The church comprises a 13thc. chancel and central tower, and an 11thc. nave with a 13thc. N aisle and S porch. It incorporates no 12thc. fabric.

In 1086 Kingston Buci (or Kingston-by-Sea) was owned by William de Braose and held by Ralph de Buci. It had a church.

The late 12thc. dedication is recorded in B.L. Cott. M.S. Nero E. VI, F.266.

The church was restored in 1940 by Walter H. Godfrey. It was reordered and repaired in 1886-88.

If this was a column-statue, it is the only fragment of one to survive in Sussex, and one of the few 12thc. examples known in England. It is unlikely to have come from Kingston Buci, and the most obvious provenance is Lewes Priory. Unfortunately, its passage to Kingston Buci is undocumented. Such a small area of surface carving survives that it is difficult to analyse the drapery style. The folds of the L sleeve appear to be softly modelled. The symmetrical arrangement of the costume, the hood and the gesture of the L hand lead one to suppose that the figure is an ecclesiastic.