East Blatchington is a village in East Sussex that has now merged into Seaford, a town on the Sussex coast midway between Brighton and Eastbourne. The church consists of a chancel, rebuilt c.1200, a nave that was originally Norman, and a 13thc W tower with a later broach spire. A S aisle was added to the nave in the 13thc, but later removed - the blocked arcade is still visible. The chancel was restored by Ewan Christian in 1860. There is no Romanesque sculpture here now, but according to Arthur Mee, 'the Norman font was found buried in the churchyard' (Mee 1964, 65). The church now has a modern marble font. No photographs of the Norman font are known.

East Blatchington is not recorded under that name in the Domesday Survey, suggesting that the land was subsumed within other, greater manors. Certainly at least part of it belonged to the manor of Alciston that was held by Battle Abbey from the King in 1086, and by Aethelnoth Cild before the Conquest. Hamo de Warrenne was recorded as the rector in 1257-93.