| AV Film and Design Limited | Ammanford | 2016 |
| AV Furniture Installations Ltd | Bridgwater | 2024 |
| AV Industrial Products Limited | Wigston | 2000 |
| AV Innovate Limited | Liverpool | 2002 |
| AV Interiors Ltd | Bedford | 2022 |
| AV Internal Ltd | Ashton-Under-Lyne | 2024 |
| AV Irrigation Limited | Ripon | 2012 |
| AV Joinery Ltd | Romford | 2026 |
| AV Liftco Ltd | London | 2019 |
| AV Machine Tool Support Limited | Sheffield | 2013 |
| AV Mech Ltd | Solihull | 2023 |
| AV Metals Limited | Bury | 2010 |
| AV Mounts UK Ltd | Chandlers Ford | 2006 |
| AV Niche (Recording Systems) Limited | Basildon | 1995 |
| AV Pipework Services Ltd | Telford | 2025 |
| AV Professionals Ltd | Iver | 2013 |
| AV Realty Ltd | London | 2020 |
| AV Refrigeration Ltd | Dunstable | 2023 |
| AV Rooms Ltd | Dalkeith | 2013 |
| AV Systems Services Ltd | Beckenham | 2023 |
| AV UK Foods Ltd | Tipton | 2024 |
| AV Wardrobes Limited | Bristol | 2021 |
| AV Window and Door Group Limited | Caldicot | 2026 |
| Av&M Engineering Limited | Salisbury | 2019 |
| Av-Au Limited | Lightwater | 2017 |
| Av-Sim Limited | Bournemouth | 2025 |
| Av.Engineering Ltd | London | 2023 |
| AV01 Ltd | Swanley | 2016 |
| AV8 Composite Ltd | Caerphilly | 2019 |
| AV8 Leather Repair Limited | London | 2023 |
| AV8 Solutions Ltd | Coventry | 2025 |
| AV8 Technical Solutions Limited | Glasgow | 2014 |
| AVA Designs Ltd | Blackburn | 2020 |
| AVA Estell Ltd | Hollinwood | 2020 |
| AVA Foods Limited | London | 2019 |
| AVA Knit (G.B.) Limited | Hinckley | 1971 |
| AVA Premium Foods Ltd | Hull | 2025 |
| AVA Special Steels Limited | Ledbury | 2021 |
| Ava-Matic (U.K.) Limited | Redditch | 1988 |
| Avaantony Limited | Fareham | 2025 |
| Avacare Limited | Letchworth | 2016 |
| Avace Limited | Brierley Hill | 2008 |
| Avad Group Limited | Northolt Industrial Estate | 1979 |
| Avado Limited | Thatcham | 2012 |
| Avadrone Ltd | Dunbar | 2026 |
| Avag Electrical Services Ltd | London | 2026 |
| Avahaven Limited | Hampton Hill | 1990 |
| Aval Manufacturers and Distributes PVT Ltd | Harrow | 2019 |
| Avalanche Electronic Solutions Limited | Fareham | 2014 |
| Avalon Aero Engineering Services Limited | Bedford | 2019 |
| Avalon Aero Limited | Bedford | 2000 |
| Avalon Airships Ltd | Altrincham | 2017 |
| Avalon Artificial Intelligence Limited | London | 2021 |
| Avalon Aviation Ltd | Gillingham | 2025 |
| Avalon Bespoke Services Limited | Sheffield | 2015 |
| Avalon Blinds Limited | Twemlow | 2004 |
| Avalon Casting Ltd | Bembridge | 2021 |
| Avalon Chrome Techniques Limited | Launceston | 1999 |
| Avalon Contracting Services Ltd | Ottery St. Mary | 2017 |
| Avalon Defence Systems Limited | Poole | 2025 |
| Avalon Design Lighting Limited | Bourne | 2004 |
| Avalon Developments (Royton) Limited | Oldham | 2016 |
| Avalon Distillery Company Ltd | Sherborne | 2015 |
| Avalon Electronics Limited | Bath | 1998 |
| Avalon Engineering Limited | Alcester | 2020 |
| Avalon Fibres Ltd | Glastonbury | 2026 |
| Avalon Foundries Limited | Cranbrook | 2025 |
| Avalon Guitars Limited | Newtownards | 2024 |
| Avalon Kicks Ltd | Retford | 2019 |
| Avalon Metal Coatings Limited | Milton Keynes | 2014 |
| Avalon Microwave Limited | Axbridge | 2024 |
| Avalon Plastics Limited | Glastonbury | 2003 |
| Avalon Printing Co (UK) Limited | Barnham | 1991 |
| Avalon Sciences Limited | Somerton | 1987 |
| Avalon Space Infrastructure and Services Ltd | Norfolk | 2023 |
| Avalon Sport and Casual Wear Ltd | Belfast | 2020 |
| Avalon Systems Ltd | Lancing | 2025 |
| Avalon Ventilation Limited | Hughenden Valley | 1992 |
| Avalongas Limited | Bushey | 2015 |
| Avaloninfra Ltd | Harrow | 2026 |
| Avalons Hive Ltd | Glastonbury | 2025 |
| Avaluna Alchemy Ltd | Glastonbury | 2025 |
| Avan Ventilation Systems Ltd | Rowley Regis | 2022 |
| Avanc Ltd | Bristol | 2025 |
| Avance Innovations Ltd | Kettering | 2024 |
| Avancez Offshore Ltd | Glasgow | 2024 |
| Avanco Hear Ltd | Gourock | 2019 |
| Avanda Leisure Ltd | Bishop Auckland | 2025 |
| Avanity Limited | Chester | 2020 |
| Avanor Healthcare Ltd | Norwich | 2006 |
| Avanor Manufacturing Ltd | Norwich | 2025 |
| Avant Consultancy Ltd | Baldock | 2008 |
| Avant Electrical Limited | Kington | 2005 |
| Avant Garde Commercial Kitchen Ltd | Southend-On-Sea | 2026 |
| Avant Garde Regalis Ltd | London | 2025 |
| Avant Manufacturing Limited | Wisbech | 2021 |
| Avant-Garde Brands (London) Ltd | Greenford | 2019 |
| Avant-Gardesign Limited | Derby | 2012 |
| Avante Elevators Limited | Warwickshire | 2008 |
| Avante Garde Ltd | Royston | 2011 |