| A2MA Limited | Administrative & support | 2020 |
| A2R Europe Ltd | Financial services | 2013 |
| A2Z (Edinburgh) Ltd | Real estate | 2022 |
| A2Z Gifts Ltd | Wholesale & retail | 2026 |
| A2Z Logistics 786 Ltd | Transport & logistics | 2018 |
| A3K Ltd | Real estate | 2021 |
| A4 Properties Holding Limited | Real estate | 2024 |
| A4 Retail Limited | Wholesale & retail | 2024 |
| A4-TECH Limited | Energy | 2026 |
| A4C S Feeder LP | | 2013 |
| A701 Lettings Ltd | Real estate | 2025 |
| A987 Limited | Transport & logistics | 2016 |
| AA Ace Build Ltd | Construction | 2025 |
| AA Almond Bridge Properties Limited | Real estate | 2021 |
| AA and Bros Limited | Wholesale & retail | 2024 |
| AA Bazaar Ltd | Wholesale & retail | 2025 |
| AA Edinburgh Food Limited | Hospitality | 2020 |
| AA Edinburgh Ltd | Wholesale & retail | 2018 |
| AA Enterprise Edin Limited | Wholesale & retail | 2024 |
| AA FACTORY1 Limited | Hospitality | 2023 |
| AA Ironing & Tailoring Ltd | Households | 2019 |
| AA Kirkgate Store Limited | Wholesale & retail | 2026 |
| AA Pension Funding GP Limited | Financial services | 2013 |
| AA Pension Funding LP | | 2013 |
| AA Private Hire Ltd | Transport & logistics | 2024 |
| AA Properties Ventures Ltd | Real estate | 2026 |
| AA Takeaway Limited | Hospitality | 2026 |
| AAA Business Solutions Limited | Professional & scientific | 1999 |
| AAA Edinburgh Ltd | Professional & scientific | 2008 |
| AAA Properties (SC) Limited | Real estate | 2018 |
| Aaaa Taxi Ltd | Transport & logistics | 2023 |
| Aaafzal Ltd | Hospitality | 2024 |
| Aaai Properties Ltd | Real estate | 2025 |
| Aaal One Limited | Professional & scientific | 2002 |
| Aaanch Grill Limited | Hospitality | 2025 |
| Aaanch Rentals Limited | Administrative & support | 2022 |
| AAC Capital UK Fund III Carry LP | | 2011 |
| AAC Capital UK Fund III GP LP | | 2011 |
| AAC Charter & Logistic LP | | 2018 |
| AAC Technologies (Scotland) Limited | Administrative & support | 2020 |
| Aacm Developments Limited | Construction | 2026 |
| Aadent 1 Limited | Health & social care | 2025 |
| Aadkas Solutions Ltd | Information & communication | 2018 |
| Aadya Forecourts Limited | Wholesale & retail | 2016 |
| Aadya Retail Ltd | Wholesale & retail | 2019 |
| AAE1 GP LLP | | 2021 |
| AAE2 GP LLP | | 2022 |
| AAE3 GP LLP | | 2025 |
| AAF I L.P. | | 2014 |
| AAF II L.P. | | 2015 |
| AAF III L.P. | | 2016 |
| Aafric Foods Limited | Wholesale & retail | 2026 |
| AAG Edinburgh Ltd | Hospitality | 2023 |
| AAG World LP | | 2015 |
| Aagg Ltd | Wholesale & retail | 2023 |
| Aagg Property Ltd | Real estate | 2025 |
| Aahar Vihar Limited | Hospitality | 2024 |
| AAI Consulting Limited | Real estate | 2014 |
| Aairecool Technical Services Limited | Energy | 1991 |
| Aakpackages Ltd | Transport & logistics | 2025 |
| Aamg Services Ltd | Extraterritorial | 2016 |
| AAN Solutions Limited | Mining & quarrying | 2021 |
| Aanshu IT Solutions PVT Ltd | Information & communication | 2011 |
| Aanurseries Ltd | Education | 2026 |
| Aanya Tech Limited | Real estate | 2022 |
| Aapatelmax Ltd | Wholesale & retail | 2026 |
| Aarambh Consultant Ltd | Education | 2026 |
| Aardkloot Consulting Limited | Professional & scientific | 2015 |
| Aares Capital UK LP | | 2020 |
| Aaron Brook Game and Country Ltd | Wholesale & retail | 2021 |
| Aaron Smith Consulting Limited | Information & communication | 2023 |
| Aaron&Partners Art Dealers Cooperation LP | | 2015 |
| Aaruvika Limited | Information & communication | 2025 |
| Aasimaproperty Ltd | Real estate | 2024 |
| Aask (Scotland) Ltd | Hospitality | 2020 |
| Aasma Ventures Limited | Wholesale & retail | 2025 |
| AAT (Edinburgh) Ltd | Wholesale & retail | 2024 |
| AAT Environmental Trading LP | | 2015 |
| AAUK2 GP LLP | | 2020 |
| AB Access Solutions Ltd | Manufacturing | 2009 |
| AB Construction (Scotland) Ltd. | Wholesale & retail | 2002 |
| AB Consulting (Edinburgh) Limited | Professional & scientific | 2014 |
| AB Dermatopathology Consultations Limited | Health & social care | 2024 |
| AB Driving School Ltd | Education | 2023 |
| AB Electrical Compliance Consultants Ltd | Professional & scientific | 2021 |
| AB Gill Ltd | Wholesale & retail | 2024 |
| AB Home Essentials Limited | Wholesale & retail | 2023 |
| AB International Trading Limited | Professional & scientific | 2018 |
| AB Lighting Design Limited | Professional & scientific | 2013 |
| AB OVO Ventures Ltd | Professional & scientific | 2016 |
| AB Pritchard Limited | Financial services | 2025 |
| AB Retail Logistics LP | | 2016 |
| AB Retail Ltd | Wholesale & retail | 2026 |
| AB Sales Ltd | Wholesale & retail | 2025 |
| AB Scotland Finance I, LP | | 2015 |
| AB Scotland Finance II, LP | | 2015 |
| AB Scotland Limited Partnership | | 2005 |
| AB Ventures Edinburgh Ltd | Wholesale & retail | 2023 |
| Ab&C Management Ltd | Professional & scientific | 2025 |
| Ab&Co International LP | | 2022 |