| Afflinity Ltd | Other services | 2019 |
| AFG Properties Limited | Real estate | 2017 |
| Africscots Limited | Transport & logistics | 2026 |
| Afro Crest Limited | Hospitality | 2024 |
| Afyshc Limited | Administrative & support | 2025 |
| AG Rendering Ltd | Construction | 2023 |
| Agarwal Estates Limited | Real estate | 2023 |
| Agata Naturals Ltd | Manufacturing | 2024 |
| Aged to Perfection Upholstery (Scotland) Ltd | Manufacturing | 2022 |
| Agila Limited | Information & communication | 2005 |
| Agilesoft Solutions Ltd | Information & communication | 2016 |
| Ahalya Dance Academy Ltd | Arts & recreation | 2024 |
| AHM Mechanical Services Limited | Construction | 2025 |
| AHS Electrical Solutions Ltd | Construction | 2020 |
| AHS Logistix Ltd | Transport & logistics | 2025 |
| Aimex Media Ltd. | Professional & scientific | 1997 |
| AIR4I Limited | Information & communication | 2018 |
| Airlie Actuarial Contracting Ltd. | Administrative & support | 2009 |
| Airmarine Agency LP | | 2019 |
| Airsoft Workshop Ltd | Wholesale & retail | 2023 |
| Ajit Info Tech Limited | Information & communication | 2018 |
| AJT66 Ltd | Extraterritorial | 2013 |
| AK S&T Ltd | Professional & scientific | 2025 |
| Akash Infosystems Ltd | Information & communication | 2014 |
| AKC Independent Financial Advisers Ltd | Financial services | 2016 |
| AKK Management Consulting Limited | Professional & scientific | 2011 |
| Akro Plant Limited | Administrative & support | 1991 |
| AKT Bookkeeping Ltd | Construction | 2020 |
| AL Anqa Ltd | Professional & scientific | 2020 |
| Alastair Stables Automotive Ltd. | Wholesale & retail | 2012 |
| Albacare Limited | Health & social care | 2007 |
| Albacare Training Services Ltd. | Education | 2009 |
| Albamet Ltd | Water & waste | 2015 |
| Albin Hearing Ltd | Health & social care | 2026 |
| Alehan Ltd | Real estate | 2020 |
| Alex MM08 Ltd | Construction | 2026 |
| Alex Nangle (Electrical) Limited | Wholesale & retail | 1988 |
| Alhama Holdings Limited | Financial services | 2018 |
| Alhama UBB Limited | Financial services | 2019 |
| Alinaz Civil Engineering Limited | Professional & scientific | 2025 |
| ALL Care Services Ltd | Health & social care | 2018 |
| ALL in One Automotive Ltd | Wholesale & retail | 2023 |
| ALL Surface Solutions Limited | Construction | 2017 |
| Allan's Commercial Ltd | Wholesale & retail | 2023 |
| Allcourt Solicitors Limited | Professional & scientific | 2013 |
| Allen + Partners Limited | Real estate | 2024 |
| Allied Development Scotland Limited | Construction | 2021 |
| Allkor Plus Ltd | Professional & scientific | 2018 |
| Allsopp Properties (SA) Ltd | Real estate | 2019 |
| Allsopp Properties Ltd | Real estate | 2019 |
| Allsortsonline Ltd | Wholesale & retail | 2019 |
| Allure Skin Clinic Ltd | Other services | 2015 |
| ALM Motors Limited | Wholesale & retail | 2019 |
| Almond Automotive Consultancy Ltd | Professional & scientific | 2016 |
| Almond Cleaning Services Limited | Administrative & support | 2010 |
| Almond Engineering Limited | Manufacturing | 2002 |
| Almond Enterprises Limited | Administrative & support | 2005 |
| Almond Roofing Ltd | Construction | 2026 |
| Almond Valley Property Limited | Administrative & support | 2017 |
| Almondbank Consultants Ltd | Professional & scientific | 2016 |
| Almondvale Consulting Ltd | Professional & scientific | 2022 |
| Almondvale LLP | | 2013 |
| Almondvale Property Solutions Ltd | Real estate | 2019 |
| Alter Technology TUV Nord Holdings Limited | Financial services | 2008 |
| Alter Technology TUV Nord UK Limited | Manufacturing | 2003 |
| Alternate Energy UK Ltd | Construction | 2013 |
| Altiora Global Limited | Information & communication | 2025 |
| Altrakk Ltd | Construction | 2025 |
| Alvie Developments Limited | Construction | 2019 |
| Alvie DOM Limited | Professional & scientific | 2022 |
| Always Recommended Ltd | Construction | 2022 |
| Aláinn Skin & Wellness Limited | Other services | 2022 |
| AM Hunt Telecoms Limited | Information & communication | 2015 |
| Am-Dash Ltd | Wholesale & retail | 2023 |
| AMA Solutions (Scotland) Limited | Transport & logistics | 2017 |
| Amass Property Limited | Real estate | 2024 |
| Amax Games Limited | Information & communication | 2026 |
| AMG Letting Limited | Real estate | 2017 |
| Amiedo Ltd | Manufacturing | 2025 |
| Amory Livingston Ltd | Wholesale & retail | 2026 |
| Ampersand Copy Ltd | Professional & scientific | 2023 |
| AMS Accountax Limited | Professional & scientific | 2019 |
| Anatoth Afro Carribean Foods: Afro / Caribb / Euro Beauty Accesorries. Ltd | Wholesale & retail | 2024 |
| Anchorholds Limited | Financial services | 2014 |
| AND Creatives Marketing Ltd | Professional & scientific | 2026 |
| Ander-Quinn Investments Ltd | Real estate | 2024 |
| Andershine Cleaning Services Ltd | Administrative & support | 2024 |
| Anderson KBB Ltd | Construction | 2025 |
| Andrea Wood Transport Ltd | Transport & logistics | 2009 |
| Andrew Chappell Fitness Ltd | Health & social care | 2023 |
| Andrew Cowan Scott Limited | Manufacturing | 2016 |
| Andrew Garrett Limited | Information & communication | 2014 |
| Andrew S. Clark & Company. Limited | Professional & scientific | 1930 |
| Andy's Card Kingdom Limited | Wholesale & retail | 2025 |
| Aniello Holdings Limited | Information & communication | 2023 |
| Anis Shields Limited | Administrative & support | 2025 |
| Annex AV Ltd | Wholesale & retail | 2004 |
| ANO Logistics Ltd | Transport & logistics | 2025 |
| ANO Property Ltd | Real estate | 2024 |
| Ansale Property Limited | Real estate | 2019 |