"There isn't really any swearing in this film, nor any sex, and the violence that does occur is not at all realistic, " he tells the BBC News website.

BBC: Killer role for Atonement star Ronan

The MP recommended that books and videos used for sex education in England be given a rating by the British Board of Film Classification before they are bought by schools and local authorities.

BBC: Sex education books must be vetted for content, says MP

An extraordinary sequence, early in the film, highlighting the psychic and emotional impact of gender-stretching sex toys has no follow-up.

NEWYORKER: Pariah