Westerham is a town and also civil parish in the Sevenoaks District of Kent, England, located 5 miles (8 kilometres) west of Sevenoaks. It is recorded as early as the 9th century, as well as was pointed out in the Domesday Book in a Norman form, Oistreham (compare Ouistreham in Normandy, Oistreham in 1086). Ham is Old English for a town or homestead, and so Westerham indicates a western homestead. The River Darent flows via the community, and also previously powered three watermills. Westerham was house to the Black Eagle Brewery, which was taken over by Taylor Walker & Co in the 1950s, entering into Ind Coope in 1959 and also closing in 1965. Yeast from the brewery was preserved at the National Collection of Yeast Cultures as well as is now used by the existing day Westerham Brewery which was established in 2004 by Robert Wicks. The brewery produces a range of ales, consisting of Westerham British Bulldog. Westerham was house to Crayford Engineering, a successful vehicle conversion business, from 1962 to the 1980s, working from a workshop at Squerryes Mede.