Continuous nave and chancel plan with cluster-truss roof. This consists of grouped primary arched-braced collar trusses, with plain intermediate principals, the latter belonging to the C19 restoration. Encaustic tiled pavement to the W end and central aisle. Primitive late-medieval oak tub font, perhaps C14; of polygonal type with band of knobs towards the bottom. This has a C19 circular limestone base. C19 oak pews, reusing some earlier (probably C17) pew ends; simple geometric tops with chip-carved decoration. Stepped-up chancel, with re-located sections of carved late-medieval brattishing forming a low division between this and the nave; these have blind Gothic arcading and crenellations and are either originally from a former Rood screen, or perhaps formed the wall plate decoration to the formerly waggon-vaulted chancel. Late C17 semi-octagonal pulpit with dentilated and moulded cornice and applied geometric decoration to the upper panels. Further pews, as before, as choirstalls. Polychromed tiles to chancel and sanctuary, the latter stepped up once more. Oak altar rails, apparently re-using turned balusters of late C17 or early C18 type. The side walls have re-located sections of small-field panelling, no doubt originally belonging to C17 or C18 box pews; modern oak panelled reredos (dated 1962).
Monuments: (a) Chancel, N wall: small funerary monument to Jacob Conway of Efenechtyd, Gent., d.1718; in grey/white figured marble with recessed inscription tablet, moulded cornice and shaped apron; ball flower pendant, surmounting the cornice is a polychromed heraldic carving; (b) framed mural tablet in white figured marble in memory of the Rev John Guatti, A M of Jesus college, Oxford, d.1791; by J Nelson, sculptor of Shrewsbury; (c) Nave, N wall: plain inscribed slate tablet to the Price family of Plas (1799-1836); (d) primitive wooden painted and framed tablet to Catherine Lloyd, d.1810; with painted angel's heads in C17 manner; (e) S wall: simple classical funerary tablet in white marble to John Jones of Pen-y-Coed and Ty Draw, d.1813; (f) simple small slate tablet to Catherine Parry, aged 5, d.1737.
On the N wall of the chancel is a fragment of a post-Reformation wall painting, depicting the Commandments in Welsh, painted in black-letter Gothic script; later palimpsest in brown lettering. Also on the N wall is a wooden framed benefactors' board with painted letters in Welsh; dated 1787. The E window has modern figurative glass, dated 1984.