NF713 takes the form of an extended sequence in which a man tortures a woman psychologically, physically and sexually.  The woman is bound and restrained throughout and the man in question is in a position of absolute power and control over her.  The man tortures the woman in order to make her confess her crimes against an unnamed 'State' but his ultimate aim is to break her down and make her fully compliant, eradicating her individuality and making her a mere number, 'NF713'.  The man employs a variety of techniques ranging from invasive questioning about her body and her sexual life to genital torture with forceps and electricity, makeshift waterboarding, beatings and forced urination.  The torture is unremitting and takes up the majority of the work's 73 minute running time.  Throughout large sections the woman is naked or semi-naked and her nudity is focussed upon, particularly in the later portions of the work.  The work concludes with a series of black and white stills of the woman, bound and restrained.In the BBFC's view, the primary purpose of NF713 is to sexually arouse the viewer at the sight of a woman being sexually humiliated, tortured and abused.  As such it constitutes a 'sex work', which is defined by the BBFC's Guidelines as a work whose 'primary purpose is sexual arousal or stimulation'.  The focus on the woman's naked, humiliated body together with the conventional BDSM aspects of the later part of the work lend credence to the view that sexual arousal is its primary intent, as do the closing series of black and white stills which strongly resemble conventional erotic fetish photography.  The BBFC operates a strict policy on sex works and does not issue classification to such works if they depict non consensual sexual activity (whether real or simulated), the infliction of pain or physical harm (whether real or simulated) or sexual threats, humiliation or abuse that do not form part of a clearly consenting role-playing game.  NF713focuses exclusively on these elements of non-consensual activity, pain, humiliation and abuse and takes the form of a dramatic scenario in which the viewer is invited to believe that what is being shown is 'real'.  Unlike many BDSM works it is not apparent that what is occurring is part of a consensual role play where the roles are clearly set out and, in any case, the Guidelines preclude the kind of strong abuse on offer here, even if consent is established.Even if one were to take the view that the primary purpose of NF713 is to explore the nature of torture in dramatic form, the work would still be in clear breach of the BBFC's Guidelines and policies on sexual violence.  The unbroken sequence of sexual torture and humiliation means that the work runs the risk (whether intentionally or unintentionally) of eroticising sexual violence and thereby causing harm to viewers.  The work invites the audience to relish sight of – and be sexually aroused by - a restrained and helpless woman being sexually molested, humiliated and tortured. Such a complete focus on sexual violence, together with the elements of eroticism provided by the nudity and semi-nudity of the female victim, runs a real risk of eroticising sexual violence in a potentially harmful and dangerous manner.  The BBFC considered the possibility of cuts.  However, given the extent of unacceptable material and the pervasive theme of sexual violence and sexual threat, cuts were not considered a viable option on this occasion.