| Aveni Aesthetics Ltd | Peterborough | 2024 |
| Avenida Salon Limited | London | 2018 |
| Avenir (UK) Public Welfare Foundation Limited | London | 2024 |
| Avenir Energy Ltd | Devizes | 2015 |
| Avenleigh Group Ltd | London | 2025 |
| Avensis Support Limited | Bradford | 2017 |
| Aventido Limited | Altrincham | 2017 |
| Aventier Holding Limited | Leigh-On-Sea | 2017 |
| Aventier Limited | Leigh-On-Sea | 2016 |
| Aventis Consultancy Ltd | Dumbarton | 2025 |
| Aventre Media Ltd | London | 2017 |
| Aventti Beauty Limited | London | 2021 |
| Aventure Investments Limited | Blackburn | 2015 |
| Aventureen Ltd | Bury St. Edmunds | 2026 |
| Aventurine Climate Dargavel Ltd | Gateshead | 2025 |
| Aventurine Climate Ltd | Gateshead | 2025 |
| Aventuristin Ltd | London | 2025 |
| Aventus Diamond Holdings Ltd | Glasgow | 2024 |
| Aventus Grooming Ltd | London | 2022 |
| Aventus Properties Ltd | Normanton | 2015 |
| Avenue & Co (York) Limited | Malton | 2022 |
| Avenue 23 Ltd | Torphins | 2022 |
| Avenue Aesthetics Limited | Sunbury-On-Thames | 2020 |
| Avenue Barbering & Male Image Limited | Bedlington | 2022 |
| Avenue Beauty Ltd | Liverpool | 2021 |
| Avenue Boutique Hair & Beauty Ltd | Bingley | 2015 |
| Avenue Community Church Leicester | Leicester | 2006 |
| Avenue Confidential | Aberdeen | 1999 |
| Avenue Hair by M & L Ltd | Kendal | 2022 |
| Avenue HQ Leeds Limited | Liverpool | 2017 |
| Avenue Medispa Limited | Havant | 2003 |
| Avenue Nails Limited | Edinburgh | 2019 |
| Avenue Partners Limited | London | 2020 |
| Avenue Plumbing and Heating Ltd | Cardiff | 2024 |
| Avenue Real Estate Limited | Bradford | 2020 |
| Avenue Recruitment Group Ltd | Leigh On Sea | 2024 |
| Avenue Studio Hair and Beauty Ltd | | 2005 |
| Avenue Tree Care Ltd | Leatherhead | 2024 |
| Avenues Dating Limited | Alcester | 2014 |
| Avenues One Ltd | Polegate | 2019 |
| Aver Resources Ltd | Worcester | 2023 |
| Avera Beauty Limited | Southend-On-Sea | 2025 |
| Average Joe's Barbers Limited | Birmingham | 2017 |
| Averil Phillips & Family Limited | Kettering | 1999 |
| Averist Ltd | St. Helens | 2018 |
| Averlle Ltd | Chatham | 2025 |
| Averon ORD Family Investments | Edinburgh | 2025 |
| Averose Consultancy Limited | Huddersfield | 2013 |
| Averra Accounting & Financial Consulting Ltd | Manchester | 2021 |
| Averro Capital Ltd | Harrow | 2020 |
| Averroes Design Limited | Bradford | 2007 |
| Avers Consultancy Ltd | Solihull | 2019 |
| Aversio Ltd | London | 2019 |
| Averstones Limited | London | 1981 |
| Averstor Ltd | London | 2025 |
| Avery Concepts (Scotland) Ltd. | Alloa | 2017 |
| Avery Hill Charitable Trust | Sidcup | 2004 |
| Avery Payroll and Support Services Limited | London | 2021 |
| Avery ROW Capital Services (UK) Ltd | Tonbridge | 2016 |
| Avery Surveys Limited | Liverpool | 2004 |
| Aves Accounting Limited | Cambridge | 2020 |
| Aves Aesthetics Ltd | Belper | 2016 |
| Avesta Hair Ltd | Salford | 2021 |
| Avesta Supermarket Limited | London | 2014 |
| Avesta Zend Ltd | London | 2018 |
| AVF Coaching Ltd | London | 2025 |
| Avfx Limited | Kilmacolm | 2011 |
| AVG Capital Ltd | Friern Barnet | 2021 |
| AVH Hair Ltd | Sheffield | 2026 |
| AVI Group Solutions Ltd | London | 2025 |
| AVI Midland Ltd | Tamworth | 2026 |
| AVI Swap Ltd | Belfast | 2025 |
| Avi's Hand Car Wash Ltd | Leeds | 2021 |
| Avi@Sbraids Limited | Catterick Garrison | 2022 |
| Avia Car Wash Limited | Swindon | 2016 |
| Avia Nails Art Limited | Manchester | 2025 |
| Avia Skin Clinic Ltd | London | 2025 |
| Aviagen Turkeys (Pension Trustee) Limited | Chester | 2022 |
| Avian Conservancy Ltd | Hull | 2025 |
| Avian Environmental UK Ltd | Peterborough | 2023 |
| Aviano Barbershop Limited | Watford | 2018 |
| Aviari Ltd | Lichfield | 2022 |
| Aviate Management Limited | Ellesmere Port | 2008 |
| Aviatech Consultants Limited | Carlisle | 2012 |
| Aviateq International Limited | Maidenhead | 2003 |
| Aviation and Retail Management Ltd. | Wokingham | 1997 |
| Aviation Carbon Events Ltd | London | 2011 |
| Aviation Chauffeurs Ltd | Iver | 2011 |
| Aviation Consultants Ltd | Leeds | 2021 |
| Aviation Creations Limited | Rutland | 1998 |
| Aviation Music Limited | Milton Keynes | 1978 |
| Aviation Network Golf Limited | Burgate | 2025 |
| Aviation Network Group Ltd | Fordingbridge | 2022 |
| Aviation Oasis Ltd | Basingstoke | 2024 |
| Aviation Partners Africa Limited | London | 2018 |
| Aviation Recruitment & Referencing Ltd | Ashby-De-La-Zouch | 2020 |
| Aviation Services UK (Trade Association) Ltd | London | 2023 |
| Aviation TS Ltd | Caistor | 2025 |
| Aviation Welding Services Limited | Arnold | 2006 |
| Aviation Winner Limited | Hildenborough | 2024 |