| Avon Computer Exchange Limited | Professional & scientific | 1985 |
| Avon Concordia CIC | Arts & recreation | 2025 |
| Avon Construction Management Ltd | Construction | 2020 |
| Avon Construction Training Group Limited | Administrative & support | 1998 |
| Avon Convenience Ltd | Wholesale & retail | 2022 |
| Avon Corinthians Rowing Club CIC | Arts & recreation | 2025 |
| Avon Court Management (Fishponds) Limited | Households | 1973 |
| Avon Crest Management Co. Limited | Real estate | 2007 |
| Avon Displays Ltd | Manufacturing | 2011 |
| Avon Doors Limited | Manufacturing | 2014 |
| Avon Drivers Limited | Transport & logistics | 2007 |
| Avon Education Services Ltd | Education | 2017 |
| Avon Electrics Group Limited | Construction | 2023 |
| Avon Energy Limited | Real estate | 2003 |
| Avon Energy Partners Ltd | Professional & scientific | 2020 |
| Avon Energy Surveyors Ltd | Professional & scientific | 2013 |
| Avon Engineered Rubber Limited | Manufacturing | 2007 |
| Avon Engineering Supplies Ltd | Wholesale & retail | 2003 |
| Avon Estate Management Limited | Real estate | 2016 |
| Avon Events Ltd | Hospitality | 2026 |
| Avon Executor and Trustee Company Limited | Professional & scientific | 1953 |
| Avon Extinguishers Limited | Other services | 2003 |
| Avon Fibreglass Roofing Limited | Construction | 2009 |
| Avon Fire Systems Limited | Administrative & support | 1999 |
| Avon Floor Levels Ltd | Construction | 2023 |
| Avon Garage Doors Limited | Manufacturing | 2010 |
| Avon Gleaning CIC | Manufacturing | 2025 |
| Avon Gorge Property Ltd | Real estate | 2024 |
| Avon Group Manufacturing (Holdings) Limited | Professional & scientific | 1995 |
| Avon Group Manufacturing Limited | Manufacturing | 1981 |
| Avon Hardwood Flooring Limited | Construction | 2009 |
| Avon Haven Limited | Hospitality | 2025 |
| Avon Health Ltd | Health & social care | 2021 |
| Avon Healthcare Services Ltd | Professional & scientific | 2016 |
| Avon Healthcare Solutions Ltd | Health & social care | 2020 |
| Avon Home Carers Limited | Health & social care | 2007 |
| Avon Homecare Ltd | Health & social care | 2019 |
| Avon House Management Company Limited | Households | 1996 |
| Avon Indian Community Association | Health & social care | 2009 |
| Avon Industrial Buildings Trust Limited | Administrative & support | 1980 |
| Avon Industrial Doors Limited | Manufacturing | 1987 |
| Avon Joinery Manufacturers Limited | Manufacturing | 2022 |
| Avon K9 Ltd | Other services | 2025 |
| Avon Lifting Services Limited | Manufacturing | 2001 |
| Avon Living Ltd | Real estate | 2025 |
| Avon Local Medical Committee Limited | Other services | 2008 |
| Avon Lodge Veterinary Group Limited | Extraterritorial | 2011 |
| Avon Maintenance Solutions Ltd | Construction | 2024 |
| Avon Marquee Company Ltd | Administrative & support | 2024 |
| Avon Masonry Limited | | 1973 |
| Avon MB Group Ltd | Construction | 2026 |
| Avon Minibuses Limited | Transport & logistics | 2003 |
| Avon Motors Bristol Limited | Wholesale & retail | 2022 |
| Avon Motors Services Limited | Wholesale & retail | 2025 |
| Avon Needs Trees Trading Ltd | Real estate | 2024 |
| Avon Neuroradiology LLP | | 2006 |
| Avon Organic Foods Limited | Wholesale & retail | 2023 |
| Avon Outdoor Activities Club | Arts & recreation | 2012 |
| Avon Pension Administration Ltd | Financial services | 2014 |
| Avon Plant Ltd | Wholesale & retail | 2013 |
| Avon Plastering Service Ltd | Construction | 2012 |
| Avon Prefabricated Buildings Limited | Real estate | 2004 |
| Avon Properties (Weston) Limited | | 1971 |
| Avon Property Partners Ltd | Real estate | 2026 |
| Avon Property Services Ltd | Real estate | 2023 |
| Avon Realtor Ltd | Real estate | 2025 |
| Avon Rheumatology Limited | Health & social care | 2019 |
| Avon River Cruises Ltd | Transport & logistics | 2004 |
| Avon Road Mark Limited | Administrative & support | 1996 |
| Avon Saunas Ltd | Other services | 2025 |
| Avon Scanning and Planning Limited | Real estate | 1989 |
| Avon Services Limited | Wholesale & retail | 2002 |
| Avon Sheds Limited | Other services | 2013 |
| Avon Sign Services Limited | Administrative & support | 2006 |
| Avon Specialist Equipment Ltd | Wholesale & retail | 2011 |
| Avon Stainless Fasteners Limited | Wholesale & retail | 2008 |
| Avon Sterling Group Ltd | Real estate | 2026 |
| Avon Stone Contractors Ltd | Construction | 2020 |
| Avon Stone Limited | Construction | 2018 |
| Avon Surveillance Limited | Administrative & support | 2003 |
| Avon Survey Ltd | Construction | 2019 |
| Avon Tattoo Ltd | Other services | 2014 |
| Avon Tech Solutions Ltd | Information & communication | 2026 |
| Avon Trade Centre Limited | Wholesale & retail | 2024 |
| Avon Traffic & Safety Services Limited | Construction | 2015 |
| Avon Truck & Van Limited | Wholesale & retail | 2003 |
| Avon TSA Limited | Manufacturing | 1977 |
| Avon Tuning Limited | Manufacturing | 2013 |
| Avon Valley Building Services Limited | Construction | 2016 |
| Avon Valley Churches of Christ Limited | Other services | 2025 |
| Avon Valley Country Park Ltd | Arts & recreation | 2003 |
| Avon Valley Ground Works Limited | Manufacturing | 1988 |
| Avon Valley Railway Heritage Trust | Transport & logistics | 1979 |
| Avon Valley Services Limited | Manufacturing | 2001 |
| Avon Waste Disposal Ltd | Water & waste | 2005 |
| Avon Welding Supplies Limited | Wholesale & retail | 2002 |
| Avon Wildlife Trust | Professional & scientific | 1980 |
| Avona Limited | Information & communication | 2025 |
| Avonaero Consultancy Limited | Professional & scientific | 2018 |
| Avonaire Ltd | Energy | 2002 |