For air transport, pre-war types were used again to ensure authenticity. As Lord Rivers arrives, he does so in a Pan-Am DC-3 airliner. As the Duchess of York (Maggie Smith) departs for France, she does so in a De Havilland Dragon Rapide biplane airliner. For the climactic final battle, the restored Bristol Blenheim is used to represent Lord Stanley's air-attack, which is also period-correct for RAF deployment immediately before and during the start of the Second World War, for the period at which the film ends.
