The 14th-century church was built to a single plan in Decorated Gothic style by a local knight and has remained largely unaltered to the present day.

The church contains a brass monument of national importance, a tall medieval font cover and rood screen paintings.

[6] Wall paintings discovered around 1860 and subsequently plastered over showed four scenes in the story of John the Baptist in 14th-century style.

[7] Lying on a medieval pilgrimage route to Walsingham the church also venerated St Anne, who is shown teaching the Virgin in a painted rood screen panel.

[6] The nave, without pillars or aisles, is nearly 40 feet (12 m) wide, the widest among Norfolk's parish churches, giving a large preaching space as pioneered by the mendicants.

Now with mostly plain glass the east window was recorded in the 1860s as having figures of Sir Hugh and Lady de Hastings holding a model of the church.

[11] The south-east window contains a small stained glass figure of the Virgin from a Coronation dating from the building of the church and a slightly later apostle in red and brown of about 1375.

[12] With some parts missing, it shows a 5 feet 6 inches (1.68 m) long figure in armour with hands together in prayer while two angels hold his pillows.

[6] Suspended by a rope from the roof above is a tall and highly ornate font cover in Perpendicular Gothic style with carved figures, some original, in niches between diagonal pierced vanes with rich crocheting topped by a spire and winged angel.