“When [the Monty Python film] was released 30 years ago it was described as a motion picture destined to offend nearly two-thirds of the civilised world and severely annoy the other third. In 1980, Glasgow councillors agreed and refused to allow it the 15 certificate agreed by the British Board of Film Censors. Instead they insisted it could only be shown as an X-rated adult movie, resulting in it never being screened in the city.”