Parts of the church date back to Saxon times, and all subsequent mediaeval periods are represented. A church is mentioned at Wilsford in the Domesday Book, and it is thought to have been held in high status in the pre-conquest era. The church was restored in 1860 by Kirk and Parry.

There is a west tower with spire, clerestoried nave, north and south aisles, south porch, and chancel. The tower dates from the 15th century and has an embattled parapet with gargoyles. The spire has two tiers of lucarnes. There are three bells, originally there were four.

The nave has a 15th century embattled clerestory, the north arcade is of two bays from the late 12th century with round arches. The south aisle is 15th century with pointed arches, the most western one being larger. The north aisle has a large number of mediaeval carved pew ends. There are also some in the south aisle, at the east end of which is the Lady Chapel. The font is hexagonal, decorated with flowers and from the 15th century. At the rear of the nave are several lead panels taken from the roofs when they were repaired, which have the names of churchwardens and are dated in the mid 18th century.

The chancel arch dates from the 1860 restoration, possibly reusing earlier work. The chancel is recorded as being rebuilt by Roger Warde who died in 1477. The east window is from the Decorated period with stained glass from 1920, inserted as a war Memorial. The chancel also has mediaeval carved pew ends, and a piscina and aumbries. The hammerbeam roof was part of the Victorian restoration

The Porch dates from the 15th century and has stone ledges on both sides. There is an empty niche above the south door which possibly once held a statue of the Virgin Mary holding baby Jesus.