The British Antique Dealers Association was founded in London, 1918. It is a trade association for antique dealers in Britain. Customers can bring complaints against members to the governing body who have the power to revoke membership from an offending business and ban them from participating at various art fairs around the world.
Art Fairs
BADA organise their own yearly art fair as well as helping in assuring the quality of goods at other art fairs.
References
British Antique Dealers' Association Wikipedia(Text) CC BY-SA