With regard to A Serbian Film in the UK:
The film was due to screen on 29 August 2010 at the Film Four FrightFest in London, UK but was pulled by the organizers following the intervention of Westminster Council. Films shown at this festival are usually shown pre-certificate but in this case Westminster Council refused to grant permission for its exhibition until it had been classified by the BBFC. Following its DVD submission to the BBFC (there were no theatrical materials available in the time frame requested for a proper theatrical classification), 49 cuts totaling four minutes and eleven seconds were requested for DVD certification. The UK distributor, Revolver Entertainment, initially looked into the possibilities of the process, but it became clear that the film would then have to be resubmitted to the BBFC and further cuts may then have been required. It was decided that to show a heavily edited version was not in the spirit of the festival and consequently its exhibition was pulled from the schedule. The film was replaced at the festival by Rodrigo Cortés' Buried starring Ryan Reynolds.^
And
^ The film had a limited release in UK theaters on 10 December 2010 in the edited form (99 minutes), with four minutes and eleven seconds of its original content removed by the British Board of Film Classification due to "elements of sexual violence that tend to eroticize or endorse sexual violence."[20] A Serbian Film thus became the most censored cinema release in Britain since the 1994 Indian film Nammavar that had five minutes and eight seconds of its violent content removed.
The film had a limited release in the United States on 6 May 2011, edited to 98 minutes with an NC-17 rating. It was released on VOD at the website FlixFling on the same day, except only slightly edited to 103 minutes.^
(Via https://en.m.wikipedia.org/wiki/ASerbiann_Film)
It's banned in several countries. I'd like to see it removed from circulation entirely, but whilst I'm dreaming, I'd like a manticore.