St Peter's has a big, aisleless 15thc. nave with Perpendicular windows under wall arches, a 15thc. chancel with a similar internal elevation and a N vestry, a 13thc. W tower with a 15thc. tower arch and a two-storey 15thc. S porch. The chancel arch is 13thc. The church was restored in 1851, and N transept and attached organ chamber were added in 1868. Construction is of rubble with some render on the tower, which is fitted with a lead spike. The only features recorded here are two stones in the S porch, one loose, the other mortared in place. Both are treated as loose stones below.

Five hides in Wilburton were given by Ethelwold and Brithnoth to Ely Abbey before the Conquest. In 1086 the Abbot of Ely the manor was assessed at 5 hides. In 1109 Wilburton. like its neighbours, was alloted to the new Bishop of Ely. It remained with the bishop's successors until the Reformation.

The VCH dates the scallop capital to the 13thc., Pevsner simply ascribed the sones to 'a previous church'. The scallop capital is 12thc and the moulded one 13thc.