| Aurora Universal LP | | 2015 |
| Aurthurs Ltd | Real estate | 2021 |
| Aurticom LP | | 2019 |
| Aurum Corp. LP | | 2016 |
| Aurum Essentials Ltd | Wholesale & retail | 2025 |
| Aurum Impex LP | | 2016 |
| Aurum Tides Ltd | Wholesale & retail | 2025 |
| Aurza Limited | Wholesale & retail | 2021 |
| Ausden Consulting Limited | Professional & scientific | 2022 |
| Auspicious Range LP | | 2016 |
| Austex Universal LP | | 2015 |
| Australis Management LP | | 2013 |
| Ausuk Consulting Limited | Education | 2024 |
| Autentic Life LP | | 2024 |
| Authentic Customer Spaces Limited | Professional & scientific | 2026 |
| Authentic Ethiopian Cuisine Limited | Hospitality | 2021 |
| Authentic Moroccan Ltd | Wholesale & retail | 2023 |
| Authentic Technology L.P. | | 2012 |
| Authentology Limited | Wholesale & retail | 2025 |
| Author Brand Audit Ltd | Information & communication | 2023 |
| Autistiq-Consultant Limited | Information & communication | 2025 |
| Auto Adventure Travels & Tours Limited | Administrative & support | 2024 |
| Auto Donna Group LP | | 2017 |
| Auto FIX Garage Ltd | Wholesale & retail | 2016 |
| Auto Korea L.P. | | 2012 |
| Auto Locks 24/7 Ltd | Other services | 2025 |
| Auto Range Car Sales Ltd | Wholesale & retail | 2017 |
| Auto Solutions (EK) Ltd | Wholesale & retail | 2016 |
| Auto Trade Business LP | | 2017 |
| Auto-Remap LP | | 2016 |
| Auto-Technical Edinburgh Ltd | Wholesale & retail | 2020 |
| Auto-Xl LLP | | 2008 |
| Autobahn Enterprise Ltd | Wholesale & retail | 2025 |
| Autocatalyst Market LP | | 2019 |
| Autofoam Edinburgh Ltd | Administrative & support | 2025 |
| Autofoam Ltd | Administrative & support | 2015 |
| Autofusionedinburgh Ltd | Administrative & support | 2025 |
| Autolex Trade L.P. | | 2015 |
| Automated Investments LP | | 2016 |
| Automation and General Securities Limited | Construction | 1956 |
| Automation Enterprise Ltd | Information & communication | 2025 |
| Automax Scotland Ltd | Wholesale & retail | 2025 |
| Automobile Recovery 2023 Limited | Transport & logistics | 1979 |
| Automodern LP | | 2016 |
| Autonomo Limited | Information & communication | 2023 |
| Autonomo UK Limited | Extraterritorial | 2023 |
| Autorevenue Systems Ltd | Information & communication | 2026 |
| Autoscan Limited | Manufacturing | 1957 |
| Autoshine Express Ltd. | Other services | 2000 |
| Autotec Engineering L.P. | | 2006 |
| Autovalet (Galashiels) Ltd. | Wholesale & retail | 2015 |
| Autozone Edinburgh Limited | Wholesale & retail | 2021 |
| Autumn Flower SP | | 2001 |
| Autumn Moon Ltd | Real estate | 2016 |
| AV Business Ltd | Professional & scientific | 2012 |
| AV Business Solutions LP | | 2015 |
| AV Club Productions Ltd | Information & communication | 2021 |
| AV I (Scotland) Ltd | Financial services | 2019 |
| AV I FP LP | | 2019 |
| AV II FP LP | | 2022 |
| AV III FP LP | | 2026 |
| AV Malcolm Ltd | Professional & scientific | 2022 |
| AV Transcargo LP | | 2011 |
| AV8 Technologies Ltd | Information & communication | 2019 |
| AVA 406 Ltd | Wholesale & retail | 2026 |
| AVA Air LP | | 2014 |
| AVA Convenience Store Ltd | Wholesale & retail | 2026 |
| AVA Grayson Properties Ltd | Construction | 2021 |
| AVA Property Holdings Limited | Real estate | 2024 |
| AVA Technology Ltd | Information & communication | 2024 |
| Avae Consulting LP | | 2026 |
| Avagar Steel LP | | 2016 |
| Avail Trade LP | | 2017 |
| Availability Solutions Ltd | Hospitality | 2021 |
| Availway LP | | 2018 |
| Avakum Alliance LP | | 2017 |
| Avalanche Finance LP | | 2016 |
| Avallon Incorporation LP | | 2017 |
| Avallon Industries LP | | 2016 |
| Avalon Business Solutions Limited | Real estate | 2006 |
| Avalon Develop Ltd | Wholesale & retail | 2022 |
| Avalon Scotland Limited | Transport & logistics | 2018 |
| Avaloq Innovation Ltd. | Information & communication | 2011 |
| Avamonte LP | | 2015 |
| Avandy Systems LP | | 2015 |
| Avant Homes (Scotland MK) Limited | Administrative & support | 1989 |
| Avant Homes (Scotland) Limited | Construction | 1946 |
| Avante Business Group LP | | 2016 |
| Avante Media Ltd | Administrative & support | 2023 |
| Avante Pharm Ltd | Wholesale & retail | 2023 |
| Avantglamp Limited | Hospitality | 2022 |
| Avanti Commercial Properties Ltd | Real estate | 2014 |
| Avanti Consult and Management LP | | 2014 |
| Avanti Learning Consultancy Ltd | Professional & scientific | 2014 |
| Avanti Services Group Ltd | Construction | 2021 |
| Avanti Trade LP | | 2015 |
| Avard Invest LP | | 2013 |
| Avaterra Limited | Professional & scientific | 2020 |
| Avaza Trade LP | | 2016 |
| Avdor Corporate LP | | 2017 |