All that remains of the original Norman church are a door in the north wall, the arched pillars and possibly the baptismal font.
In about 1320 the chancel was built, part of the north wall was widened and the south aisle was added to form chantry chapels.
The church contains some fine Jacobean panelling. On the North wall are important examples of 17th and 18th century wall paintings which may formerly have covered the entire wall. In the churchyard near the north door lies the tomb of Sir Richard Westmacott (1775–1855), perhaps the greatest monumental sculptor of the Victorian era.