In 1976, the film inspired residents in Notting Hill to declare independence from the UK and to appeal to the UN for protection as 'Frestonia'. They produced their own stamps and passports.

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The film is jokingly "dedicated to the memory of" post-Second World War clothes rationing, which had ceased the month before its release.

Set in the summer of 1947, Passport To Pimlico was filmed the following year. It's schedule was delayed and budget increased due to the inclement weather prevailing that year.