Click photos to enlarge.
Notes in italics from Hampshire and the Isle of Wight by Nikolaus Pevsner and David Lloyd (1967)
Yale University Press, New Haven and London. Other information from the leaflet in the church.

On its own by a large pond. Nave and chancel and a pretty polygonal bell-turret held up partly by an external W buttress, partly by a stepped projection inside. The wooden base of the bell-turret is a 19th century replacement of a decayed 14th century stone base.

The oldest parts of the church were probably built between 1100 and 1125 by William de Mauditt. The nave is of the C12, with Norman windows, no longer slits ... (i.e. the round-arched windows). The south nave window to the right in the first picture is of around 1320. The two larger windows in the north wall in the middle picture are Victorian. 

A sumptuous S doorway of c.1200. The arch is pointed. The hood-mould has dogtooth, the main arch radially placed clasps or horseshoes.

The chancel arch seems Earlier Norman (e.g. early 12th century). It is low and round and has a single-step arch. Chancel of c.1300 or later. Windows with pointed-trefoiled heads, the E window with cusped Y-tracery (a 1972 replica of the decayed 1350 stonework). The church leaflet states that the chancel is early 13th century and that the south windows in the middle picture are late 13th century. However, one would normally expect a pointed lancet window to be early 13th century (supporting the church's dating of the chancel), and the two-light window has a distinctly Perpendicular square hood-mould, e.g. 15-16th centuries.

Monuments on the north wall of chancel to members of the Stuart family. Sir Nicholas Stuart, later C17. Large black and white marble. Big open semicircular pediment. ... 

Nave looking west. The west windows are recent, 1970.
Font. Octagonal, Perp, with quatrefoils and tracery panels. (c.1500)