The Cambridge Archaeological Unit (CAU) carried out exploratory investigations south of Grafham Water between 2012 and 2015, including geophysical survey, cropmark transcription, field walking, trial trenching, and finally open area excavation of four sites totalling 2.88 ha. The areas are labeled Areas 1–4. The excavations revealed farming settlements occupied from the Middle Iron Age through to the Roman period—along with two isolated cremations dating to the Middle Bronze Age.