Battle of Britain is a 1969 British Second World War film directed by Guy Hamilton, and produced by Harry Saltzman and S. Benjamin Fisz. The film documents the events of the Battle of Britain. The film drew many respected British actors to accept roles as key figures of the battle, including Laurence Olivier as Air Chief Marshal Sir Hugh Dowding, Trevor Howard as Air Vice-Marshal Keith Park, and Patrick Wymark as Air Vice-Marshal Trafford Leigh-Mallory, Air Officer commanding No. 12 Group RAF. It also starred Michael Caine, Christopher Plummer and Robert Shaw as Squadron Leaders. The script by James Kennaway and Wilfred Greatorex was based on the book "The Narrow Margin" by Derek Wood and Derek Dempster.