 By 1890 it housed over 1,000 children and adults and included Darenth Asylum.By 1911 part of the site has become the Darenth Industrial Trading Colony, and the institution was becoming almost self-sufficient in food production and the manufacture of everyday items, thanks to its ample supply of free labour.In 1936, as the age and disability levels of residents increased, the name became Darenth Park Hospital, and in 1948 the management was transferred from the London County Council, which had succeeded the Metropolitan Asylums Board in the management of the institution, to the new National Health Service.