| Avivco Developments Limited | London | 2017 |
| Avixor Limited | Llandudno | 2026 |
| Aviyah & Co. Ltd | London | 2025 |
| Aviyon Finance Ltd | Gateshead | 2020 |
| AVJ Enterprises Limited | London | 2024 |
| AVJ Independent Financial Advice Ltd | Peterborough | 2010 |
| AVK Group Ltd | Billericay | 2021 |
| AVK Group Services Limited | Maidenhead | 2026 |
| AVL Group Holdings Ltd | London | 2026 |
| AVL Holdings and Investments Ltd | Dudley | 2024 |
| AVL Smile Holdings Ltd | Abingdon | 2025 |
| Avlar Limited | Cambridge | 1998 |
| Avlon Leisure Limited | Boston | 2023 |
| AVM Logistics Holdings Limited | Cheltenham | 2014 |
| AVM Solutions Limited | Cambridge | 2007 |
| Avmk Commercial Finance Ltd | Caterham | 2025 |
| Avmoric Limited | Edinburgh | 2021 |
| AVN Capital Ltd | Surrey | 2019 |
| AVN Holding Ltd | Birmingham | 2020 |
| AVN9 Limited | Windsor | 2016 |
| AVO Holdings Limited | Hungerford | 2024 |
| Avoca Capital Holdings Ltd | Liskeard | 2022 |
| Avoca Holdings Limited | Wallington | 2016 |
| Avoca Park Holdings Limited | Ipswich | 2019 |
| Avoca Wealth Management Ltd | Glasgow | 2020 |
| Avocado Capital Limited | Purley | 2022 |
| Avocado Tree Holdings Ltd | Clitheroe | 2021 |
| Avocet 66 Limited | London | 2017 |
| Avocet Associates Ltd | Mexborough | 2023 |
| Avocet Group Holdings Limited | Manchester | 2025 |
| Avocet Insurance Consultants Ltd | Whitstable | 2020 |
| Avocet Investments Limited | Amersham | 1987 |
| Avocet Materials Holdings Limited | Holmes Chapel | 2023 |
| Avocet Risk Management Limited | Whitstable | 2011 |
| Avocet Scarborough Holdings Limited | Scarborough | 2018 |
| Avocet Ventures Ltd | Ottery St. Mary | 2025 |
| Avocet Wealth Partnership Ltd | Exmouth | 2020 |
| Avocom Law Firm Holding Ltd | London | 2023 |
| Avolare Group Limited | Watford | 2026 |
| Avolon Aerospace UK 5 Limited | London | 2013 |
| Avolta Corporate Finance Limited | London | 2016 |
| Avoma Holdings Limited | Leicester | 2025 |
| Avoma Wealth Management Limited | Leicester | 2012 |
| Avon (Midlands) Limited | Warwick | 2018 |
| Avon Armour (Holdings) Limited | Bristol | 1990 |
| Avon Capital Estates 2 Holdings Ltd | Alresford | 2024 |
| Avon Capital Estates 3 Holdings Ltd | Alresford | 2024 |
| Avon Capital Estates 3 Ltd | Alresford | 2024 |
| Avon Commercial Finance (UK) Limited | Warwickshire | 2002 |
| Avon Commercial Limited | Teddington | 1992 |
| Avon Family Limited | London | 2018 |
| Avon Finance NO.3 Holdings Limited | London | 2023 |
| Avon Finance NO.3 PLC | London | 2023 |
| Avon Finance NO.4 Holdings Limited | London | 2023 |
| Avon Finance NO.4 PLC | London | 2023 |
| Avon Finance NO.6 Holdings Limited | London | 2026 |
| Avon Finance NO.6 PLC | London | 2026 |
| Avon Insurance PLC | Stratford Upon Avon | 1925 |
| Avon International Limited | Birmingham | 2025 |
| Avon Investment Strategies Ltd | Tewkesbury | 2025 |
| Avon Joinery Holdings Limited | Rugby | 2019 |
| Avon Mappi Group Ltd | Eastbourne | 2025 |
| Avon Marina Holdings Limited | Lymington | 2019 |
| Avon Material Supplies (Holdings) Limited | Wimborne | 2012 |
| Avon Pension Administration Ltd | Bristol | 2014 |
| Avon Summit Ltd | Coventry | 2023 |
| Avon Timber (Holdings) Limited | Coventry | 2002 |
| Avonbar Holdings Limited | High Wycombe | 2021 |
| Avonbridge Holdings Limited | Bristol | 2020 |
| Avondale Financial Ltd | Chesham | 1997 |
| Avondale Investment Management Limited | Canterbury | 2011 |
| Avondale Living Ltd | Wembley | 2025 |
| Avondale UK Holdings Limited | London | 2024 |
| Avondene Holdings Limited | London | 2025 |
| Avongard Holdings Limited | Stratford-Upon-Avon | 2016 |
| Avonhurst Investment Brokers Limited | Leamington Spa | 2000 |
| Avonloe Limited | London | 2016 |
| Avonmark Limited | | 1988 |
| Avonmore Developments Limited | London | 1999 |
| Avonmore Property Ltd | Cambridge | 2020 |
| Avonsand Management Holdings Limited | London | 2016 |
| Avonside Carpentry & Glazing Ltd | Stratford-Upon-Avon | 2021 |
| Avonside Energy Holdings Limited | London | 2020 |
| Avonvale Holdings Limited | Evesham | 2021 |
| Avonview Capital Ltd | Edinburgh | 2025 |
| Avord Holdings Limited | Shepperton | 2024 |
| Avorin Holdings Limited | Watford | 2026 |
| Avory Holdings Limited | Waterlooville | 2013 |
| AVP Asset Value Partners Limited | Cardiff | 2015 |
| AVP Global Holdings Limited | London | 2025 |
| AVP Group Ltd | London | 2024 |
| AVP Platform Holdco (UK) Limited | London | 2024 |
| Avpm Group Limited | Wokingham | 2023 |
| AVR Holdings Group Ltd | Hertfordshire | 2025 |
| AVR Holdings Ltd | Pinner | 2022 |
| AVR Photonics Group Limited | Huntingdon | 2021 |
| Avra Bidco Limited | London | 2025 |
| Avra Capital Partners Ltd | Kenilworth | 2024 |
| Avra Finance Ltd | London | 2019 |
| Avrac (NO 1) Limited | Manchester | 2022 |