The earliest record of a building on this site is 1284. However it was in ruins by 1733. The present church consecrated in 1855 was designed by Sir George Gilbert Scott in the 14th Century Decorated style and consists of a chancel, nave, a porch on the north side and a bell tower with crocketed spire. At the east end of the churchyard there is an altar tomb in memory of Revd W A Strange, first Sanskrit scholar at Oxford University, headmaster of Abingdon School and the first Curate at St Mary’s. Over the southern doorway is the crest of Abingdon Abbey, with which Shippon was long associated.