Parts of the nave date from the 13th century, included the scissor-braces of the roof, with additions in the 15th century. There is a north aisle in red brick built in 1644, and inside the arches and octagonal columns of the five-bay arcade are made of oak. With Epping Forest so close, timber was a cheaper and more readily accessible building material than stone. The Tudor tower was built c1520 in red brick with interspersed blue bricks. It is of three stages with an embattled parapet. The building id Grade I listed. The church has been near to the main route to London for centuries as the old Roman road passes within a few hundred yards to the east of the building and the medieval road to London passes to the west (The Monks' Way).