| Alex M Grant & Company Limited | Financial services | 2002 |
| Alex Magee Ltd | Professional & scientific | 2025 |
| Alex Millar (Builders) Limited | Extraterritorial | 1973 |
| Alex Quinn & Partners Ltd. | Professional & scientific | 2004 |
| Alex Trading Corporation | | 2009 |
| Alex Wayne Ltd | Administrative & support | 2025 |
| Alexa Building Limited | Construction | 2024 |
| Alexander Cargill Ltd | Arts & recreation | 2014 |
| Alexander Coakley Limited | Health & social care | 2025 |
| Alexander Group (Scotland) Ltd | Other services | 2020 |
| Alexander Inglis and SON Limited | Wholesale & retail | 1950 |
| Alexander Macrae Global Limited | Administrative & support | 2018 |
| Alexander Mccall-Smith Limited | Manufacturing | 2011 |
| Alexander Moffat & Co WS | Professional & scientific | 1999 |
| Alexander Morrison Limited | Construction | 1963 |
| Alexander NKI Ltd | Construction | 2025 |
| Alexander Property Rentals Limited | Real estate | 2025 |
| Alexander Ramsay Group Ltd | Construction | 2024 |
| Alexander Redpath Property Limited | Real estate | 2022 |
| Alexander Smith Property Ltd | Real estate | 2016 |
| Alexander Steele Ltd | Professional & scientific | 2018 |
| Alexander&Partners LP | | 2014 |
| Alexanders of Edinburgh Limited | Professional & scientific | 2015 |
| Alexandra Alliance L.P. | | 2010 |
| Alexandra Commerce LP | | 2016 |
| Alexandra Corporation L.P. | | 2012 |
| Alexandre Motor Company Ltd | Wholesale & retail | 2024 |
| Alexandria Buchanan Ltd. | Administrative & support | 2011 |
| Alexandria Eleta Minor Ltd | Professional & scientific | 2025 |
| Alexter Industries LP | | 2012 |
| Alexterrible LP | | 2022 |
| Alexu Hearts Ltd | Manufacturing | 2017 |
| Alezo Ltd | Transport & logistics | 2026 |
| ALF Industries LP | | 2014 |
| Alfa & Western L.P. | | 2012 |
| Alfa Alliance L.P. | | 2015 |
| Alfa Business Services L.P. | | 2012 |
| Alfa Communication LP | | 2015 |
| Alfa Company Services LP | | 2016 |
| Alfa Corporation L.P. | | 2011 |
| Alfa International Investments L.P. | | 2009 |
| Alfa Lead Ltd | Wholesale & retail | 2025 |
| Alfa Letting Ltd | Real estate | 2025 |
| Alfa Logistics LP | | 2016 |
| Alfa Overseas L.P. | | 2008 |
| Alfa Resources LP | | 2016 |
| Alfa Studio LLP | | 2019 |
| Alfa Trading and Consultancy Limited | Other services | 2013 |
| Alfa Trading Group LP | | 2016 |
| Alfa Universal L.P. | | 2012 |
| Alfa Wood Investment LP | | 2016 |
| Alfa Worldwide L.P. | | 2008 |
| Alfaad LP | | 2014 |
| Alfacorp Shipping LP | | 2016 |
| Alfafin | | 2004 |
| Alfafix Group LP | | 2016 |
| Alfainvest L.P. | | 2011 |
| Alfamet Trading LP | | 2016 |
| Alfant Industries LP | | 2013 |
| Alfar Commerce LP | | 2017 |
| Alfaraj Global Trade & Services Ltd | Wholesale & retail | 2024 |
| Alfarama LP | | 2016 |
| Alfatel Livestock Trade Holdings LP | | 2018 |
| Alfaville Ventures LP | | 2015 |
| Alfero Group LP | | 2018 |
| Alfiegroup Ltd | Construction | 2024 |
| Alford Group LP | | 2016 |
| Alfra Investments LP | | 2007 |
| Alfred Couk Wine and Spirits Limited | Extraterritorial | 1998 |
| Alfred Dunhill Links Foundation | Arts & recreation | 2011 |
| Alfred Mcalpine Asphalt Limited | Manufacturing | 2021 |
| Alfred Stewart Properties Limited | Real estate | 1974 |
| Alfred Stewart Property Foundation Limited | Real estate | 2009 |
| Alfunoon Design Ltd | Other services | 2024 |
| Alfy Traders Ltd | Professional & scientific | 2021 |
| ALG Restaurants Ltd | Hospitality | 2024 |
| Algacraft Ltd | Professional & scientific | 2019 |
| Algae Zulu LP | | 2008 |
| Algebra Limited | Hospitality | 2021 |
| Algena Trade LP | | 2011 |
| Algisys Aqua Limited | Manufacturing | 2025 |
| Algisys UK Limited | Manufacturing | 2023 |
| Algol Trade LP | | 2017 |
| Algoresearch LP | | 2017 |
| Algorithm Engineering Ltd | Professional & scientific | 2023 |
| Algotradingfun LP | | 2018 |
| Algotronix Limited | Information & communication | 1998 |
| Alhambra L.P. | | 2023 |
| Alhambra Theatre Landholdings Limited | Arts & recreation | 2013 |
| Alhambra Theatre Limited | Arts & recreation | 2008 |
| Alhambra Theatre Trust | Arts & recreation | 2008 |
| Alhasso Urology Services Limited | Health & social care | 2010 |
| ALI Group Ltd | Real estate | 2020 |
| Ali's Pennywell Ltd | Wholesale & retail | 2024 |
| ALI320 Private Ltd | Wholesale & retail | 2021 |
| Aliance Associates Ltd. | Wholesale & retail | 2008 |
| Aliant Trade LP | | 2015 |
| Aliastra Trade LP | | 2013 |
| Alibateks Industries LP | | 2011 |
| Alicia K Coaching LP | | 2025 |