The church was savagely altered in 1866 by Ewan Christian (better known as architect of the National Portrait Gallery, London, 1890–95), who removed the galleries and the box pews; blocked up the windows in the aisles and lengthened the gallery windows. After years of neglect, it has been restored to its appearance circa 1750, on the basis of the surviving archaeological and documentary evidence. The restoration has revealed one of the most complex and sumptuous of Hawksmoor's interiors in London.