A fresh and revealing insight into Princess Diana through the personal and intimate reflections of her two sons and her friends and family.

Seventy years on, brothers Colin and Ewan McGregor take viewers through the key moments of the Battle of Britain, when ‘the few’ of the RAF faced the might of the Nazi Luftwaffe. As they fly historic planes, meet the veterans, explore the tactics and technology, Colin and Ewan discover the importance of the Battle and the surviving legacy of the 1940’s campaign for the modern RAF.