The manor of Hedingham was awarded to Aubrey de Vere I by King William the Conqueror by 1086. The castle was constructed by the de Veres in the late 11th to early 12th century and the keep in the 1130s and 1140s. To accommodate the existing castle, a large ditch was cut through a natural spur westward into the Colne Valley in order to form a ringwork and inner bailey; an outer bailey extended south further into the valley and what is now the modern village of Castle Hedingham. The stone keep survives in a very good state of preservation and is open to the public.
The keep is nearly square: the east and west sides are 53 ft (16 m) long and the north-south sides about 58 ft (18 m). It stands more than 70 ft (21 m) tall; (the turrets rise an additional 15 to 25 ft (4.6 to 7.6 m) above the parapets)  and it commands the countryside around it from its elevated position atop the ringwork. The walls are about 11 ft (3.4 m) thick at the base and average 10 ft (3.0 m) at the top. They are constructed from flint rubble bound with lime mortar, but, very unusually for an Essex castle, are faced with ashlar stone transported from a quarry in Barnack, Northamptonshire.
Members of Mandy who have worked for Hedingham Castle