North and south nave arcades and aisles of early C14.
Clerestory, one bay of south arcade and west tower, c.1475.
West tower, late C15, embattled and of three stages on plinth.
Central gargoyle to main cornice.
south arcades early in C14.
Roof raised for clerestory, C15.
Two windows, C14, of two trefoil lights with reticulated tracery. (Meldreth and Grantchester parish churches with similar fenestration).
One three-light window, C15, much restored to C15 bay addition.
South wall has an original window of two lights with Y tracery in two centred arch and an early C14 window of two trefoil lights.
North aisle with two early C14 windows of clunch with reticulated tracery.
The large bay to the west was added in C15, probably contemporary with the tower.
Two centred arches of one wave and one hollow moulded order with broach stops on similar early C14 columns of quatrefoil section.
North aisle has a North chapel at the east end with screen of C15.
The south aisle has an early C14 piscina in south wall.
Two centred arch, moulded, C15 and associated with the rood screen below.
The roof is C15 and similar to that over the nave at St. Edmunds, Hauxton (q.v.).
The intersections in the roof are enriched with carved bosses.