Henry Cole takes five teams of metal detectorists to Layer Marney in Essex. As they compete to dig up the most historically important finds, they unearth medieval hammered coins, modern-day jewellery and a 2,000-year-old Roman brooch, while Henry tries his hand at magnet fishing.

Henry and the teams are in Hutton in the Forest in Cumbria. In spite of pouring rain and howling winds, they still make some amazing finds, including one very special coin.