World War II has probably inspired more films, plays, novels and documentaries than any other 6-year period in history. But there's no substitute for the accounts of the people who were there. Now, with the last participants in their nineties and even older, those first-hand accounts are coming to an end. A couple of years ago, the documentary Spitfire told the story of the fighter planes and their pilots who won the Battle of Britain, and inspired the nation to help win the Second World War. But it was later British planes - the Lancaster bombers - that did much of the heavy lifting, and their story is finally told in Lancaster. It's likely to be the last eye-witness account to be made about the War. Like Spitfire it was co-directed by David Fairhead and Anthony Palmer. Simon Morris talks with Anthony Palmer on the line from the UK. Lancaster is released throughout the country on September the 1st.