At IWM's flagship site in Lambeth Road, London, a team is racing to complete an ambitious set of new galleries dedicated to telling the story of the Second World War and the Holocaust in a new way. Cameras also focus on IWM Duxford, where the museum's rare Mark 1 Spitfire is being serviced. It's undergoing a rigorous test flight to check it's ready to take to the skies for the first airshow of the season.