sex films in the 1960s, when Tony Tenser opened the Compton Cinema Club in London's Soho. In the 1970s John Lindsay produced numerous short hardcore pornographic films on 16 mm film for distribution on 8 mm film. Lindsay was the first to introduce hardcore films to the Membership Only cinemas when he opened the London Blue Movie Centre in Berwick Street and the Taboo Club in Great Newport Street. Other rival cinemas followed suit, notably the Cineclub 24 in Tottenham Court Road, the Compton Cinema Club, and the Exxon Cinema Club run by David Waterfield in Danbury Street, Islington. Membership Only hardcore film clubs remained legal until the passing of the Cinematograph Act 1982. The end of the 1960s saw the appearance of British sexploitation films in public cinemas, such as Her Private Hell (1968) and The Wife Swappers (1969). Changes to the British cinema certification system in 1970 replaced the previous X rating at 16 with a AA category for those over 14 and a new age for X-films at 18. British sex comedy films appeared in the 1970s, such as Confessions of a Window Cleaner (1974), Eskimo Nell (1975) and I'm Not Feeling Myself Tonight (1976). Combining full frontal nudity and depictions of simulated sex, these films were among the most popular British films of the decade. In the late 1970s David Sullivan produced several low-budget British sex films including Come Play with Me (1977) (directed by Harrison Marks). This was followed by The Playbirds (1978), Confessions from the David Galaxy Affair (1979) and Queen of the Blues (1979), all starring his then-girlfriend Mary Millington. After Millington's suicide in August 1979 Sullivan continued with Mary Millington's True Blue Confessions (1980) and Emmanuelle in Soho (1981). David McGillivray identifies Emmanuelle in Soho as marking the end of the British sex film. While the 1970s were the heyday of exploitation cinema, softcore sex films eventually succumbed to the combination of legalised hardcore pornography in other countries and the widespread availability of home video recorders in the UK. In the early 1980s publisher Paul Raymond was responsible for a small number of softcore films before moving entirely to video. The film Paul Raymond's Erotica (1981) included extensive footage of the 1970s version of The Festival of Erotica show at the Raymond Revuebar, while Electric Blue - The Movie (1982) was a film tie-in based on a series of UK pornographic videos