| Avamore Construction Finance Limited | London | 2022 |
| Avamore Development Finance 1 Limited | London | 2021 |
| Avamore Finance 1 Limited | Southend-On-Sea | 2018 |
| Avamore Specialist Finance 1 Ltd | London | 2022 |
| Avamount Limited | London | 1998 |
| Avan Care (Holdings) Ltd | Cardiff | 2025 |
| Avana Resources Limited | Greenhithe | 2024 |
| Avanati Investments Limited | London | 2024 |
| Avance Aqua Ltd | Horsham | 2023 |
| Avance Bloodstock UK Ltd | Newmarket | 2026 |
| Avance Group Holdings Ltd | Manchester | 2026 |
| Avancer Holdings Limited | Redditch | 2018 |
| Avandra Holdings Ltd | Canterbury | 2025 |
| Avanir Group Ltd | Chatham | 2026 |
| Avano Limited | Loughborough | 2014 |
| Avansim International (Holdings) Limited | Brentwood | 2019 |
| Avant Electronics Group Ltd | Stowmarket | 2023 |
| Avant Garde Capital Ltd | London | 2025 |
| Avant Intelligence Ltd | London | 2024 |
| Avant Investments Ltd | Bolton | 2017 |
| Avant UK Buyer Limited | London | 2024 |
| Avant-Garde Financial Advice Limited | Ashford | 2004 |
| Avanta UK Holdings Limited | Leeds | 2021 |
| Avante Financial Ltd | Burton-On-Trent | 2024 |
| Avante Holdings Limited | Moreton-In-Marsh | 2020 |
| Avantech Holdings Limited | Rugeley | 2025 |
| Avanterra Holdings Ltd | Hitchin | 2025 |
| Avantgarde Holdings Ltd | Bury St. Edmunds | 2026 |
| Avanti 2.0 Limited | London | 2025 |
| Avanti Communications Africa Infrastructure 1 Limited | London | 2016 |
| Avanti Communications Africa Infrastructure 2 Limited | London | 2016 |
| Avanti Financial Planning Limited | Caterham | 2023 |
| Avanti Homecare (Holdings) Limited | Nottingham | 2020 |
| Avanti Investments Ltd | Bristol | 2025 |
| Avanti Optical Limited | Greenford | 2024 |
| Avanti Wealth Management Limited | London | 2010 |
| Avanti West Midlands Limited | Brierley Hill | 2014 |
| Avantia Group Limited | New Malden | 2021 |
| Avantia Insurance Limited | New Malden | 2002 |
| Avantigo Capital Ltd | London | 2026 |
| Avantis Capital Ltd | London | 2017 |
| Avantis Consulting Group Limited | Cirencester | 2023 |
| Avantis Education Group Limited | Quedgeley | 2022 |
| Avantis Group Holdings Limited | Rugeley | 2025 |
| Avantis Group Topco Limited | Cardiff | 2024 |
| Avantis Property Group Ltd | Stalybridge | 2026 |
| Avantis Wealth Ltd | London | 2012 |
| Avantogen Holdings Ltd | Hemel Hempstead | 2017 |
| Avanton Richmond Developments Hold Co Limited | London | 2024 |
| Avantor Holdings Limited | Lutterworth | 2020 |
| Avantulo Ltd | London | 2019 |
| Avantus Business Solutions Limited | Reading | 2005 |
| Avanty Capital Limited | London | 2025 |
| Avantys Ltd | Barton On Sea | 2010 |
| Avanza Investments Limited | St Albans | 2025 |
| Avanzare Holdings Ltd | Shrewsbury | 2022 |
| Avar Global Ltd | London | 2025 |
| Avara Capital Limited | Bushey | 2026 |
| Avara Foods Holdings Limited | Brackley | 2017 |
| Avara Holdings Ltd | London | 2016 |
| Avara International Holdings Ltd | London | 2016 |
| Avara International Ltd | London | 2016 |
| Avara Pharma Services Ltd | London | 2016 |
| Avardo Solutions Limited | Poole | 2017 |
| Avari Capital Holdings Ltd | Northwood Hills | 2026 |
| Avarice Limited | Bristol | 2013 |
| Avaris Carry Ltd | London | 2025 |
| Avaris Group Holdings Ltd | London | 2025 |
| Avaris Group Ltd | London | 2025 |
| Avaris UK Societas | Ilford | 2012 |
| Avark Group Ltd | London | 2025 |
| Avarum Investments Limited | St. Neots | 2021 |
| Avas Holdings Limited | London | 2020 |
| Avatan Holdings Limited | North Harrow | 2019 |
| Avatar Care Group Limited | Birmingham | 2021 |
| Avatar Holdings Ltd | London | 2021 |
| Avatar International Group Holdings Limited | Alsager | 2024 |
| Avatar MGA Ltd | London | 2024 |
| Avatara Inc Ltd | Barnet | 2018 |
| Avathan Mortgages Limited | Rochester | 2019 |
| Avatrek Holding Ltd | Stafford | 2024 |
| Avatrex Ltd | London | 2022 |
| Avatter Ltd | Honiton | 2024 |
| Avature Group Limited | London | 2020 |
| Avaustin Holdings Limited | Maldon | 2025 |
| Avaya International Holdings Ltd | London | 2018 |
| Avayler Holdings Limited | Redditch | 2023 |
| AVC Capital Ltd | Essex | 2022 |
| AVC Group Limited | Poole | 2015 |
| AVC Health Ltd | Addlestone | 2024 |
| AVC Living Holdings Ltd | Derby | 2025 |
| Avcap Specialty Finance SPV IV Ltd | London | 2021 |
| Avco Trust | London | 1962 |
| Avcora Invest Limited | London | 2020 |
| AVD Financial Services Ltd | Darlington | 2026 |
| AVD Holding Group Ltd | Darlington | 2025 |
| AVD Holdings Limited | Wickford | 2018 |
| AVD Portfolio Ltd | Barnet | 2020 |
| Avdime Limited | Woodford Green | 2013 |
| Avdimou Holdings Limited | Canterbury | 2020 |