Hornchurch was a local government district in southwest Essex from 1926 to 1965, formed as an urban district for the civil parish of Hornchurch. It was greatly expanded in 1934 with the addition of Cranham, Great Warley, Rainham, Upminster and Wennington; and in 1935 by gaining North Ockendon. Hornchurch Urban District Council was based at Langtons House in Hornchurch from 1929. The district formed a suburb of London and with a population peaking at 131,014 in 1961, it was one of the largest districts of its type in England.