Westminster Cathedral
The site on which the cathedral stands in the City of Westminster was purchased by the Diocese of Westminster in 1885, and construction was completed in 1903. Westminster Cathedral is the largest Catholic church building in England and Wales and the seat of the Archbishop of Westminster.
Westminster Abbey
Henry VIII assumed direct royal control in 1539 and granted the abbey the status of a cathedral by charter in 1540, simultaneously issuing letters patent establishing the Diocese of Westminster. By granting the abbey cathedral status, Henry VIII gained an excuse to spare it from the destruction or dissolution which he inflicted on most English abbeys during this period.