London: Erotic thriller 'Fifty Shades of Grey' has been given an 18 certificate by the British Board of Film Classification (BBFC).

The adaptation of EL James's bestseller has been given the rating for "strong intimate scenes", the BBFC explained.

"The film contains strong intimate scenes and nudity, along with the portrayal of erotic role play based on domination, submission and sado-masochistic practices.