St Botolph's has an aisled, clerestoreyed nave with N and S doorways, the S under a porch; aisleless chancel with a N boiler-room, and a W tower with a spire. The tower, 12thc. in its lower parts, was rebuilt in 1864-65 under the direction of Edward Browning, and at that time Anglo-Saxon foundations were discovered. The S aisle, with its two-bay arcade, was added in the early 13thc., and the N in the mid 13thc. The S doorway, under a 14thc. porch (rebuilt in 1901), belongs stylistically to c.1200, but might be contemporary with the S arcade. The N doorway has been blocked, probably in 1864-65. Around 1300 short bays on corbels were added at the E end of each arcade, and the chancel rebuilt. The chancel windows are dated 1609. At the W end, the aisles flank the tower, but the tower arches to N and S are 19thc. copies of 12thc. work. The tower's lowest storey is square; a chamfer in the 2nd storey produces an octagonal plan, which is maintained for two further storeys. On top is a short stone spire with a single row of lucarnes. Construction is of ashlar except for the chancel, of roughly coursed stone. Romanesque features are the tower arch responds and capitals (the arch is later) and the S doorway.
