| AVE Property Advisory Limited | Real estate | 2024 |
| Avenir Properties Limited | Real estate | 2020 |
| Aventus Roofing Ltd | Construction | 2024 |
| Avenue Building Contractors Ltd | Construction | 2021 |
| Avenue Heating Ltd | Construction | 2017 |
| Avenue Property Services Group Ltd | Construction | 2025 |
| Avenues Veterinary Clinic Limited | Professional & scientific | 2020 |
| Averil Willow Ltd | Real estate | 2023 |
| Avexix Projects Ltd | Construction | 2026 |
| AVG Trade Ltd | Hospitality | 2020 |
| Aviano Barbershop Limited | Other services | 2018 |
| Aviation 88 Ltd | Wholesale & retail | 2019 |
| Aviation Anorak Limited | Professional & scientific | 2023 |
| Aviation Systems International Limited | Professional & scientific | 1996 |
| Avica UK Ltd | Wholesale & retail | 1999 |
| Avidfleet Management Limited | Professional & scientific | 1993 |
| Avidrone Consulting Ltd | Information & communication | 2021 |
| Aviha Foods Limited | Hospitality | 2011 |
| Avin Accountants Ltd | Professional & scientific | 2012 |
| Avin Financial Services Limited | Financial services | 2018 |
| Avisar Consultancy Limited | Professional & scientific | 2010 |
| AVL Professionals Ltd | Professional & scientific | 2022 |
| Avlx Ltd | Arts & recreation | 2021 |
| Avni Trading Limited | Wholesale & retail | 2017 |
| AVO (PVT) Limited | Wholesale & retail | 2025 |
| Avolare Group Limited | Financial services | 2026 |
| Avoncroft RTM Company Limited | Households | 2024 |
| Avonmoor Associates Limited | Professional & scientific | 1995 |
| Avorin Holdings Limited | Financial services | 2026 |
| Avorin Ltd | Information & communication | 2025 |
| AVS Consulting Limited | Professional & scientific | 2002 |
| AVS IT Consultants Limited | Professional & scientific | 2014 |
| AVS Secretaries Ltd | Administrative & support | 2003 |
| Avyagrah UK Ltd | Wholesale & retail | 2024 |
| AW Fluid Power Ltd | Professional & scientific | 2024 |
| Award Amenity Ltd | Construction | 2024 |
| Award Holdings Ltd | Construction | 2024 |
| Awardfare Limited | Construction | 1979 |
| AWC Consultancy Services Ltd | Information & communication | 2015 |
| AWC Financial Consulting Ltd | Other services | 2011 |
| Awesome Cleaning Services Limited | Administrative & support | 2021 |
| Awfm Sport Limited | Professional & scientific | 2021 |
| Awgb Trading Limited | Wholesale & retail | 2013 |
| Awiac Limited | Education | 2019 |
| AWT Trading Limited | Wholesale & retail | 1989 |
| AX3 Systems Ltd | Information & communication | 2014 |
| Axel Films Limited | Information & communication | 2018 |
| Axia Communications Limited | Wholesale & retail | 1997 |
| Axia Computer Services Limited | Wholesale & retail | 2001 |
| Axia Consortium Limited | Financial services | 2001 |
| Axia Consultancy Limited | Information & communication | 2001 |
| Axia Consultants Limited | Information & communication | 2022 |
| Axia Distribution Limited | Wholesale & retail | 1994 |
| Axia Electronics Limited | Manufacturing | 2021 |
| Axia Europe Limited | Wholesale & retail | 2004 |
| Axia Holdings Limited | Wholesale & retail | 1994 |
| Axia Information Systems Limited | Wholesale & retail | 2001 |
| Axia IT Business Solutions Limited | Wholesale & retail | 2005 |
| Axia IT Services Limited | Wholesale & retail | 2025 |
| Axia Limited | Wholesale & retail | 2005 |
| Axia Networks Limited | Information & communication | 2008 |
| Axia Property Limited | Real estate | 2022 |
| Axia Systems Limited | Wholesale & retail | 2009 |
| Axia Technology Limited | Wholesale & retail | 1995 |
| Axia Telecom Limited | Information & communication | 1998 |
| Axianet Limited | Wholesale & retail | 1999 |
| Axyon Ltd | Wholesale & retail | 2025 |
| AY80QS Limited | Professional & scientific | 2011 |
| Ayaanshi Limited | Administrative & support | 2020 |
| Ayan Electricians Limited | Construction | 2019 |
| Ayana Enterprise Ltd | Wholesale & retail | 2022 |
| Ayfle Housing Ltd | Real estate | 2024 |
| Aylesbury Building Energy Management Systems Ltd | Professional & scientific | 2016 |
| Aylesbury Space Ltd | Construction | 2018 |
| Aylos UK Limited | Information & communication | 2016 |
| AYM (UK) Ltd | Professional & scientific | 2010 |
| Aymari Ltd | Wholesale & retail | 2025 |
| Aynur Cengiz Limited | Hospitality | 2026 |
| Ayovigour Naturals Ltd | Wholesale & retail | 2024 |
| Ayra Consulting Limited | Professional & scientific | 2015 |
| Aysu Watford Ltd | Hospitality | 2025 |
| AYU Life Ltd | Wholesale & retail | 2024 |
| Ayub Resources Ltd | Other services | 2019 |
| Ayurspa Ltd | Information & communication | 2019 |
| Ayush Ayurveda and Yoga Therapy Center Ltd | Health & social care | 2016 |
| Ayvilik Hold Asset Ltd | Wholesale & retail | 2022 |
| Ayyan Properties Ltd | Real estate | 2025 |
| Ayyan Realty Ltd | Real estate | 2025 |
| AZ Haven Holdings Limited | Financial services | 2026 |
| AZ Haven Properties Limited | Real estate | 2025 |
| AZ Immigration Law Solutions Ltd | Professional & scientific | 2025 |
| AZ Investment Group Ltd | Financial services | 2024 |
| AZ Shams Limited | Real estate | 2024 |
| Azaelgoup Ltd | Information & communication | 2015 |
| Azaf Investment Ltd | Real estate | 2023 |
| Azaf Limited | Real estate | 2021 |
| Azalea Arch Properties Ltd | Real estate | 2019 |
| AZJ Properties Ltd | Real estate | 2024 |
| Azov Seeds Agrotrading LLP | | 2021 |
| Azra Consultancy Ltd | Professional & scientific | 2019 |