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.
William Butterfield - Photograph and brief biography of this Gothic Revival architect from Spartacus Educational.
William Butterfield (1814-1900) - Brief biography of this Victorian exponent of the Gothic revival in Great Buildings Online.