Parish of St Mary, Hoxton , Church of England

Saint Mary, Hoxton was created in 1866 out of parts of the parishes of Saint John, Hoxton and Holy Trinity, Hoxton, and Saint Barnabas, King's Square. The church was in Britannia Street (later Britannia Walk) and the vicarage was in Provost Street. In 1953 Saint Mary was united with Holy Trinity, Hoxton (the church had been bombed during the Second World War) to form Holy Trinity with Saint Mary.

In 1903 Saint Mary was in the Rural Deanery of Shoreditch, in the Archdeaconry of London, in the Diocese of London.