| Airport Transfers Scotland Ltd | Administrative & support | 2018 |
| Airports Centre of Excellence Limited | Professional & scientific | 2017 |
| Airsoft League Ltd | Arts & recreation | 2025 |
| Airspection Limited | Professional & scientific | 2022 |
| Airstream Matrix LP | | 2019 |
| Airtec International Limited | Wholesale & retail | 1991 |
| Airtech Sales L.P. | | 2016 |
| Airth Pharmacy Ltd | Wholesale & retail | 2017 |
| Airth Welfare Hall Limited | Hospitality | 2011 |
| Airus Properties Ltd | Real estate | 2020 |
| Airwalk Consulting Reply Ltd | Information & communication | 2013 |
| Airways Travel & Tours Ltd | Administrative & support | 2011 |
| AIS Retail Ltd. | Wholesale & retail | 2024 |
| AIS Traders Limited | Wholesale & retail | 2021 |
| Aisha Hair & Beauty Limited | Other services | 2019 |
| Aisha J Limited | Administrative & support | 2016 |
| Aisha Khan Limited | Public administration | 2017 |
| Aisha Zakho Ltd | Wholesale & retail | 2020 |
| Aishairbeauty Limited | Other services | 2024 |
| Aisles of Asia Ltd | Wholesale & retail | 2024 |
| Aismicro Ltd | Other services | 2025 |
| Aisnail Ltd | Other services | 2025 |
| Aitc Ltd | Information & communication | 2026 |
| Aitchison Homes From Home Ltd | Hospitality | 2025 |
| Aitchison Hydroseeding Limited | Administrative & support | 2005 |
| Aitchison Plumbing & GAS Ltd | Construction | 2023 |
| Aitchison Property Sourcing Ltd | Real estate | 2025 |
| Aitken Artisan Plasterwork Limited | Construction | 2021 |
| Aitken Brown Printing Limited | Manufacturing | 2017 |
| Aitken Electrics Limited | Manufacturing | 1978 |
| Aitken Plumbing and Heating Services Ltd | Construction | 2016 |
| Aitken Ventilation Limited | Construction | 2014 |
| Aitkenhead Ltd | Real estate | 2024 |
| Aitkens Group Limited | Financial services | 2020 |
| Aitkenwoods Ltd | Information & communication | 2023 |
| Aitq Service Ltd | Education | 2023 |
| Aiutilities Ltd | Administrative & support | 2024 |
| Aivantae Ltd | Wholesale & retail | 2025 |
| Aiza (Glasgow) Ltd | Wholesale & retail | 2015 |
| Aizal & Aiden Ltd | Health & social care | 2025 |
| Aizal&Co Limited | Wholesale & retail | 2025 |
| Aizle Property Limited | Households | 2021 |
| AJ & J Limited | Information & communication | 2019 |
| AJ 123 Ltd | Administrative & support | 2022 |
| AJ Advancements Ltd | Health & social care | 2023 |
| AJ Barber Hampden Ltd | Other services | 2025 |
| AJ Bradley & Co. Ltd | Professional & scientific | 2019 |
| AJ Builders (Scotland) Ltd. | Construction | 2007 |
| AJ Carpets Ltd | Wholesale & retail | 2022 |
| AJ Contracts Glasgow Ltd | Construction | 2025 |
| AJ Engineering & Construction Services Limited | Manufacturing | 1998 |
| AJ Entertainment Group UK Limited | Arts & recreation | 2022 |
| AJ Foods Glasgow Ltd | Wholesale & retail | 2022 |
| AJ Grocers Ltd | Wholesale & retail | 2025 |
| AJ Impex Limited | Wholesale & retail | 2019 |
| AJ Investments Scotland Limited | Financial services | 2024 |
| AJ Manpower Ltd | Administrative & support | 2019 |
| AJ Market Ltd | Wholesale & retail | 2026 |
| AJ Mart Asian Groceries and Daily Essentials Ltd | Wholesale & retail | 2025 |
| AJ Property (Scotland) Limited | Real estate | 2026 |
| AJ Rosario Ltd | Transport & logistics | 2024 |
| AJ Santokh Limited | Real estate | 2018 |
| AJ SET Joinery Limited | Information & communication | 2014 |
| AJ Smiles Dent Ltd | Health & social care | 2023 |
| AJ Social Ltd | Information & communication | 2019 |
| AJ SS Barbers Ltd | Other services | 2026 |
| AJ Tyre Centre Ltd | Wholesale & retail | 2026 |
| AJ Wilson (Assoc) Limited | Information & communication | 2007 |
| Aj&H Properties Ltd | Real estate | 2025 |
| AJ110 Limited | Households | 2025 |
| Ajacs Cleaners Limited | Administrative & support | 2016 |
| Ajal Supply Chain Consultants Ltd | Professional & scientific | 2024 |
| Ajax Automotive Solutions Ltd | Wholesale & retail | 2025 |
| Ajay Couriers Ltd | Transport & logistics | 2025 |
| AJB Aviation Services Limited | Manufacturing | 2020 |
| AJB Developments Limited | Construction | 2013 |
| AJB Scotland Ltd | Wholesale & retail | 2021 |
| AJB TV Limited | Professional & scientific | 2008 |
| Ajballantyne Ltd | Real estate | 2021 |
| Ajc(Scotland) Ltd | Administrative & support | 2021 |
| Ajceltic Ltd | Wholesale & retail | 2020 |
| AJD Flooring Ltd | Construction | 2026 |
| AJD Leisure Ltd | Arts & recreation | 2021 |
| AJE Management Limited | Arts & recreation | 2023 |
| AJE Renovations Limited | Real estate | 2025 |
| Ajeta Electrical Ltd | Construction | 2020 |
| AJH Renewables Ltd | Professional & scientific | 2026 |
| AJH Services - (Scotland) Ltd | Professional & scientific | 2023 |
| AJH Taxi Group Limited | Transport & logistics | 2020 |
| Ajimi Ltd | Hospitality | 2021 |
| Ajjb Testing Ltd | Information & communication | 2018 |
| AJK Govan Food Ltd | Hospitality | 2026 |
| AJK Project Services Ltd | Mining & quarrying | 2014 |
| AJK Ventures Limited | Real estate | 2025 |
| Ajkh Holdings Limited | Financial services | 2026 |
| AJL Holding Group Ltd | Financial services | 2024 |
| AJL Motor Group Limited | Wholesale & retail | 2019 |
| AJL Roofing & Solar Ltd | Construction | 2019 |
| AJL Services Ltd | Administrative & support | 2022 |
| Ajld Limited | Wholesale & retail | 2013 |