C15.
Nave largely rebuilt C14
C20 double plank doors within a late C12 round-headed archway (probably restored).
The inner arch is supported by keeled jamb shafts with stiff leaf capitals with finely carved decoration.
The windows in the south and west walls of the nave are probably C15 in date.
C14 chancel (restored C19)
Two 2-light stone-mullioned windows on the north side, one with a stopped hood (now blocked), one with ogee-curved trefoil heads to each light and carved spandrels.
East window and windows in the north wall probably C15.
The left-hand casement has a hollow-chamfered mullion, trefoil-headed lights, spandrels carved out to form small lights and stopped hood.
Both windows probably C15.
The tympanum depicts Christ in Majesty flanked by two winged angels, in bold relief.
Three-stage C14 tower with simple flat-chamfered single lights in the side walls.
Most of the east wall comprises an early C18 monument in memory of the Tayler family.
The monument comprises a rectangular inscription plaque with a single carved head at the top, flanked by the full length figures of two men and two women.
Two small inscription plaques with moulded margins but with no legible inscription either side of the figures.
C14 sanctus bellcote at the east end of the nave.
Early carved stone head (possibly once a corbel) set in the splay of the right-hand window.
Painted C17 scrolled text on the north wall of the north aisle.
C15 octagonal limestone font at the west end of the north aisle.
SP2012 : St. Peter, Little Barrington: font
C19-early C20 pews and pulpit.
Monuments
grey and white marble monument to Giles Greenway, died 1815 and Jane Greenway, died 1819 (q.v. Barrington Grove) by Wood of Gloucester.
Monument to the John Grayhurst, died 1730 and Sarah his wife, died 1739
White on black marble monument to Charles Greenway of Barrington Grove and of Upton Priory, died 1859 and of Charlotte his wife, died 1873, by Lewis of Cheltemnham.
Some C14 stained glass in the east window of the north aisle. (David Verey, The Buildings of England