To mark the 70th anniversary of 1940, presenter and archaeologist Jules Hudson goes on a journey of discovery into Britain's darkest and, in the words of Winston Churchill, 'finest hour'.

Battle of France and Dunkirk
Jules and his team are in France digging up crashed German aircraft from the opening months of World War Two, accompanied by an RAF fighter pilot who saw action there in 1940. A Dunkirk veteran recounts the horrors of the evacuation, while Jules makes some revealing finds on the beaches of Dunkirk - poignant reminders of Britain's most perilous year. Featuring aviation archaeologists Steve Vizard and Gareth Jones; Peter Ayerst DFC, the last living pilot of the RAF's 73 Squadron, who were in France in 1940; and Richard Sampson, veteran of the 1940 Dunkirk evacuation.