The core of chancel probably late C13
Chancel windows perhaps early C14
2 original gargoyles on north side.
South nave arcade of originally 4-bays, late C13, with slender trefoiled piers, and similar chancel arch with engaged columns.
Moulded arched north nave doorway of early C14, hoodmoulded with good mask drip stones.
West doorway with C19 door having tracery of early C15 type - perhaps a fair copy of the original
above it an early C15 window of 3 lights.
C15 south aisle with moulded south doorway.
In early C16 major alterations made to south and west part of church: a 5th arch added to nave arcade, also the tower arch rebuilt.
A rood screen extended from north to south walls across chancel-and chapel-arches
Font of c.1300 with plain octagonal bowl and stem and 8 supporting detached shafts with moulded caps and bases.
TL7786 : St Peter, Brandon - Font cover
4 good C15 choir- stalls with poppyhead ends, buttresses and traceried fronts.
3 further poppyhead ends of c.1600, also reused.
The marble altar reredos of 1873 has Italian carved alabaster medallions.
In the west tower window is stained glass dated 1864