the chapel was built by the unitarians as a meeting house to hold 400 people, with stables and coach-house, a lecture room added in 1818, and schoolrooms in 1826. one notable minister, from 1817 to 1839, was doctor lant carpenter, the father of social reformer mary carpenter. a grade ii* listed building since 1959, it was converted to offices in 1987 by feilden clegg architects, and housed the offices of a construction consultancy, provelio. in january 2017 it was purchased by emmanuel bristol, for its city centre congregation.