In 1951, St. John’s area became a Conventional District and St. John’s District acquired a thin slice from the parish of St. Andrew’s, West Tarring. In 1955, the Bishop agreed to St John’s becoming a parish in its own right.
At the end of the nineteenth century, Elm Grove was a growing district in Heene and the Rector of St. Botolph’s, Heene, decided to build a ‘Mission Room’ for the west of his parish. On 6th January 1901 people worshipped for the first time in what is now the south aisle of St. John’s, West Worthing.