W tower is of 3 stages with angle buttresses, chamfered plinth and strings, SE stair, and restored battlements with carved gargoyles.
Nave has clerestory of C15 windows with 4-centred heads
hoodmoulds, 3 2-light to S, one 2-light and one 3-light to N. Below on N side are another similar 3-light window and a C14 2-light window with tracery and arched head.
S aisle has 2 windows of c.1300, each with 2 uncusped lights and quatrefoil above, the left with a scratched mass dial on one of the jambs.
E end has another C15 window of 3 cusped lights with 4-centred head.
Chancel has arch to organ chamber/vestry and an aumbry in N wall, and C13 moulded reveal to E window.
In S wall are a piscina with Caernarvon arch, and good C13 sedilia with 2 chamfered arches and moulded capital to central column.