| Avdot Ltd | Cardiff | 2020 |
| AVE Actuaries and Consultants Ltd | London | 2022 |
| AVE Inc Ltd | Slough | 2025 |
| Aveat Group Limited | Braintree | 2023 |
| Aveb Ltd | Wirral | 2024 |
| Avebury Associates Limited | London | 2025 |
| Avebury Computing Holdings Limited | Chatham | 2013 |
| Avec Group Limited | Bedford | 2022 |
| Aveco Investments Limited | Banbury | 2016 |
| Aveera Capital Limited | Edgware | 2019 |
| Avega UK Services Limited | London | 2023 |
| Aveja Limited | Liverpool | 2025 |
| Avelar Ltd | Bedford | 2025 |
| Avelex Mortgages Ltd | London | 2014 |
| Aveley Lake Holdings Limited | Peterborough | 2022 |
| Aveline Holdings Ltd | Stourbridge | 2026 |
| Avelios Property Group Limited | London | 2021 |
| Avelis Group Limited | London | 2026 |
| Avella Ventures Limited | London | 2026 |
| Avellinia Capital Ltd | London | 2017 |
| Avellion Limited | Manchester | 2019 |
| Avelo Finance Limited | London | 2026 |
| Avelon Capital Limited | London | 2026 |
| Avelon X Ltd | London | 2025 |
| Aven Finance Group Ltd | Ely | 2026 |
| Aven Holdings Limited | Pinner | 2025 |
| Aven Mortgages Limited | Edinburgh | 2024 |
| Avena Group Ltd | Halifax | 2025 |
| Avena Holdings Limited | Dereham | 2023 |
| Avencura Limited | London | 2015 |
| Avendus Capital (UK) Private Limited | Newcastle Upon Tyne | 2008 |
| Avendus Capital Asset Management (UK) Limited | Newcastle Upon Tyne | 2017 |
| Avenel Advisory Limited | Edinburgh | 2026 |
| Avenham Group Ltd | Poulton-Le-Fylde | 2021 |
| Avenir Depositary Ltd | London | 2018 |
| Avenir Depositary Nominees Limited | London | 2020 |
| Avenir Early Years Group Limited | Bath | 2024 |
| Avenir Financial Solutions Ltd | Winscombe | 2013 |
| Avenir LNG (UK) Limited | London | 2020 |
| Avenir Registrars Group Ltd | London | 2022 |
| Avenir Supply and Trading Limited | London | 2020 |
| Avenir UK Limited | London | 2024 |
| Avenir Works Group Limited | Bradford | 2017 |
| Avenium Investments UK Ltd | London | 2021 |
| Avenor EN Ltd | London | 2025 |
| Avenora Limited | London | 2026 |
| Avenrix Capital Ltd | London | 2026 |
| Aventa Capital Partners Ltd | Cambridge | 2011 |
| Aventas Manufacturing Group Holdco Limited | Belfast | 2011 |
| Aventia Pharma Ltd | Smethwick | 2023 |
| Aventine Capital Limited | London | 2013 |
| Aventis Investments Limited | London | 2021 |
| Aventis Pharma Holdings Limited | Reading | 1999 |
| Aventra Funding Solutions Limited | London | 2025 |
| Aventria Property Limited | Bleadon | 2019 |
| Aventrum Ltd | London | 2025 |
| Aventum Group Limited | London | 2019 |
| Aventur Estate Planning Ltd | London | 2020 |
| Aventur Group Ltd | London | 2020 |
| Aventur Limited | Hayle | 2026 |
| Aventur Wealth Ltd | London | 2020 |
| Aventura Holdings Limited | London | 2024 |
| Aventura Trading Ltd | Dereham | 2025 |
| Aventurine Capital Investment Partners Limited | London | 2025 |
| Aventuris Management International (UK) Ltd | Southend-On-Sea | 2020 |
| Aventus Investment Limited | Birmingham | 2022 |
| Aventus MD Holdings Limited | Bolton | 2022 |
| Aventus Ventures Limited | London | 2025 |
| Avenue & Partners Ltd | Preston | 2022 |
| Avenue (North East) Limited | Sunderland | 2013 |
| Avenue and Co Property Finance Limited | London | 2018 |
| Avenue Capital Dubai Ltd | Stockport | 2023 |
| Avenue Commercial Limited | Morden | 2024 |
| Avenue Corporate Management Limited | London | 2010 |
| Avenue Employment Limited | Eastbourne | 2021 |
| Avenue England Ltd | London | 2006 |
| Avenue Financial Solutions Ltd | Chelmsford | 2019 |
| Avenue Group Holdings Limited | Wellingborough | 2026 |
| Avenue Insurance Partners Limited | High Wycombe | 2016 |
| Avenue J Capital Limited | London | 2012 |
| Avenue Mortgage Solutions Ltd | Wallington | 2017 |
| Avenue Partners Investments Ltd | London | 2021 |
| Avenue Pensions Limited | Sunbury-On-Thames | 2016 |
| Avenue Properties Development Ltd | London | 2024 |
| Avenue RD & Co Ltd | Hebden Bridge | 2025 |
| Avenue Wealth Management Limited | Gerrards Cross | 2020 |
| AVENUE1 Ltd | Leicester | 2022 |
| Avenues Holdings Limited | Berkhamsted | 2024 |
| Avenva Holdings Limited | Swadlincote | 2023 |
| Aveo Finance Limited | Cardiff | 2008 |
| Aveon Global Holding Limited | London | 2018 |
| Avepoint Holding Limited | London | 2015 |
| Aveq Investments Ltd | London | 2022 |
| Avere Capital Holdings Ltd | London | 2025 |
| Avere Commodities UK Limited | London | 2024 |
| Averge Bidco Limited | Chorley | 2023 |
| Avering Capital Ltd | London | 2021 |
| Averley Investments Limited | Newcastle Upon Tyne | 2023 |
| Averly Trading Limited | Cheltenham | 2025 |
| Averna Infrastructure Holdings Limited | Nantwich | 2025 |