St Augustine's Church is one of the best surviving churches by the legendary Victorian architect William Butterfield. It is on a scale that can rival the huge stucco terraces around it. These grand London churches are as much testament to the skill of the Victorian craftsmen as to the confidence of the whole Victorian era. St Augustine's has some extremely fine furnishings from the time of Butterfield and from the early Twentieth Century, the latter are in a 'Back to Baroque' style. The immense reredos and altarpiece, the backdrop and tester for Butterfield's pulpit, the Stations of the Cross and the Lady Chapel Altar and triptych in the north aisle, are all very fine interventions by Howard Martin Otto (1886-1948).

There is an extremely important organ by Willis at St Austine's.