By the late 1850s numbers at the parish Church of St. Denys were so great that it was felt necessary to reduce them by building a new church. Land in Boreham Road was offered by Mr W.J. Temple and the vicar, the Rev. Phillips, opened a Building Fund. They raised more money than was needed within one year and the church, designed by G.E. Street, was completed in 1865. The church is in the Early English style with a nave and north aisle, a chancel, with a north aisle for the organ, a vestry, south porch and bell cote. A school was also built.
At first this was a rural parish with only 78 houses and a population of 302 which was taken out of the parish of Christ Church. The church interior has illustrations of scriptural scenes on the wall, designed by C.E. Ponting and painted by J. Powell of Whitefriars before the First World War. In 1925 a baptistry was added by Mrs Rule, the daughter of Mr Temple. In 1956 a new parish of Bishopstrow and St. John was formed. The parish registers for marriages, other than that in current use, are held by the Wiltshire and Swindon Record Office.