In the second Castle in the Country location, John Craven and Gloria Hunniford explore the treasures in and around Berkeley Castle in the beautiful Cotswold countryside of Gloucestershire. John gets a lesson in marine archaeology from Dr Mark Horton, while Gloria takes to the dining room with a very rare dinner service. Chef Matt Tebbutt bravely tackles a dish made from one of the world's smelliest cheeses, and Christine Bleakley has a go at the Gloucester tradition of cheese-rolling.