Dr Barnes Wallis, the man whose faith in the low-level 'bouncing' bomb was a key factor in the success of the historic raid by the Dam Busters on the Moehne Dam in the Second World War, in London during a reunion of members of the famous Dambusters squadron. He is speaking to Richard Todd, right, who starred in "The Dam Busters" film as Wing Commander Guy Gibson, at the Warner Theatre, Leicester Square, where a special screening of the film was part of the Dam Buster weekend reunion.