Some British moviegoers had issues with such films released in 2011 as The Hangover and Twilight sequels but no movie drew more complaints than the ballet drama Black Swan.
The reason for many of the complaints is the lesbian sex scene between Natalie Portman, who won a best actress Oscar for her performance, and her co-star Mila Kunis.
The British Board of Film Classification unveiled its annual report this week which states that the film drew 40 complaints about the scene which includes oral sex.
Some people felt the scene 'was pornographic in nature.'
'It is a fairly strong scene, but it’s not anything like above the line,' BBFC Director David Cooke tells The Independent. 'We felt Black Swan was in the boundary of a sex scene for a 15 rated film.'
Some respondents suggested that homosexual sex should be restricted to the 18 category.
Cooke said the BBFC would consider that a double standard.
'We have a clear policy in the guidelines that we don’t differentiate or discriminate whether it’s a straight or gay or lesbian scene,' he said.