THE CATHOLIC APOSTOLIC CHURCH, GORDON SQUARE.
If the Catholic Apostolic Church at the corner of Gordon Square were only finished it would be one of the finest as it already is one of the largest modern churches in London. Built in 1850-54 it is the cathedral of the Catholic Apostolic body founded by the richly-gifted but erratic Edward Irving. It is cruciform in shape, and its interior is an admirable specimen of the Early English style with a graceful triforium in the aisle roof, and two richly-decorated chapels, one of them containing the altar at which Irving was wont to officiate. There is some fine stained glass in the windows, and the music is a great feature of the frequent services. The architect was Raphael Brandon.
source: The Queen's London : a Pictorial and Descriptive Record of the Streets, Buildings, Parks and Scenery of the Great Metropolis, 1896