I remember enjoying very much this movie, seen when I was a teenager; a kind of gritty erotic drama--or, as a matter of fact, a gritty erotic melodrama, of the naturalist kind. Anyway, Patsy Kensit's sex scenes made it worth watching; I knew the girl from a BBC series (she was the babe in THE GREAT EXPECTATIONS, wasn't she?). Patsy was also, as a smallish girl, in 'Gatsby'--in '74, when she was 6. She looked a bit like Weld.
Patsy also has a sex scene in one of Gibson's romps; but it's a cold and unlikable one (I read it's in the 2nd 'Weapon', and 2 yrs. before '21').