The parish church of St Mary’s was originally built shortly after the Norman Conquest and expanded in the centuries that followed. The oldest section is the north wall dating from the 11th century and containing a variety of building materials including numerous Roman tiles. Major modification occurred in the 14th century when the church was extended on its south side.
On the south wall there two low recesses with elegant stone surroundings containing a pair of tombs embellished with the effigies of a man and wife in 14th century dress, presumably installed when the church was extended.
On the north wall there are remains of two murals. The smaller and older is of a devil, covered in spikes, and is likely part of a depiction of the last judgement. The larger shows St Christopher carrying the infant Christ and likely replaced the former mural int the 14th century. This is turn was plastered over in the 18th century and only re-discovered in the early 20th century by the then vicar Jesse Berridge.
By the altar is the tomb of Henry Mildmay (1578-1639), who lived at Graces. It comprises a canopied monument with Henry in armour, lying down and leaning on his arm. Both of his wives are kneeling before him, Alicia on the left and Amy on the right.