"Or, How I Flew from London to Paris in 25 Hours 11 Minutes" is a 1965 British comedy film starring Stuart Whitman, Sarah Miles, Robert Morley, Terry-Thomas and James Fox, directed and co-written by Ken Annakin.
Based on a screenplay entitled Flying Crazy, the fictional account is set in 1910, when Lord Rawnsley, an English press magnate, offers £10,000 (equivalent to £920,000 in 2015) to the winner of the Daily Post air race from London to Paris, to prove that Britain is "number one in the air".
Reference: Wikipedia