[2][3] St. Mary's is among the earliest five documented Christian holy sites south of the River Thames in London, historically in Surrey, in the Diocese of Winchester.

It consists of a nave, rectangular in plan, an apse at the east end forming the sanctuary, and a west tower.

The west front has a single storey entrance porch with Tuscan columns supporting a pediment.

Inside, the whole width of the church is spanned by a flat ceiling, and there are wooden galleries supported by columns on three sides.

To the right Christ walks on the Thames and to the left Lazarus rises beneath the church porch.

[6] At the back is the terracotta War Memorial by Freda Skinner, depicting the Gate of Life guarded by the Angel of Sacrifice.

[6] The church has strong connections with art and literature through the artist and poet William Blake, who married Catherine Boucher there on 17 August 1782,[8] and J. M. W. Turner, who painted the river from the vestry window.

James Bull, Merchant, aged 44 years, (d. 1713), son-in-law of Sir John Fleet.