[3] From 1863, a Fr George Bampfield came to Watford to say Catholic Mass in rented accommodation in Carey Place.

Fr Bampfield bought a place on Water Lane and had another chapel built there.

Work was done to build the tower, Holy Ghost chapel, north aisle and baptistry.

On 5 July 1900, the completed church was consecrated by Bishop Robert Brindle.

The flint, stonework and roof were repaired and the painting inside the church was cleaned.