EXTERIOR: The west tower has a castellated parapet with gargoyles, three South-facing segmental arch windows with tracery and diagonal buttresses.
There is a corner staircase turret and C12 single splayed windows in the lower North and South walls.
C16 clerestory windows with drip mouldings have been inserted on the North and South Walls of the chancel.
The South porch has a pointed arched entrance with a figure of Christ in a recessed niche above.
Two other carved figures of saints are displayed on the corner buttress.
There are said to be traces of medieval painted frescoes over the chancel arch and on the East walls of the chancel and nave.
The south arcade is circa 1530 and the roof of the south aisle is of the same period.
The interior fittings include about 30 mid-Cl5 oak benches with traceried ends.
There are some good monuments including one to Sir Anthony Everard It has reclining figures of Sir Anthony and his wife in an arched recess with panelled soffit.
The rood screen, pulpit and choir stalls are all late C19 and the organ was rebuilt as a memorial to the fallen of both World Wars.
In addition to the medieval glass in the South aisle, there are a number of C19 stained glass windows.
The church has a peal of eight bells, the oldest of which was cast in 1336 and the newest in 1796.
In the C11
C12, the feudal manor of Walthambury, close to the present-day village, was owned by the De Mandeville family, later made Earls of Essex by King Stephen.
The church was probably constructed in the late C11 by Geoffrey De Mandeville, who resided at nearby Pleshey Castle, and it is the most prominent building in the village.
The tower, nave and chancel are principally of Norman construction.
The South aisle was added in the C14
remodelled in 1530.
The nave was heightened, given a clerestory, and the roof replaced in the early C16.
The church possesses many important and rare Norman and medieval features, including the wide nave and intact C16 roof, medieval heraldic glass
C15 box pews.
It is suggested that there are traces of painted medieval frescoes.
Considerable additional interest is found in the C16