| 1 Architects Ltd | Professional & scientific | 2009 |
| 1ST RDS Limited | Manufacturing | 2013 |
| 1ST Safety Solutions Limited | Professional & scientific | 2011 |
| 1ST Solutions Group Limited | Financial services | 2025 |
| 1ST Training Solutions Limited | Education | 2025 |
| 2020 Together (WE CAN) Ltd | Other services | 2022 |
| 2020 Together (WE CAN) Operations Ltd | Education | 2023 |
| 22TEN Business Advisors Ltd. | Professional & scientific | 2012 |
| 269 Vegan Ltd | Wholesale & retail | 2018 |
| 3 Point Management Limited | Real estate | 2013 |
| 300 Group Ltd | Other services | 2018 |
| 370 Consulting Ltd | Professional & scientific | 2025 |
| 3D Properties (Scotland) Limited | Construction | 2024 |
| 3SJP Ltd | Hospitality | 2021 |
| 432 Presents CIC | Arts & recreation | 2022 |
| 555 Autos Limited | Wholesale & retail | 2024 |
| 7 Eleven Retail Dundee Limited | Wholesale & retail | 2025 |
| 7 Eleven Retail Ltd | Wholesale & retail | 2024 |
| 7 Hospitality Management (UK) Ltd | Real estate | 2018 |
| 82RG Ltd. | Information & communication | 2012 |
| 8488 Motor Services Ltd | Wholesale & retail | 2024 |
| A & a Mcphee (Haulage) Limited | Transport & logistics | 2012 |
| A & B Garage Limited | Wholesale & retail | 2024 |
| A & D Developments (Scotland) Limited | Construction | 2018 |
| A & M Investments (Aberdeen) Limited | Real estate | 1998 |
| A & S Drainage Limited | Construction | 2017 |
| A F Flooring Limited | Other services | 2015 |
| A G Mechanic's Ltd | Extraterritorial | 2021 |
| A Jenson Properties Limited | Administrative & support | 2016 |
| A List (Perth) Limited | Construction | 2012 |
| A M Fire & Security Systems Ltd | Manufacturing | 2003 |
| A M Hull Limited | Health & social care | 2015 |
| A Maclachlan Associates Ltd. | Extraterritorial | 2018 |
| A S Electrical (Perth) Limited | Manufacturing | 2017 |
| A&B Shearing Legal Consultants Limited | Professional & scientific | 2024 |
| A&K FAM Properties Ltd | Real estate | 2023 |
| A-Squared Engineering Ltd | Professional & scientific | 2018 |
| A. & J. Stephen (Builders) Limited | Construction | 1975 |
| A. & J. Stephen (Holdings) Limited | Construction | 1975 |
| A. & J. Stephen Limited | Construction | 1961 |
| A.C Management Consulting Limited | Professional & scientific | 2004 |
| A.J. Morton Ltd | Transport & logistics | 2025 |
| A.W. Hannah Limited | Construction | 2022 |
| Aady Creative Ltd | Information & communication | 2025 |
| Aareb Ltd | Wholesale & retail | 2020 |
| Abbott Associates Limited | Financial services | 2001 |
| ABC Motor Services Ltd | Wholesale & retail | 2024 |
| Abcd Content Services Ltd | Information & communication | 2026 |
| Abdie Solutions Limited | Professional & scientific | 2011 |
| ABE Aero Ltd | Professional & scientific | 2014 |
| Aberarder Wind Farm (Scotland) Limited | Energy | 2022 |
| Aberfeldy Caravan Park Limited | Hospitality | 2014 |
| Abernyte Brewery Limited | Manufacturing | 2015 |
| Abernyte C.I.C. | Other services | 2006 |
| Abernyte Stay and Play CIC | Arts & recreation | 2024 |
| Abertay Property Company Limited | Real estate | 1994 |
| ABL (Secretaries) Limited | Administrative & support | 2001 |
| ABL (Trustees & Nominees) Limited | Administrative & support | 2001 |
| Abla Arabians Ltd | Agriculture & fishing | 2016 |
| ABM Construction Scotland Limited | Construction | 2022 |
| Abrel Ltd | Education | 2026 |
| ABS Heating Limited | Construction | 2002 |
| ABX Beauty Limited | Professional & scientific | 2009 |
| ACCELER8 Competitions Ltd | Arts & recreation | 2023 |
| Ace Gymnastics Perth Limited | Arts & recreation | 2026 |
| Ace Plant & Commercials Ltd | Wholesale & retail | 2022 |
| Acepert Ltd | Wholesale & retail | 2024 |
| Achnasheen Hydro Developments Limited | Construction | 2010 |
| Achnasheen Hydro LLP | | 2010 |
| Achomer Energy Ltd | Administrative & support | 2011 |
| ACJ Joinery & Construction Ltd | Construction | 2024 |
| Acjl Properties Ltd | Real estate | 2022 |
| ACL Prestige Properties Ltd | Real estate | 2025 |
| Acorn Cafe CIC | Hospitality | 2024 |
| Acornz Limited | Extraterritorial | 2012 |
| Acre Care Homes Limited | Professional & scientific | 2005 |
| Active Service Limited | Wholesale & retail | 2006 |
| Actrav Limited | Administrative & support | 2009 |
| Adam Ace Traders Ltd | Wholesale & retail | 2025 |
| Adam Mcnee Interior Design Limited | Wholesale & retail | 1985 |
| ADD Lettings Ltd | Real estate | 2023 |
| Adele Hair Design Ltd. | Wholesale & retail | 2013 |
| Admiralty Retail Ltd | Wholesale & retail | 2021 |
| Advanced Specialist Care Limited | Health & social care | 1986 |
| Advantage Associates (Perth) Limited | Health & social care | 2017 |
| Adventurously Ltd | Wholesale & retail | 2023 |
| AE Properties Scotland Ltd | Real estate | 2025 |
| Aegis Care Services Ltd | Health & social care | 2019 |
| Aeroanalytics Ltd | Agriculture & fishing | 2024 |
| AGB Joinery Limited | Construction | 2017 |
| AGB Scotland Limited | Construction | 2008 |
| Agilecadence Limited | Information & communication | 2012 |
| Agnb Leisure Ltd | Hospitality | 2023 |
| Agri Plastics Recycling Ltd | Manufacturing | 2023 |
| Agricultural & Forestry Contractor Limited | Agriculture & fishing | 2021 |
| Agrivent Ltd | Manufacturing | 2020 |
| Agrivision (Scotland) Ltd | Administrative & support | 2013 |
| AGT Adventure Hire Limited | Administrative & support | 2026 |
| AH Construction Consultancy Ltd | Construction | 2026 |
| Aict GBP Real Estate (Curtain House) General Partner Limited | Financial services | 2021 |