The following text is from the original listed building designation:
LAMBERHURST CLAY HILL ROAD TQ 63 NE (west side) 3/145 Bayham L'Eglise 24.7.89 GV II
Church, now house. 1870 for Marquess Camden, by David Brandon, architect, extended c.1908 and converted 1985. Random coursed dressed sandstone with ashlar dressings and plain tiled roof. Nave and chancel with south-east tower and south porch and north-east vestry. Plinth around whole building, with corner and occasional side buttresses (especially north nave wall) and parapet gables to nave and chancel with enriched cross finials. Tower broached to spire with full lucarne stage. Half- timbered porch on sandstone base, with glazed outer doors and moulded inner door in roll moulded doorway. Trecusped and paired lancets throughout, with shafted and grouped lancets to east and west windows with roundels and hood moulds over, the east window with inserted arched doorway. Simple mullioned windows to vestry. Main internal arches retained. Built as the Bayham estate church and an important element in the landscaped park to Bayham Abbey, the Marquess Camden's house, also by Brandon, and which also includes the remains of the medieval abbey (in East Sussex).
Listing NGR: TQ6503438018

English Heritage, List of Buildings of Special Architectural or Historic Interest (Map). SKE16160.