| Axis Global Supplies Ltd | Wholesale & retail | 2025 |
| Axis Investment Group LP | | 2016 |
| Axis Smart Entrances Ltd | Wholesale & retail | 2026 |
| Axis Tech Ltd | Information & communication | 2025 |
| Axisway Ltd | Information & communication | 2023 |
| Axivium Ltd | Information & communication | 2025 |
| Axle Mobility Limited | Hospitality | 2023 |
| Axley Business LP | | 2015 |
| Axley Capital LP | | 2012 |
| Axley Commerce LP | | 2015 |
| Axley Ventures LP | | 2015 |
| Axom Impacts LP | | 2015 |
| Axom Management LP | | 2015 |
| Axtan Trade LP | | 2011 |
| Axtor Corporation LP | | 2015 |
| AY DEE KAY Limited | Manufacturing | 2014 |
| Ayaan Rugs Ltd | Wholesale & retail | 2023 |
| Ayaans Motor Limited | Wholesale & retail | 2019 |
| AYE SPY Media Ltd | Professional & scientific | 2025 |
| Ayephone Ltd | Wholesale & retail | 2026 |
| Ayesha Travel Ltd | Wholesale & retail | 2024 |
| Ayeshopping Ltd | Real estate | 2010 |
| Aygate Trading L.P. | | 2019 |
| Ayham S Ltd | Wholesale & retail | 2025 |
| Ayin Investment LP | | 2015 |
| Ayina LP | | 2015 |
| Aykiz Creations Limited | Wholesale & retail | 2022 |
| Ayla Compliance Limited | Professional & scientific | 2022 |
| Ayle Ltd | Wholesale & retail | 2026 |
| AYM Management Ltd | Extraterritorial | 2012 |
| Aymis Trading LP | | 2017 |
| Aympek Ltd | Extraterritorial | 2012 |
| Aymunify Limited | Wholesale & retail | 2023 |
| Aynetree Guesthouse Ltd | Hospitality | 2020 |
| Ayoc Advisory Ltd | Professional & scientific | 2026 |
| Ayokayp Property Ltd | Real estate | 2025 |
| Ayon Partners LP | | 2018 |
| Ayratex LP | | 2015 |
| Ayren Honey Fitness Ltd | Other services | 2024 |
| Ayres Wynd Developments Limited | Construction | 2019 |
| Ayrframe Limited | Manufacturing | 1998 |
| Ayrshire College Foundation | Health & social care | 2013 |
| Ayrshire Hospitals Limited | Health & social care | 2003 |
| Ayrshire Metal Pension Trust Limited | Manufacturing | 1971 |
| Ayrshire Metal Products (Daventry) Limited | Manufacturing | 1944 |
| Ayrshire Metal Products Public Limited Company | Manufacturing | 1907 |
| Ayrshire Structural Consulting Ltd | Professional & scientific | 2024 |
| Ayrshire Trade LP | | 2017 |
| Ayrshire Utilities Limited | Information & communication | 2016 |
| Ayton Business Services LP | | 2014 |
| Ayton Capital LLP | | 2025 |
| Ayunari Active Ltd | Wholesale & retail | 2025 |
| Ayvan Foods Ltd | Hospitality | 2026 |
| AZ ENG Ltd | Professional & scientific | 2018 |
| AZ Fixing Ltd | Administrative & support | 2021 |
| AZ Supply Services LP | | 2016 |
| AZ Trade LP | | 2018 |
| Az.R.Oil LP | | 2014 |
| Azacus Cyber Security Ltd | Information & communication | 2018 |
| Azad Pharma Ltd | Health & social care | 2022 |
| Azalea Garden Services Ltd | Administrative & support | 2026 |
| Azam Khan Limited | Administrative & support | 2022 |
| Azam Motors Ltd | Transport & logistics | 2019 |
| Azan Barber Ltd | Other services | 2025 |
| Azas Kitchen Ltd | Hospitality | 2018 |
| AZB Selva Consulting Limited | Professional & scientific | 2020 |
| Azcons Legacy Trading Ltd | Wholesale & retail | 2024 |
| AZE Management Limited | Extraterritorial | 2012 |
| Azencho Limited | Professional & scientific | 2021 |
| Azera Clothing Group Limited | Wholesale & retail | 2026 |
| AZH Motors Ltd | Transport & logistics | 2025 |
| Aziasugar L.P. | | 2012 |
| Azini 1 | | 2007 |
| Azini 1 (FP) | | 2007 |
| Azini 2 (FP) LP | | 2010 |
| Azini 2 (GP) LP | | 2010 |
| Azini 3 (FP) Limited | Financial services | 2013 |
| Azini 3 (FP) LP | | 2013 |
| Azini 3 (GP) LP | | 2013 |
| Azitech Electrical & Maintenance Ltd | Manufacturing | 2025 |
| Aziz Sheikh Ltd | Health & social care | 2019 |
| Azko Trading LP | | 2015 |
| AZM Trading Ltd | Wholesale & retail | 2018 |
| Azon Bros LP | | 2017 |
| Azor Alliance LP | | 2017 |
| Azper Partners | | 2001 |
| Azrex Marketing Ltd | Wholesale & retail | 2025 |
| Azul Properties Ltd | Real estate | 2026 |
| Azure Line LP | | 2015 |
| Azure Link Digital Limited | Administrative & support | 2025 |
| Azure Sails LP | | 2017 |
| Azurite LP | | 2011 |
| Azzocor Research Centre Ltd | Professional & scientific | 2020 |
| Azzurra & Co. Capital LP | | 2007 |
| Azzurra Group Limited | Wholesale & retail | 2024 |
| Azzurre Carry Scot LP | | 2020 |
| Azzurro (Consultants) Limited | Other services | 2006 |
| B & D Roofing Limited | Construction | 2011 |
| B & G S Landa Limited | Wholesale & retail | 2003 |
| B & H Surveying Services Limited | Professional & scientific | 2006 |