The chancel is C14.
The chancel is C14, rebuilt in the C19,
has Decorated style two-light N and S windows and a large C15 style E window with vertical tracery.
Late C15 N door with a four-centred head and a contemporary door, the bottom repaired.
The elaborate S door, re-set during the C19 rebuilding of the aisle, is probably early C16, and has a pointed opening set within a square surround, with good use of fleurons and blind tracery in the spandrels.
C14 niche with a modern statute above the door.
the door handle is C13 and has a large pierced plate and an oval ring with two lizards.
Tall C15 W tower is embattled and has diagonal buttresses and a polygonal SE stair turret.
Three-light C15 W window with vertical tracery, small square openings in the middle stage, and two-light windows in the upper stage.
INTERIOR Late C15 N arcade of four bays with quatrefoil piers, polygonal moulded capitals and hollow chamfered arches.
The C19 S arcade is copied from that on the N. C15 chancel arch with embattled capitals.
Tall C15 tower arch of two orders, the inner on half-round shafts with polygonal, moulded capitals.
The late medieval nave roof has false hammerbeams and large tie-beams that now conceal steel steelwork inserted in 1983.
Two of the hammers retain figures, and the mortises for others are visible.
PRINCIPAL FIXTURES Re-set C13 handle on S door, with a round, pierced plate and an oval ring with lizards or dragons.
C15 chancel screen with perpendicular tracery, retaining its original doors, re-coloured in the C19.
Two sets of late medieval benches in the nave: those on the N with square ends and shallow buttresses.
In the N aisle, brass to Robert Wyburgh, with an inscription recording his construction of the N aisle in 1480, also a brass in the nave to Joan Bury N aisle E window, 1970s by Pippa Heskett, and a few fragments of medieval glass in the clerestory.
The chancel was rebuilt in the C14.
The chancel arch is C15, and the N aisle was built or rebuilt in 1480 by Robert Wyburgh.
A S aisle was probably demolished in the post medieval period.
REASONS FOR DESIGNATION The church of St Mary, Withersfield, is designated at Grade II* for the following principal reasons: * Extant of medieval fabric, and quality of the Perpendicular fabric * Notable fittings, including the C13 door handle, bench ends, screen, brasses, pulpit and font. * Careful Victorian restoration.