south aisle Transitional, c1175-1200
chancel early C14
masonry disturbed from insertion of 2-light Perpendicular window matching flanking windows set in west end of aisles with C12 lancets set between tower
south face has two C12 two-light baluster belfry windows
South chapel, at right angles has coped gable flush with aisle, offset buttress, set in apex is stone carved with 5 blind trefoils, gable stack.
on south, priest's door to left of original C14 two-light window with cusped lights in deeply-chamfered surround.
Chancel: north Tudor-arch blocked by organ inserted c1867 with small cusped light to left
south wall has two C14 pointed-arched windows with a lower cusped light.
Sanctuary: 3-niche sedilia with ogee lintels of C19 character, C15 piscina has trefoil-cusped arch.
Memorials: chancel: carved stone tablet to Charles Lister c1684 decorated with winged-head angel spandrels
memorial to Richard Capstick, flat obelisk marble tablet by J. Parker c1685
Base of tower has 2 upright medieval grave slabs, one decorated with a cross.
The tower is probably the oldest Saxon work in Yorkshire and the only example in the county of the former evidence of a west porch, the tower being erected over it as at Monkwearmouth and Corbridge.