Small lean-to chapel of 1873, built when Saxon arch inside exposed, has tiled roof and one lancet
South transept has three-light geometric-traceried window with hood mould with carved head terminals
South side chancel has three pairs of cusped ogee-headed lancets, east end has diagonal buttresses and three-light window with reticulated tracery and hood mould with carved head terminals
Interior: heavily moulded pointed arch inside porch is by Street, doorway inside nave is Saxon round arch in dressed stone
Two C8 or C9 Saxon round arches to former porticus flanking east end
north is in dressed stone with fine vine scroll and interlaced carving to jambs
Some fine C19 and early C20 stained glass, especially south transept window, the work and gift of Helen, Countess of Radnor, 1929, west window by Ward and Hughes of London, 1882
Radnor Mausoleum attached to north west corner of north transept, of 1764, altered 1873 by Street with ashlar walls and pitched roof, carved arms of Pleydell-Bouverie family on east wall by John Deval the Younger 1779