Factual error: Above their bed in the French hotel is a photo of a Boeing 747 which didn't fly for the first time until 1969, after the setting of this movie.
Factual error: The scene where the main characters go to Walthamstow Dogs has an error. The advert above the traps is for the "Racing Post" which was only started in 1986. The only racing newspaper of 1961 would have been "The Sporting Life." (01:03:00)
Factual error: Jenny would not have received a letter telling her she had been successful in applying to Oxford University as shown at the end of the film. As an undergraduate she would have received a letter from one of the Oxford colleges to which she had applied informing her she had been accepted to that college.