RAF Bovingdon substituted for the fictional RAF Sutton Craddock bomber airfield. The riverbank where Robertson's character romances Maria Perschy was Hurley Lock on the river Thames and was also used in a similar early scene in the Bond film "From Russia with Love". Some scenes were filmed at Staverton Airport, Gloucestershire, and the nearby Churchdown Hill could be seen in some shots. The pub in which the aircrew relax was The Three Compasses in Aldenham, Watford, which still exists as a pub today.