Well- coursed rubble to pre-Conquest work, large dressed stone to tower, hammer-dressed stone to C19 work, stone slate roof with clay tiles on chancel.
Embattled parapet with projecting rainwater chutes with gargoyles
South wall Anglo-Saxon.
Interior: much altered though the C12 circular pillars to the aisle-arcade remain.
Two important pre-Conquest cross shafts, one known as the Oswini Cross and claimed to be C7 and as such the 'oldest authentic Christian monument existing in the North of England', but now thought to be slightly later.
This is carved with representations of the Apostles. the other is C9 or C10 and has intelace carving incorporating dragons and ruinic inscription in base.