St Saviour's Church - Coalpit Heath - Description of the building, the story of its history and its architect, William Butterfield, its mission, activities and organisation. - http://www.brander.me.uk/church/
William Butterfield (1814-1900) - Brief notes on the Gothic Revival architect William Butterfield from Bob Speel. - http://myweb.tiscali.co.uk/speel/arch/butter.htm
All Saints Margaret Street - Designed by William Butterfield, a red brick composition on three sides of a small courtyard, with a lavish interior decoration of marbles and polychrome tile, and the second highest spire in London. An unofficial site by Matthew Duckett. - http://www.ucl.ac.uk/~ucgbmxd/allss.htm
William Butterfield - Photograph and brief biography of this Gothic Revival architect from Spartacus Educational. - http://www.spartacus.schoolnet.co.uk/ARbutterfield.htm