Tower, dated 1397: chamfered plinth
string with gargoyle, and shields at corners, below crenellated parapet.
Porch: late C14
image niche above with modern figure of St Peter
crenellated ashlar parapet with corner pinnacles and central cross-legged figure.
set into east wall, piece of stone carved with miniature interlaced Romanesque arcading.
South aisle: C15
Nave south clerestory: late C15
North aisle: early C14
Chancel: late C12
early C14 window of 2 trefoiled lights with star-shaped tracery and label with heads at apex and to right stop
C13 window of 3 pointed lights in double-chamfered opening with four-centred arch and label with head stops, flanked by 2 worn heads, and with other old fragments in walls.
Added stepped buttress to right at junction with early C14 gabled vestry which has window of 2 trefoiled lights with star-shaped tracery, and label with head stops, the heating chamber and air-raid shelter added on to east end not of special interest
Interior: north arcade: early C14
South arcade: C15
against the west wall is propped a large piece of carved woodwork, possibly the front of a large pew, inscribed "CN.
ANNO DOM 1639".
North windows contain carved grave slabs, eg cross base in jamb of west window, and cross with sword and Latin inscription used as lintel to eastern window.
Near the south door is the font, a circular bowl on a moulded base.
on the north side, sill string to late C12 round-arched window with splayed reveal of exposed Romanesque masonry, now giving onto eastern vestry, and old door to vestry in continuously-hollow-moulded pointed-arched opening
Good C19 rood screen within chancel arch.
on north wall a marble monument to Thomas Wycliffe of Richmond d1821, last surviving male descendant of the reformer Wycliffe, with urn on pedestal above inscription and coat of arms below, by Bennet Flintoft, York.
Above north arcade, wall monuments to Rebecca Lax d1775 and Hannah Lax d1811, with urn, by Fisher of York
At east end of north aisle, wall monument to Francis Laton d1609 and wife Ann d1622, with many coats of arms on cartouches.
Above south arcade, wall monument to John Hind of Gayles, d1836.
On south wall of south arcade, large plaque with Latin inscription commemorating Rev Dr John Dakyn D D, d1558, founder of the Grammar School (qv) and Almshouses (qv), the monument being of later date, having the inscription on the frieze below the cornice "G. DAWSON ET I. COATES.