The Gravel Pit Chapel was established in 1715–16 in Hackney, then just outside London, for a Nonconformist congregation, which by the early 19th century began to identify itself as Unitarian. In 1809 the congregation moved to the New Gravel Pit Chapel nearby, while its old premises were taken over by Congregationalists. The New Gravel Pit Chapel was closed and demolished in 1969.