Interior
Whitewashed plastered walls with 2-bay grey stone arcade between nave and aisle, and similar 2-bay arcade between chancel and aisle, the arches hollow moulded, four-centred, late medieval, but centre thin round piers with chamfered caps and bases. Nave pier has a rope moulding below cap. Chamfered responds with plain capitals, nave E one with eroded carved head on N side, and small niche on S side of W respond. Chancel arcade has eroded stops to hollow mouldings, mostly shields, one on N side of centre pier with a diagonal cross, one to N side of E respond with shield reversed and 3-armed device. E respond has crude carving on capitals of human-faced beast. Whitewashed plastered pointed chancel arch, the sides stepped in. Segmental arched tomb recess in S aisle. C12 square scalloped font, tapered below to round shaft.
Roofs and fittings of the 1870s, arch-braced collar trusses with cusped struts above to nave, heavier arch braced trusses on corbels in chancel, plain pitch pine pews and pulpit by Lingen Barker, N facing pews in S aisle perhaps a family pew with older panelling to wall. Altar rail has 4 twisted iron standards with ornate scrollwork. Early C20 well-carved altar table reredos and panelling to Rev A. Richardson (d1911) and matching lectern, c1920, similar to work by Edwin Thomas of St Davids, some of which was designed by J. Coates Carter.
Stained glass: E window, 1906, Christ, SS Peter and John, C15 style by R. Newbery. Eroded glass of c1878 in S aisle end windows, the E window Suffer the children and Take up thy bed, by Alexander Gibbs, to T. Tucker Edwardes (d 1877); the W window, Go thou and do likewise, signed C.A. Gibbs, to Alexander Cope (d 1874).
Memorials: chancel W painted plaque to Rev J. Jenkins (d 1815) with ornate lettering, signed J. Jas. f.cu (probably J. James of Llanychaer). S aisle S wall: 1. fine Baroque memorial in carved Bath stone to John and Grace Tucker (dd 1740), draped sides, broken pediment, with shield and cherub head below. 2. J. Owen Edwardes of Treffgarne and Llanmilo, and wife Catherine Tucker, by Tyley of Bristol, sarcophagus shape with draped urn, given by Mary Tucker, 1820s. 3. Memorial with mourning female and urn to John Tucker of Trellether (d 1794), 1820s, given by Mary Tucker. 4. Sarcophagus plaque with draped urn to Mary Tucker of Cledde, Camrose (d 1835), designed as a near pair to J.O. Edwardes memorial by Tyley. 5. Mourning female to W. Tucker Edwardes (d 1858) by Gardner of Leamington. S aisle E: 1. plaque to Admiral Thomas Tucker of Hook (d 1766), given 1827, marble with urn; 2. oval plaque with draped urn of 1820s to Maria Tucker (d 1755) and Ann Tucker (d 1782); 3. plaque with similar urn of 1820s, to Thomas Tucker (d 1807), both last given by Mary Tucker. Nave N plaques to Thomas Morse and family c1855, signed T. Jones; and to Joseph Madocks of Broadmoor (d 1860) given by his landlady, Mrs Tucker of Sealyham.