The church comprises a W tower (13thc.), an aisled nave with 13thc. arcades, and square chancel (1879) with a N chapel which is a continuation of the N aisle.

The church was not mentioned in the Domesday Survey. It was restored in 1879-81 by Ewan Christian.

The VCH (1953) noted that in 1776 the font was of 'the usual twelfth-century form'. By the end of the 19thc. it had been superseded by a 'small stone font' (Bognor Regis Observer 18 July 1917, 4). This was given to a new chapel in North Bersted when a new font was presented to the church in 1899 (Bognor Regis Observer 12 July 1899, 5).

Fragments of the old font were found buried beneath an outhouse in the Vicarage garden around 1887, and stored in the church. They were not mentioned by Walker in 1908, but Peat and Halstead refered to them in 1912. Descriptions of the fragments were published in 1956, at which time the font was about to be 'reconstructed' by the sculptor John Skelton (Bognor Regis Observer 2 March 1956, 1; 15 June 1956, 12). This project does not seem to have come to fruition.

South Bersted is now part of Bognor Regis.

The font can be dated to the late 12thc. It was not mentioned in Walker (1908) or Nairn and Pevsner (1965).

Reeded consoles occur on the transept arches of Clymping, and also at Slindon (N chapel) and Oving (see VCH vol II, 345). Fluted consoles recur on the chancel arch of Yapton. All can be dated to the early 13thc.