| Aamrd Limited | Wholesale & retail | 2021 |
| Aams Green Limited | Wholesale & retail | 2002 |
| Aams Trading Ltd | Wholesale & retail | 2026 |
| Aamu Halal Meat & Bakery Ltd | Wholesale & retail | 2025 |
| Aamy Properties Ltd | Real estate | 2019 |
| Aamys Properties Limited | Real estate | 2020 |
| AAN 11 Limited | Real estate | 2023 |
| AAN Advisory Group Ltd | Information & communication | 2025 |
| AAN Ecommerce Solutions Ltd | Wholesale & retail | 2026 |
| AAN Group UK Ltd | Hospitality | 2021 |
| AAN Logistic Ltd | Transport & logistics | 2020 |
| AAN Rendering Ltd | Construction | 2017 |
| Aana Cosmetics Ltd | Wholesale & retail | 2020 |
| Aana Labs Ltd | Information & communication | 2026 |
| Aanaa Ltd | Wholesale & retail | 2026 |
| Aanare Ltd | Hospitality | 2019 |
| Aancestr Limited | Hospitality | 2025 |
| Aanchor Consulting Ltd | Professional & scientific | 2024 |
| Aand Property Management Limited | Construction | 2021 |
| Aanda Recovery Ltd | Extraterritorial | 2018 |
| Aandawealthsolutions Ltd | Professional & scientific | 2025 |
| Aandostudio Projects Ltd | Professional & scientific | 2026 |
| Aandp Export-Import Ltd | Wholesale & retail | 2020 |
| Aandp Import and Export Ltd | Wholesale & retail | 2026 |
| Aanekcom Limited | Professional & scientific | 2025 |
| Aania Ltd | Manufacturing | 2026 |
| Aaniva Holdings Ltd | Wholesale & retail | 2026 |
| Aankhenlashes Ltd | Wholesale & retail | 2024 |
| Aankoopzaken Advies LLP | | 2026 |
| Aann Limited | Wholesale & retail | 2016 |
| Aans Globe Limited | Real estate | 2021 |
| Aanya Investments Limited | Real estate | 2016 |
| Aanya Linen Ltd | Wholesale & retail | 2025 |
| Aanya Property Development Ltd | Construction | 2015 |
| AAO Consultants Limited | Administrative & support | 2015 |
| AAO Management Ltd | Professional & scientific | 2022 |
| AAO Medical Consultancy Limited | Financial services | 2021 |
| AAO Properties & Investment Limited | Real estate | 2024 |
| AAO Properties Ltd | Real estate | 2022 |
| AAO Property Ltd | Real estate | 2024 |
| AAO Records Limited | Information & communication | 2025 |
| AAO Taxis Ltd | Transport & logistics | 2024 |
| AAO. AA Property Limited | Real estate | 2024 |
| Aaona Limited | Wholesale & retail | 2018 |
| Aaoo 254 44 1 Limited | Financial services | 2023 |
| Aaoutfitz Ltd | Wholesale & retail | 2024 |
| AAP Architecture Limited | Other services | 1999 |
| AAP Aviation Management UK Limited | Administrative & support | 2015 |
| AAP Aviation UK Limited | Administrative & support | 2017 |
| AAP CARE4LIFE | Education | 2013 |
| AAP Consulting Ltd | Professional & scientific | 2026 |
| AAP Developments Ltd | Administrative & support | 2008 |
| AAP Ecom Group Ltd | Wholesale & retail | 2025 |
| AAP Education Group Limited | Education | 2023 |
| AAP Education Limited | Education | 2012 |
| AAP Employee Ownership Trustee Ltd | Professional & scientific | 2023 |
| AAP Estates Ltd | Real estate | 2017 |
| AAP Group Holdings Ltd | Administrative & support | 2008 |
| AAP Group of Companies Limited | Administrative & support | 2014 |
| AAP Health Limited | Manufacturing | 2024 |
| AAP Housing Services Limited | Administrative & support | 2015 |
| AAP Maintenance Limited | Construction | 2003 |
| AAP Neptun Limited | Professional & scientific | 2016 |
| AAP Property Investments Ltd | Real estate | 2020 |
| AAP Security Ltd | Administrative & support | 2023 |
| AAP Trading Limited | Other services | 2018 |
| AAP Walworth Limited | Other services | 2022 |
| Aapc Lounge Services UK Limited | Hospitality | 2016 |
| Aapcollectables Limited | Wholesale & retail | 2026 |
| Aapd Group Ltd | Hospitality | 2019 |
| Aapex Wealth Management Ltd | Extraterritorial | 2017 |
| Aapg (Property) Limited | Real estate | 2016 |
| Aapg - Europe Trading Limited | Professional & scientific | 2009 |
| Aapg Investments UK Limited | Real estate | 2016 |
| Aapg-Europe | Administrative & support | 2008 |
| Aaph Trading Ltd | Real estate | 2018 |
| Aaprod Ltd | Information & communication | 2023 |
| Aapron Ltd | Wholesale & retail | 2022 |
| Aapse Ltd | Construction | 2025 |
| Aaqil Car Exports & Imports Ltd | Wholesale & retail | 2025 |
| Aaquatics Building Limited | Construction | 2024 |
| Aaquatics Clothing Limited | Manufacturing | 2024 |
| Aaquatics Limited | Education | 2019 |
| AAR BEV Ltd | Wholesale & retail | 2021 |
| AAR Catering Ltd | Hospitality | 2026 |
| AAR Cinematography Limited | Administrative & support | 2021 |
| AAR DE Services Ltd | Other services | 2025 |
| AAR EOT Trustee Limited | Professional & scientific | 2019 |
| AAR Global Motors Limited | Wholesale & retail | 2022 |
| AAR Holdings Limited | Professional & scientific | 1998 |
| AAR Kredifar Ltd | Manufacturing | 2025 |
| AAR Legacy Ltd | Health & social care | 2024 |
| AAR Limited | Information & communication | 2015 |
| AAR Merchandiser Ltd | Construction | 2017 |
| AAR Multimedia Ltd | Information & communication | 2024 |
| AAR NW11 Properties Limited | Real estate | 2024 |
| AAR Online Limited | Wholesale & retail | 2019 |
| AAR Project Controls Ltd | Professional & scientific | 2026 |
| AAR Property & Consultancy Ltd | Real estate | 2020 |
| AAR Services Limited | Professional & scientific | 1975 |