Lord West tells the story of how Britain and the Royal Navy came to focus heavily on the North Atlantic in the late Cold War. During his time in the Royal Navy, the focus was very largely on the North Atlantic. And Lord West returns to North Norway to see the Royal Marines training and explain how that region came to be a central focus during the late Cold War. He hears about the secret world of submarines. And he joins a patrol onboard a Fisheries Protection Vessel to tell the story of a war with a supposed ally - what one enterprising journalist at the Daily Express christened the 'Cod War'. Producer: Giles Edwards.