Character mistake: On the train at the beginning of the movie, Colin Firth is talking to Nicole Kidman about Warrington. He states that George Formby was from Warrington and not from Wigan or Formby as people believe. George Formby was born in Wigan.
Factual error: Overhead wires are seen at the The Royal Border Bridge at Berwick-on-Tweed. These were not built until 1989.