| Adrem Technology Limited | Professional & scientific | 2009 |
| Adrestria Projects Ltd | Professional & scientific | 2020 |
| Adria Developments Limited | Real estate | 2021 |
| Adria Group Limited | Professional & scientific | 2008 |
| Adrian Plumber Ltd | Construction | 2026 |
| Adrianna Sosnowska Consulting Ltd | Administrative & support | 2022 |
| Adsap Properties Ltd | Real estate | 2024 |
| Adsy Creative Limited | Information & communication | 2020 |
| Adtermino Ltd | Professional & scientific | 2019 |
| ADV Bark Ltd | Real estate | 2022 |
| Advanced Logistics Solutions Ltd | Professional & scientific | 2024 |
| Adventure Calls Limited | Administrative & support | 2022 |
| Adventures by AJM Ltd | Administrative & support | 2025 |
| Advocacy Service Aberdeen (A.S.A.) | Health & social care | 1998 |
| ADW Hire Ltd | Administrative & support | 2019 |
| AE & Sons Trading Ltd | Wholesale & retail | 2016 |
| AE Drilling Limited | Other services | 2011 |
| AE Gyms Ltd | Arts & recreation | 2018 |
| Ae&I Limited | Professional & scientific | 2017 |
| Aecs Gray Engineering Ltd. | Professional & scientific | 2007 |
| AEG Consultants Ltd | Professional & scientific | 2015 |
| Aegys Ltd | Professional & scientific | 2024 |
| Aenside Limited | Construction | 2017 |
| Aeon Geoscience Systems Limited | Information & communication | 2016 |
| Aeonos Limited | Information & communication | 2021 |
| AEP Hub Cafe Limited | Hospitality | 2012 |
| Aeriall Limited | Hospitality | 2016 |
| Aerix Group Ltd | Administrative & support | 2016 |
| Aerolopa Ltd | Information & communication | 2024 |
| Aesternum Ltd | Health & social care | 2026 |
| Aestheticsbyallie Ltd | Other services | 2025 |
| Aetearis Ltd | Professional & scientific | 2026 |
| Aetechservices Limited | Mining & quarrying | 2013 |
| Aethereon UK Ltd | Wholesale & retail | 2025 |
| AF Engineering Ltd | Administrative & support | 2012 |
| AF Well Engineering Limited | Professional & scientific | 2021 |
| AF25 Limited | Wholesale & retail | 2022 |
| Afab Holdings Limited | Manufacturing | 1997 |
| AFC Community Trade Company Limited | Arts & recreation | 2019 |
| Affa Fine Ltd | Information & communication | 2019 |
| Affa Quine Productions Ltd | Arts & recreation | 2024 |
| Affan Engineering Ltd | Professional & scientific | 2012 |
| Affinity Offshore Ltd | Professional & scientific | 2022 |
| Affordable Cars Aberdeen Ltd | Wholesale & retail | 2025 |
| AFG Licencing Ltd | Hospitality | 2018 |
| Afiniti Consultants LLP | | 2015 |
| Afmac Holdings Limited | Administrative & support | 2024 |
| Aforsyth Joinery Ltd | Construction | 2026 |
| Africa Coaching and Mentorship Initiative Ltd | Administrative & support | 2025 |
| Africa Great Future Development Ltd | Energy | 2022 |
| African Council Limited | Education | 2013 |
| African Food Hub Limited | Wholesale & retail | 2024 |
| Africentre Foods Ltd | Wholesale & retail | 2022 |
| Afrifashionuk Ltd | Professional & scientific | 2024 |
| Afrimart Ltd | Wholesale & retail | 2023 |
| Afrin Property Ltd | Real estate | 2022 |
| Afrobloss Food Mart Ltd | Wholesale & retail | 2026 |
| Afropol Ltd | Manufacturing | 2020 |
| AFS Technologies Services Limited | Professional & scientific | 2018 |
| Afzal Private Ltd | Real estate | 2023 |
| AG Aesthetics and Beauty Limited | Other services | 2025 |
| AG Grant Limited | Hospitality | 2018 |
| AG Kennels Ltd | Agriculture & fishing | 2026 |
| Agata Futures Limited | Administrative & support | 2019 |
| AGB Marketing Ltd | Professional & scientific | 2024 |
| AGB Property Solutions Ltd | Households | 2024 |
| AGB Surveyors Ltd | Construction | 2026 |
| Agcasar Ltd | Real estate | 2026 |
| AGE Engineering Ltd | Administrative & support | 2017 |
| Agency Resource Ltd. | Professional & scientific | 2000 |
| Agendums Strategic Solutions Ltd | Professional & scientific | 2023 |
| Agents of Digital Change Ltd | Professional & scientific | 2024 |
| AGH Projects Ltd | Construction | 2025 |
| AGI Facades Ltd | Construction | 2023 |
| Agidale Limited | Information & communication | 2017 |
| Agile Energy Recovery (Inverurie) Limited | Other services | 2014 |
| Agile Energy Recovery Limited | Administrative & support | 2012 |
| Agile IH Software Limited | Information & communication | 2017 |
| Agile Knowledge Management Limited | Information & communication | 2009 |
| Agile Management Systems Ltd | Construction | 2019 |
| Agile Resource Recovery Ltd | Water & waste | 2025 |
| Agilient Talent Partners Ltd | Administrative & support | 2025 |
| Agility NDE Ltd | Wholesale & retail | 2017 |
| Agility Systems Limited | Information & communication | 2015 |
| Aglow Global Limited | Manufacturing | 2025 |
| Aglow Properties Limited | Real estate | 2025 |
| Aglow Sports Konsult Limited | Arts & recreation | 2025 |
| AGM Construction Aberdeen Ltd | Construction | 2021 |
| AGM Medicolegal Ltd | Professional & scientific | 2026 |
| Agnes's Angels Ltd | Administrative & support | 2018 |
| AGR (Aberdeen) Limited | Mining & quarrying | 2011 |
| AGR Consultancy (Aberdeen) Limited | Professional & scientific | 2020 |
| Agritrust Ltd | Information & communication | 2026 |
| Agro & Commodities U.K. Ltd | Wholesale & retail | 2025 |
| AGS Financial Consulting Limited | Professional & scientific | 2019 |
| AGY Services Ltd | Professional & scientific | 2021 |
| AH Baby Ltd | Wholesale & retail | 2020 |
| AH Feeing Services Ltd | Professional & scientific | 2012 |
| AH FFF Coaching LLP | | 2025 |
| Ah-See (UK) Limited | Real estate | 2009 |