2 English girls cycling in France, I think one of them is kidnapped and raped, by it turns out to be the police man who lives in a caravan in the woods. I remember this being on a few times when i was younger.
I remember it too, Michele Dotrice was one of the cyclists and that french actor out of Crossroads was in it too. I think it's "And Soon The Darkness". See: http://www.imdb.com/title/tt0065398/
not much help I'm afraid, but reading your question jogged my memory. It was deffo Michele Dotrice and another actress, but was a brill film as I recall. Many many years since I watched it but would love to see it again so will be checking on all your replies.
You can buy this on DVD region 1 at www.videouniverse.com, a great film, one of those british thriller type movies that seems to be overlooked. Still have it on video when ITV went into all night mode.