The Worshipful Company of Glass Sellers is one of the livery companies of the City of London. The company received its royal charter from King Charles II in 1664. Its role was to regulate the glass selling and pot-making industries within the City of London, and to ensure quality and fair trade. Aspiring traders in glass were apprenticed to a master who was a member of the Glass Sellers Company. He in turn was accountable to the court and officers of the livery and ultimately to the master of the company.