| AV Imperio Property Ltd | Real estate | 2024 |
| AV Industrial Ltd | Real estate | 2010 |
| AV Properties & Lettings Ltd | Real estate | 2024 |
| AV RX Ltd | Health & social care | 2018 |
| AV Ubique Holding Limited | Financial services | 2026 |
| AV Wealth Management Ltd | Financial services | 2025 |
| Av-Studio Ltd | Professional & scientific | 2019 |
| AV7 Holdings Ltd | Wholesale & retail | 2024 |
| AVA International Ltd | Wholesale & retail | 2021 |
| AVA Real Estates Limited | Real estate | 2022 |
| Avacend Solutions Ltd | Wholesale & retail | 2025 |
| Avad Properties Ltd | Real estate | 2020 |
| Avadh Bhumi Ltd | Real estate | 2025 |
| Avadkrupa Transport Ltd | Transport & logistics | 2025 |
| Avaish Holdings Limited | Real estate | 2026 |
| Avaish Wealth Management Limited | Financial services | 2023 |
| Avalana Food & Catering Limited | Hospitality | 2018 |
| Avalex Group Ltd | Other services | 2025 |
| Avalon Houseware Ltd | Wholesale & retail | 2022 |
| Avant Cars Ltd | Wholesale & retail | 2019 |
| Avante Living Ltd | Education | 2017 |
| Avantek Computer Limited | Information & communication | 1998 |
| Avantgarde Installations Limited | Construction | 2023 |
| Avantgarde Living Limited | Construction | 2026 |
| Avanti Financial Solutions Limited | Professional & scientific | 2013 |
| Avanti Foods Limited | Wholesale & retail | 2026 |
| Avanti Homes Ltd | Real estate | 2019 |
| Avanté Services Ltd | Information & communication | 2021 |
| Avaro (Midlands) Limited | Construction | 2010 |
| Avaro Investments Limited | Real estate | 2007 |
| Avarra Innovate Limited | Wholesale & retail | 2020 |
| Avarra Online Limited | Wholesale & retail | 2025 |
| Avatar Export Limited | Wholesale & retail | 2026 |
| Avatar Kitchen Limited | Hospitality | 2018 |
| Avatar Shropshire Limited | Hospitality | 2019 |
| Avatar Takeaway Limited | Hospitality | 2025 |
| Avatar Takeout Limited | Hospitality | 2019 |
| Avatari Ltd | Manufacturing | 2020 |
| AVB Enterprises Ltd | Health & social care | 2023 |
| AVC Lawn Care Ltd | Other services | 2018 |
| Avcochem UK Limited | Wholesale & retail | 2016 |
| Avcors Ltd | Construction | 2020 |
| AVD Enterprise Ltd | Manufacturing | 2017 |
| AVD Investments Ltd | Real estate | 2020 |
| AVD Millers Ltd | Real estate | 2025 |
| AVD Private Ltd | Manufacturing | 2026 |
| AVD Transport Ltd | Transport & logistics | 2018 |
| Avdhut Technologies Limited | Professional & scientific | 2024 |
| AVE Maria Portfolio Management Ltd | Real estate | 2021 |
| Avellana Property Ltd. | Real estate | 2004 |
| Avenfield Holdings Limited | Households | 2026 |
| Avens Properties Limited | Construction | 2023 |
| Aventus Home Improvements Ltd | Construction | 2024 |
| Aventus Investment Group Ltd | Professional & scientific | 2023 |
| Aventus Legal Services Ltd | Professional & scientific | 2025 |
| Aventus Motors Ltd | Wholesale & retail | 2023 |
| Aventus Property Group Ltd | Real estate | 2023 |
| Avenue Community Church Leicester | Other services | 2006 |
| AVENUE1 Ltd | Financial services | 2022 |
| Averil Tradings Ltd | Wholesale & retail | 2022 |
| Averion Solutions Ltd | Real estate | 2025 |
| Averley Equine Veterinary Services Limited | Professional & scientific | 2015 |
| Avertec Limited | Wholesale & retail | 2007 |
| Avery Douglas Ltd | Wholesale & retail | 2024 |
| Avery Jensen Wealth Limited | Financial services | 2023 |
| Aves Portfolio Management Ltd | Real estate | 2019 |
| Avesta Barber Supply Ltd | Wholesale & retail | 2023 |
| AVH Audio Visual Hire Limited | Manufacturing | 2008 |
| AVI Dhir Cars Limited | Wholesale & retail | 2012 |
| AVI Morjaria Estates Limited | Real estate | 2026 |
| Aviacare Limited | Professional & scientific | 2023 |
| Aviation Intelligence Limited | Information & communication | 2008 |
| Avicenna School | Education | 2025 |
| Avicenna Urological Ltd | Health & social care | 2019 |
| AVIG03 Limited | Financial services | 2024 |
| AVIG05 Limited | Financial services | 2025 |
| Avighna Limited | Real estate | 2025 |
| Avin Online Courses Ltd | Education | 2025 |
| Avin-Clinic Ltd | Other services | 2025 |
| Avinci Homes Ltd | Real estate | 2021 |
| Avinci Ltd | Wholesale & retail | 2013 |
| Avindale Ltd | Administrative & support | 2024 |
| Avinya Services Ltd | Professional & scientific | 2024 |
| Aviraj Limited | Other services | 2019 |
| Avis Medical Services Limited | Financial services | 2011 |
| Aviya Fashions Ltd | Manufacturing | 2019 |
| AVJ Healthcare Ltd | Health & social care | 2022 |
| AVJ Properties Ltd | Real estate | 2025 |
| Avka Limited | Wholesale & retail | 2009 |
| AVL Holdings Ltd | Professional & scientific | 2025 |
| AVM Mobiles & Service Ltd | Wholesale & retail | 2024 |
| Avni & Co Properties Ltd | Real estate | 2025 |
| Avni Saini Ltd | Hospitality | 2024 |
| Avnikh Restaurants Ltd | Hospitality | 2023 |
| Avocafix Ltd | Manufacturing | 2026 |
| Avoma Holdings Limited | Financial services | 2025 |
| Avoma Wealth Management Limited | Financial services | 2012 |
| Avon Holdings Limited | Real estate | 2026 |
| Avondale Enterprises Ltd | Wholesale & retail | 2025 |
| Avonmouth Energy Terminal Limited | Wholesale & retail | 2026 |