Interior
Single chamber plan with plastered walls and simple tiled pavements counterchanged black/red. Five-bay nave roof with braced collar trusses supported on brackets; simply-decorated braces and raking struts above the collars. Fixed Victorian pews of oak, with stopped-chamfered detail and moulded rails. The limestone font (W end) is octagonal and in Perpendicular style, with moulded base and foliate relief carving to quatrefoil panels on each face; black slate plinth. The rim is inscribed: 'Suffer little children to come unto me.' The Pulpit (SE corner of nave) is semi-octagonal, of oak, and has sunk panels to each face; these with cusped heads. In the NE corner is a large late C19 fitted organ, in simple Gothic style; of oak, with sunk Gothic panels, blind quatrefoils and foliated bosses. Seven-bay Gothic style Rood screen, with large central arch and narrow flanking arches above; diagonally-boarded, panelled dado. This has pointed arches with cusping and a panelled frieze with quatrefoils and crenellated brattishing; central surmounting Crucifixion.
The chancel is stepped-up and has a polychromed tiled pavement. The roof is waggon-vaulted with pine boarding and moulded ribs. Choirstalls similar to the nave pews. The sanctuary is further stepped-up and has a fine polychromed tiled pavement. Oak altar rails (reused from the earlier church), dated 1739. This has a moulded rail and turned balusters with later (C19) ball finials. The sanctuary has a boarded oak dado with pointed-arched, arcaded upper section, the arches cusped. Three-part oak Gothic-style retable with gabled and crocketed central section having a sunk mandorla within a cusped pointed arch; engaged supporting columns. Dividing crocketed finials between the 3 sections, the outer ones with arches as beforeand with raised monogrammes 'XP' and 'An' respectively. The altar is in similar style, with carved, blind tracery front having a central relief-carved Agnus Dei within a cusped oculus. Flanking the E window are affixed a pair of pointed-arched metal boards with painted biblical texts in Welsh and English; decorative borders.
Monuments:
W Wall: small white marble wall tablet to Maurice Jones, (d.1758), and family; erected 1763. This has a winged cherub's head and flanking finials in grey marble; black slate surround.
Nave, S wall (W to E): a plain grey figured marble wall tablet to John and Sarah Jones (d.1824 and 1837), by Edwards and Co. of London. Next, a white marble tablet to John Jones (d.1726), and Sarah, (d.1734); in a black slate frame with segmental pedimaent having a relief-carved winged cherub's head in grey marble. Next is an oval tablet of figured white marble to William Williams of Caernarfon, Esq., (d.1764).
Chancel, S wall: a large funerary tablet in figured white and grey marble to the Rev. Rice Anwyl Clerk, AM, DL (d.1819) and family; by W Jones of Liverpool. Shallow pediment with urn in relief above tablet. To the E of this is a large Grecian monument in figured white marble to the Lloyd family of Plas-yn-Dre, c1836; heraldic cartouche and shallow pediment.
N wall (W to E): large classical funerary monument to Evan Lloyd, (d.1776), and John Lloyd, (d.1774). White marble tablet with pediment having egg and dart decoration and polychromed heraldic cartouche; surmounting flaming urn and shallow obelisk behind, the latter of grey figured marble and with wreath. To the R is a similar, though smaller and unpedimented memorial tablet; to Robert Lloyd of Vron, (d.1768), with addition below with dates from 1805-1835.
Stained and painted glass:
E window with figurative scenes of christological subjects; in memory of A A and E Passingham, erected 1883. Nave, S wall in memory of W and A Jones, (d.1874 and 1884). Nave, N wall, a scene of the Good Samaritan in memory of E Williams, (d.1848). Next (to the E) a 3-light grisaille window to the Anwyl family of Plas Coch, erected 1855.
Miscellaneous: in the nave is a vernacular oak churchwardens' bench inscribed: 'I Forbes Esqr Cefn Bodig 1794'; on the back is affixed an earlier section of oak with inscription in fine raised letters: 'Anno Domini 1657 I:V (for John Vaughan of Caer Gai).'