The decision was highly controversial, and some suggested changing the law under which it was rated 18.The original X certificate, replacing the H certificate, was issued between 19 by the British Board of Film Censors in the United Kingdom.Moreover, many newspapers refused to advertise X rated films.This led to a number of films being released unrated sometimes with a warning that the film contained content for adults only.The Australian Classification Board (ACB formerly known as the OFLC), a government institution, issues ratings for all movies and television shows exhibited, televised, sold or hired in Australia.Material showing explicit, non-simulated consensual sex that is pornographic in nature is rated X18 .The commission has some leeway in classification, it may for instance take into account the artistic qualities of a movie not to count it pornographic.Movies with an X rating may only be shown in specific theaters (which hardly exist nowadays in France); they bear special taxes and tax rates, including a 33% tax on revenue.
Sometimes the rating of a film has changed significantly over time.
It was introduced as a result of the Wheare Report on film censorship.
From 1951 to 1970, it meant "Suitable for those aged 16 and over," and from 1970 to 1982 it was redefined as meaning "Suitable for those aged 18 and over".
(Films that achieved critical and commercial success were later re-rated R after minor cuts, including Midnight Cowboy and A Clockwork Orange.) The threat of an X rating also encouraged filmmakers to re-edit their films to achieve an R rating; one notable example of this was the 1987 satirical action film Robo Cop, which had to be edited eleven times before it could attain an R rating.
Because the X rating was not trademarked, anybody could apply it to their films, including pornographers, as many began to do in the 1970s.