Archaeological trial-trenching evaluation was conducted at Kingswode Hoe School before the proposed cpnstruction of an extension to the north-east of the main school buildings. The school lies at the south-western edge of the nationally important Late Iron Age settlement at Sheepen, the pre-Roman capital of the Catuvellauni, which is portected as a scheduled monumnet (SM 57)

One trench measuring 6m x 1.2m was excavated at right angles to the projected line of the Sheepen Dyke extension. The trench recorded a prehistotric pit and the south-eastern edge of a large late Iron Age ditch whose fill contained pottery dated to the first half of the 1st century AD. This ditch is identified as part of the Sheeopen Dyke extension, running 10m to the north-west of its projected line and across the south-east of the proposed extension. Despite the presence of modern disturbances, the Late Iron ditch has survived largley intact.