R18-rated

The R18 certificate represents a film or video classification given by the British Board of Film Classification (BBFC). It is intended to provide a classification for works that are within British obscenity laws, but exceed what the BBFC considers acceptable for its 18 certificate. In practice, this means hardcore pornography.

Under the terms of the 1984 Video Recordings Act all non-exempt videos sold or distributed within the UK must be given a certificate by the BBFC. The distributor must decide whether a video is exempt. Uncertificated recordings are not illegal, regardless of content (except where the content itself is illegal), but supply (i.e. sale, rental, loan or gift) of them is. The R18 certificate is the most restrictive of the certificates.

The R18 classification was created in 1982 in response to the recommendations in 1979 of the Home Office Committee on Obscenity and Film Censorship chaired by Sir Bernard Williams. Originally it was only used for films featuring simulated sex only, but the BBFC found itself forced to award R18 certificates to hardcore films in 2000 after a series of legal appeals and a judicial review of those appeals.

The introduction of the R18 certificate for hardcore films is widely seen by observers as a reaction to more liberal attitudes in British society to pornography, the de facto legalisation of the import of hardcore pornography (but not its sale) across EU member countries because of customs law harmonisation, and the widespread availability of unregulated pornography over the Internet.

Most cuts made by the BBFC are in the R18 category (e.g., 13.6% of R18 videos were cut in 2011, compared with 7.5% for 18, and 0.5% or less for other categories).

The BBFC specifies in detail what kinds of acts are permitted to be depicted in works receiving an R18 certificate, and which are not. In particular, it prohibits:

Although R18 does allow for the depiction of most consensual sex acts such as vaginal sexual intercourse, oral sex, masturbation, anal sex and some moderate BDSM between any combination of men and women, the following is prohibited:

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