The church has an un-buttressed tower built entirely of Bargate stone with simple rectangular openings for the bell chamber, leading some to believe it is pre-Conquest. The tower is topped with a shingled broach-spire, but its celebrity status was achieved through the extraordinary Romanesque additions made to the chancel in the late C12, including its 2-storey sanctuary formed with a vaulted chamber beneath and a separate chapel above that is open to the chancel and separated from it by a Romanesque guardrail which Pevsner describes as 'one of the earliest pieces of church woodwork' in England. The church has been much altered and was restored by Henry Woodyer. The ashes of Aldous Huxley were interred at Compton in November 1971, and the church appears in Sir Arthur Conan Doyle's novels 'Sir Nigel' and 'The White Company'.
The grant will help fund a repair project to re-roof the north chancel.