| Aviemore Management Limited | Beckenham | 2009 |
| AVIG03 Limited | Leicester | 2024 |
| AVIG05 Limited | Leicester | 2025 |
| Avignon Group Holdings Limited | London | 2017 |
| Avignon Holdings Limited | Loughborough | 2025 |
| Avignon Limited | London | 2019 |
| Avila Holdings Limited | Bradford | 2015 |
| Avila Investments Ltd | London | 2021 |
| Avin Consulting Ltd | Colchester | 2020 |
| Avin Financial Services Limited | Watford | 2018 |
| Avinger Limited | Dungannon | 2015 |
| Avingstone Investments Limited | Addlestone | 2015 |
| Avingstone Limited | London | 2013 |
| Avington Financial Limited | London | 2005 |
| Avington Group Ltd | Esher | 2026 |
| Avinit Holdings Limited | Haywards Heath | 2022 |
| Aviocap (Holdings) Limited | London | 2020 |
| Avion Holdings Ltd | London | 2026 |
| Avione Lending Limited | Canterbury | 2022 |
| Avior Capital Markets International Limited | Moray | 1999 |
| Avior Financial Holdings Ltd | Ipswich | 2024 |
| Avip Group Limited | Stratford Upon Avon | 2006 |
| Avira Realty Limited | London | 2025 |
| Avis Global Energy Egypt Ltd | Harrow | 2022 |
| Avis Holdings Limited | Frome | 2024 |
| Avis Insurance Services Limited | Maidenhead | 1983 |
| Avis Medical Services Limited | Leicester | 2011 |
| Avis Property Investments Ltd | Wickford | 2023 |
| Avisant Holdings Ltd | London | 2021 |
| Avison Young Infrastructure Management Limited | Birmingham | 2000 |
| Avista Financial Planning Ltd | Ellesmere Port | 2013 |
| Avistone Limited | Egginton | 2009 |
| Avit Holdings Limited | Uxbridge | 2018 |
| Avitah Capital Services Limited | London | 2018 |
| Avitor Limited | Cardiff | 2007 |
| Avitrius Group Holdings Limited | Cheltenham | 2026 |
| Avitus Holding Limited | Towcester | 2020 |
| Avitus International Limited | Llanelli | 2019 |
| Avium Financial Limited | Swansea | 2023 |
| Aviva Capital Partners Limited | London | 2022 |
| Aviva Credit Services UK Limited | Norwich | 1922 |
| Aviva Equity Release UK Limited | York | 1996 |
| Aviva Erfa 15 UK Limited | York | 2008 |
| Aviva Europe UK Societas | London | 2011 |
| Aviva Health UK Limited | | 1990 |
| Aviva Insurance Limited | | 1891 |
| Aviva International Insurance Limited | London | 1885 |
| Aviva Investment Solutions UK Limited | York | 2007 |
| Aviva Investors (GP) Scotland Limited | | 2008 |
| Aviva Investors Climate Transition GBP Real Estate General Partner Limited | Perth | 2021 |
| Aviva Investors Commercial Assets GP Limited | London | 2011 |
| Aviva Investors CTF Holdco 1 Limited | London | 2021 |
| Aviva Investors CTF Infrastructure Midco 1 Limited | London | 2022 |
| Aviva Investors Energy Centres NO.1 GP Limited | London | 2012 |
| Aviva Investors Global Services Limited | London | 1973 |
| Aviva Investors Ground Rent GP Limited | London | 2011 |
| Aviva Investors Ground Rent Holdco Limited | London | 2011 |
| Aviva Investors Holdings Limited | London | 1986 |
| Aviva Investors Infrastructure GP Limited | London | 2011 |
| Aviva Investors Infrastructure Income B Limited | London | 2019 |
| Aviva Investors Infrastructure Income C Limited | London | 2018 |
| Aviva Investors Infrastructure Income C NO.4E Limited | London | 2019 |
| Aviva Investors Infrastructure Income C NO.4F Limited | London | 2019 |
| Aviva Investors Infrastructure Income M Limited | London | 2018 |
| Aviva Investors Infrastructure Income M NO.4C Limited | London | 2019 |
| Aviva Investors Infrastructure Income M NO.4D Limited | London | 2019 |
| Aviva Investors Infrastructure Income NO.1 Limited | London | 2012 |
| Aviva Investors Infrastructure Income NO.2 Limited | London | 2015 |
| Aviva Investors Infrastructure Income NO.2B Limited | London | 2017 |
| Aviva Investors Infrastructure Income NO.3 Limited | London | 2015 |
| Aviva Investors Infrastructure Income NO.3B Limited | London | 2018 |
| Aviva Investors Infrastructure Income NO.4A Limited | London | 2015 |
| Aviva Investors Infrastructure Income NO.4B Limited | London | 2015 |
| Aviva Investors Infrastructure Income NO.5 Limited | London | 2016 |
| Aviva Investors Infrastructure Income NO.6 Limited | London | 2017 |
| Aviva Investors Infrastructure Income NO.6B Limited | London | 2018 |
| Aviva Investors Infrastructure Income NO.6B1 Limited | London | 2021 |
| Aviva Investors Infrastructure Income NO.6D Limited | London | 2024 |
| Aviva Investors Infrastructure Income NO.7 Limited | London | 2019 |
| Aviva Investors Infrastructure Income NO.8 Limited | London | 2018 |
| Aviva Investors Pensions Limited | Manchester | 1972 |
| Aviva Investors PIP Solar PV (General Partner) Limited | London | 2015 |
| Aviva Investors PIP Solar PV NO.1 Limited | London | 2015 |
| Aviva Investors Real Estate Limited | London | 2006 |
| Aviva Investors Realtaf Holdco Limited | London | 2023 |
| Aviva Investors Secure Income Reit Limited | London | 2017 |
| Aviva Investors Social Housing GP Limited | London | 2011 |
| Aviva Investors UK Cresd GP Limited | London | 2013 |
| Aviva Investors UK Fund Services Limited | London | 1985 |
| Aviva Life & Pensions UK Limited | York | 1996 |
| Aviva Life Investments International (General Partner) Limited | York | 2009 |
| Aviva Life Investments International (Recovery) Limited | York | 1986 |
| Aviva Pension Trustees UK Limited | York | 1989 |
| Aviva Protection UK Limited | York | 2007 |
| Aviva Savings Limited | York | 2002 |
| Aviva Special PFI GP Limited | London | 2012 |
| Aviva Trustees UK Limited | York | 2014 |
| Aviva UK Digital Limited | Norwich | 2015 |
| Aviva Uklap De-Risking Limited | York | 1998 |
| Aviva Wealth Holdings UK Limited | York | 2009 |