The Chamberlain of London is an ancient office, responsible for collection and distribution of revenues within the City of London. Nominally appointed by The Crown, the office-holder's term traditionally begins on Midsummer Day and cannot be removed "unless some great cause of complaint appear against him". In 1590, the right of the Chamberlain to levy local taxes on goods sold within the city was upheld in The Chamberlain of London’s Case as a valid regulatory measure. More information on the Wikipedia page [1]