3-stage west tower with a diameter of 29 feet and 62 feet high is said to be the largest Norman round tower in England, originally possibly a watchtower for St. Edmund' s Bury.
Unbuttressed north aisle: 2 tall 2-light C14 windows, rectilinear tracery with curvilinear heads, similar windows on east and west returns, towards west a double chamfered pointed arched doorway blocked with C19 squared flint, moulded course to plain brick parapet.
Chancel: to south a central C14 low side door, heavily moulded pointed arch with shafted jambs, above an empty niche with a cusped ogee head, flanking 2 stage buttresses and tall 2-light window with hexagonal rectilinear traceried heads, moulded plinth and cornice to rebuilt embattled parapet, south east 2 stage diagonal buttress.
Interior: blocked tower arch, C14 double chamfered chancel arch, semi-octagonal responds with moulded caps and bases, outer chamfers have cusped stops.
In chancel: windows towards west have C14 shafted jambs to moulded rear arches, simpler mouldings to east except large east window which also has shafted jambs and an outer moulding, an elaborate stone reredos of 1856 with richly carved vinescroll ornament, panels with biblical texts in Gothic surrounds, to south a piscina with a cusped and crocketed ogee head.
C14 octagonal font, moulded cap and base to stem, masks to bowl with cusped and crocketed gabled faces, brattished head.
https://historicengland.org.uk/listing/the-list/list-entry/1032741?section=official-list-entry
In south aisle Royal Arms of Charles I, carved oak oval panel, also Betts family hatchments.
C19 seating copies original with poppyhead bench ends with carved figures and animals.
Some C18 barley sugar balusters used in C19 communion rails, fragments of C15 screen used in altar table.
Chancel floor 3 C18 slabs with arms to members of Betts family, south aisle 2 medieval florated cross slabs.
Some C15 glass fragments in east window.