This church building is often locked but a key is available nearby. There will be a notice in the church porch with details of where the key is held.

The red brick garden wall of Ketteringham Hall forms the south wall of St Peter's churchyard. The church is delightful in its proportions and setting, nestled amongst cypress trees and thatched cottages. Look closely and you will see evidence of two blocked Norman windows on the south wall of the nave with small openings framed with flints and rounded arches. The tower was rebuilt in 1609 and the figures standing on top, St Peter and two angels, were added in the 1870s. Floral motifs and shields encircle the 16th century font. The church is overflowing with stories, its walls bedecked in elaborate memorials. Of great interest are the gilded and enamelled brasses commemorating Thomas and Anne Hevenyngham (d. 1499) mounted at the back of the table tomb in the chancel. Five sons kneel with Thomas and five daughters with Anne. Sir William Hevingham (d. 1678) is remembered in a lavish memorial on the north side of the altar. He was on the Parliamentarian side in the English Civil War and present as one of the judges in the trial of Charles I but did not sign the death warrant. Following the Restoration, Sir William's estates were taken from him and he was imprisoned. Another memorial is that of Charlotte Atkyns and states she was a friend of Marie Antoinette and made several attempts to rescue her from prison. Intriguing medieval glass survives in the east window and a hand-drawn key mounted on the south west wall of the nave maps the depictions, which include a range of saints and coats of arms.