It appears as if this film has made the rounds: several different releases under several different titles. The one I saw is called "Victorian Fantasies" released by the now-defunct Private Screenings Video. A silly little endeavor, but consistent with the mid-seventies European vogue for nudie stuff. Storyline: a prim-and-proper English stuffed shirt tries everything to seduce and dis-robe a prim-and-proper Victorian lady. With each attempt, everyone else around him gets naked, until he finally succeeds... and she doesn't resist at all! Actually, she looks great! (I'm assuming she's Sue Longhurst) Lots of brief (but full) nudity, and un-sexy simulated sex scenes. In my books, it doesn't quite make it to "soft-core" status. If you can find it at your local video rental, then give it a look. Just don't go out of your way.
Review of Tickled Pink
