All Saints' has an aisled and clerestoreyed nave with 13thc. three-bay arcades, an early-14thc. chancel with a contemporary N chapel, now housing the organ, and a 19thc. N vestry. The W tower is also early 14thc. with a later parapet. Romanesque interest centres on the S porch entrance, an elaborate reset work of the late 12thc. The plain and slightly later N doorway is also included.

Two hides in Great Addington were held by Thorney Abbey in 1086, and a further hide and a half by Hugh from the Bishop of Coutances. No church was recorded in either holding.

Benefice of Great Addington with Little Addington and Woodford.

Pevsner dated the S porch entrance c.1190-1200, which must be right in view of the presence of stiff-leaf and keeled mouldings. Whether it was originally a porch entrance is open to question, but it is hard to see what else it could have been: it is certainly not big enough for a chancel arch. The chamfered orders and filleted label of the N doorway indicate a similar or slightly later date, say c.1200-1210, despite the round arch. The heads are worn, but the expressiveness still discernible, especially in the better-preserved W head, suggests the 13th century rather than the 12th.