Countryfile - 08/05/2011

Julia Bradbury and Matt Baker head to Cornwall to explore the Penwith Peninsula, mainland England's most westerly point. Matt takes to the water with an artist who uses a kayak to search out inspiration for her stunning seascapes, while Julia uncovers a tasty way of getting rid of one of our most invasive plant species when she cooks up a dish of Japanese knotweed. Meanwhile, John Craven investigates whether city traders are driving up the price of food by speculating on the commodity markets, and Adam has his hands full when he transfers the latest batch of newborns from the lambing sheds into the great outdoors. Plus Katie Knapman finds out how a herd of goats are the secret weapon in the battle to safeguard some of our most precious maritime history.