Richard Adams' Escape from Bekla has some good scenes, other than that I think crime/cop stories are often stronger on bdsm scenes, expecially bondage of course.

Alasdair Gray's 1982 Janine has an amazing scene with a housewife who gets sort of abducted and is forced to a bondage act in a sex club (the typeface of those pages are also unlike anything you've ever seen so it's easy to find if you're leafing through the book :-) ). It's in some sense mimicking s/m fiction, but with a raw elegant power, should be read by anyone who's thinking about the limits of sex writing and the politics of porno.

We used to have Gray's book in the municipal library where I live, and finally somebody stole it of course. Don't ask me which librarian had the courage to make the buy.