| Acupuncture & Health Centre Ltd | Health & social care | 2010 |
| Acura Trading LP | | 2012 |
| Acuronholdings Ltd | Public administration | 2021 |
| Acushla Ltd | Professional & scientific | 2018 |
| Acustom Trade LP | | 2016 |
| AD Astra Edinburgh Ltd | Real estate | 2022 |
| AD Astra Nursery Ltd | Financial services | 2025 |
| AD Cleaning Services Edinburgh Ltd | Administrative & support | 2020 |
| AD HOC Admin Ltd | Administrative & support | 2019 |
| AD Holding Company Limited | Financial services | 2008 |
| AD Marketing Services Ltd | Information & communication | 2021 |
| AD Medical Limited | Health & social care | 2019 |
| AD Paragon Ltd | Wholesale & retail | 2020 |
| AD Project Management Ltd | Administrative & support | 2022 |
| AD Valorem Property Ltd | Households | 2022 |
| ADA Fitness Ltd | Arts & recreation | 2019 |
| ADA Food and Catering Ltd | Hospitality | 2026 |
| ADA K Consulting Ltd | Information & communication | 2018 |
| Adac Haulage Ltd | Transport & logistics | 2015 |
| Adai Consult LP | | 2016 |
| Adair Dental Laboratory Ltd. | Manufacturing | 2009 |
| Adalan Trade LP | | 2018 |
| Adalie Holding LP | | 2018 |
| Adalpine Enterprises Ltd | Wholesale & retail | 2023 |
| Adalwin LP | | 2015 |
| Adam Advisory Associates Limited | Professional & scientific | 2023 |
| Adam and EVE Autovista Limited | Wholesale & retail | 2025 |
| Adam Auld Footcare Limited | Health & social care | 2017 |
| Adam Auto Splash Ltd | Administrative & support | 2024 |
| Adam Bednarz Ltd | Administrative & support | 2016 |
| Adam Bird Limited | Other services | 2025 |
| Adam Invest L.P. | | 2008 |
| Adam Lewis Limited | Health & social care | 2025 |
| Adam Narratives Ltd | Information & communication | 2025 |
| Adam, Kirkton & Co. | | 1996 |
| Adamant Media LP | | 2013 |
| Adamant Trading LP | | 2016 |
| Adamantis Services LP | | 2015 |
| Adamantium Coaching Ltd | Health & social care | 2023 |
| Adamas Properties Limited | Real estate | 2026 |
| Adamic Ltd | Information & communication | 2016 |
| Adams & Rebus Property Ltd | Real estate | 2024 |
| Adams Building Consultancy Ltd. | Professional & scientific | 2017 |
| Adams Clinical Ltd | Information & communication | 2025 |
| Adams Hotels Group Limited | Professional & scientific | 1997 |
| Adams Legal Solutions Limited | Professional & scientific | 2016 |
| Adamster Impex LP | | 2012 |
| Adamswell Street Properties Limited | Real estate | 2024 |
| Adan Adam Group Limited | Wholesale & retail | 2023 |
| Adanai Holding LP | | 2016 |
| Adapa UK Edinburgh Limited | Wholesale & retail | 2002 |
| Adapptive Limited | Information & communication | 2017 |
| Adapt Strength Gym Limited | Arts & recreation | 2023 |
| Adaptogen Battery Storage Carry GP LLP | | 2021 |
| Adaptogen Battery Storage Carry LP | | 2021 |
| Adara Design Limited | Information & communication | 2015 |
| Adaria Business LP | | 2017 |
| Adaxia CV I Carry GP LLP | | 2023 |
| Adaxia CV I Carry LP | | 2024 |
| Adaxia Scotland GP Limited | Financial services | 2015 |
| ADB Acting Limited | Arts & recreation | 2022 |
| ADC Global Services LP | | 2016 |
| Adcon Group LP | | 2019 |
| Adconcept LP | | 2019 |
| ADD Commodities LP | | 2015 |
| Addax Business Holdings LP | | 2018 |
| Addax Business LP | | 2017 |
| Adderley Ltd | Professional & scientific | 2018 |
| Addgency LP | | 2025 |
| Addigag Digital Agency L.P. | | 2015 |
| Addington Global LP | | 2015 |
| Addison Eyes Limited | Health & social care | 2013 |
| Addison Homes Ltd | Real estate | 2019 |
| Addityv Limited | Information & communication | 2021 |
| Addleshaw Goddard (Scotland) LLP | | 2005 |
| Addleshaw Goddard (Scotland) Secretarial Limited | Professional & scientific | 1991 |
| Addleshaw Goddard (Scotland) Services Limited | Professional & scientific | 1990 |
| Addynamix LP | | 2023 |
| ADE (Edinburgh) Limited | Professional & scientific | 2020 |
| ADE Exports Limited | Wholesale & retail | 2019 |
| Adee Property Ltd | Real estate | 2025 |
| Adee Property Sourcing Ltd | Real estate | 2025 |
| Adeel Communications Ltd | Manufacturing | 2021 |
| Adeira Group LP | | 2016 |
| Adel Invest LP | | 2015 |
| Adela Export LP | | 2016 |
| Adelain Corporate LP | | 2016 |
| Adele Gordon Aesthetics Ltd | Health & social care | 2025 |
| Adelfus Corp. LP | | 2019 |
| Adeline IT Consulting LP | | 2014 |
| Adeline Solutions LP | | 2014 |
| Adelite Business LP | | 2015 |
| Adelite Union LP | | 2015 |
| Adella Alliance LP | | 2014 |
| Adella Technologies LP | | 2014 |
| Adelon Global LP | | 2014 |
| Adelong Project LP | | 2016 |
| Adelphi Testing Limited | Information & communication | 2007 |
| Adelta Corp. LP | | 2016 |
| Adelta Trading LP | | 2011 |