Hanover Street is a 1979 Anglo-American war film written and directed by Peter Hyams, starring Harrison Ford, Lesley-Anne Down and Christopher Plummer.
Set in London during the Second World War, Lieutenant David Halloran (Harrison Ford) an American bomber pilot serving with the Eighth Air Force in the UK and Margaret Sellinger (Lesley-Anne Down) a British nurse meet in Hanover Street in a chance encounter during an air raid
They meet again two weeks later in a secret assignation in Hanover Street. Although she is married, Sellinger and Halloran rapidly fall in love. She tries to resist, but is drawn to the charismatic American. By contrast her husband Paul Sellinger (Christopher Plummer) is, by his own description, suave, pleasant, but fairly dull. A former teacher, he is now a trusted member of British intelligence.
Halloran is subsequently sent on an undercover mission in Nazi-occupied France to deliver a British agent (Lieutenant Wells). At the last moment, Sellinger takes the...