A single ditch was identified during monitoring of construction works for a new block of classrooms at Walsham Le Willows Primary School, orientated approximately east-west along the southern edge of the proposed raft foundation for the new building, with a row of small postholes just to the north of it. No dateable evidence was found within any of the features and the ditch and posthole alignment does not appear on any Ordnance Survey map of the area. It appears likely that the features were either contemporary with each other or one was a replacement of the other but that they both marked the same boundary line.