In 2015, it was announced that researchers from Queen Mary University of London found what they believe to be the oldest tea in Britain. The dried green tea was acquired in China, around the year 1700, by ship’s surgeon James Cuninghame, who subsequently gave it as a gift to the famous physician and collector of curiosities, Hans Sloane. In this video, the research team discuss the significance of their discovery and their work as historians of Britain's favourite drink.