 |
| AGE Contracts Ltd | Construction | 2018 |
| Agile Endeavours Ltd | Professional & scientific | 2025 |
| AGL Coatings Ltd | Construction | 2025 |
| AGS Bellshill Ltd | Wholesale & retail | 2017 |
| AGS Covenhill Ltd | Energy | 2023 |
| AGS Harestonhill Ltd | Energy | 2023 |
| AGS Inverclyde Ltd | Energy | 2023 |
| AGS Langlands Gate Ltd | Energy | 2024 |
| AGS Meadowhead Ltd | Energy | 2023 |
| Ahnaai Barbers Limited | Other services | 2019 |
| AHR Housing Ltd | Real estate | 2024 |
| AIE Foods Ltd. | Hospitality | 2025 |
| Aina Enterprises Ltd | Wholesale & retail | 2023 |
| Air Source One Limited | Construction | 2010 |
| Airdrie Automatics Ltd. | Administrative & support | 2003 |
| AJ E-Com Ltd | Wholesale & retail | 2021 |
| AJR Healthcare Ltd | Wholesale & retail | 2023 |
| AK Samba Ltd | Real estate | 2025 |
| AK Services & Maintenance Ltd | Manufacturing | 2013 |
| Akor Properties Ltd | Real estate | 2023 |
| AL Mortgages Ltd. | Financial services | 2006 |
| AL Nour Properties Ltd | Real estate | 2023 |
| Al-Aziz Properties Limited | Administrative & support | 2005 |
| Alahmex Ltd | Wholesale & retail | 2022 |
| Alisha West Ltd | Hospitality | 2023 |
| ALL in House Home Improvements Ltd | Real estate | 2023 |
| Alliance Community Partnership Limited | Construction | 2012 |
| Allmech 24/7 Services Ltd | Manufacturing | 2026 |
| Almada Developments Ltd. | Real estate | 2002 |
| Almain Ltd | Construction | 2026 |
| Almet Electrical Limited | Construction | 2020 |
| Alphabet Village Limited | Health & social care | 2004 |
| Alphadil Group Ltd | Wholesale & retail | 2026 |
| Altec Properties Ltd | Real estate | 2026 |
| Ammonite Animation Ltd | Information & communication | 2021 |
| Amnas Hair & Beauty Salon Ltd | Other services | 2023 |
| Amplifive Music Ltd. | Arts & recreation | 2013 |
| AMS Electrical Services (Scotland) Ltd | Construction | 2015 |
| ANA R Foods Ltd | Hospitality | 2021 |
| Andersen Caledonia Limited | Health & social care | 1997 |
| Angus Design Associates Ltd. | Professional & scientific | 2005 |
| Anzz Ltd | Wholesale & retail | 2026 |
| AP Investments & Holdings Limited | Real estate | 2022 |
| Applegate Kitchens and Bathrooms Limited | Wholesale & retail | 2019 |
| AR Fast Food Ltd | Hospitality | 2023 |
| AR Party&Gift Limited | Wholesale & retail | 2024 |
| Arran Campbell | Health & social care | 2021 |
| Artisan Academy Ltd | Education | 2023 |
| Artisan Salon Ltd | Other services | 2023 |