The new building was consecrated in 1866 by Bishop Tait, the Bishop of London, who praised Teulon's alterations at St Mary's, Ealing, as "the transformation of a Georgian monstrosity into the semblance of a Byzantine Basilica".

The church contains a good collection of Victorian stained glass windows that were commissioned by Thomas Boddington, who lived at Gunnersbury Lodge, in 1864–74.

[7] Old wall tablets and a medieval brass to Richard and Kateryn Amondesham (c.1490) were retained from the old church.

The marble and Caen stone reredos was adorned with Salviati mosaics.

[8] There is a memorial to John Horne Tooke (d 1812) by Louis Frederick Roslyn and a modern brass to Walrond Jackson, Bishop of Antigua, who died in Ealing in 1895.