Tanith Lee. Definetely. She's a Brithish author. I've found all of her books to be quite entertaining. She has nearly 90 of them. You may have seen some of her children's books out, but her horror is just as magnetic. Try, The Secret Books of Paradys, or the Secret Books of Venus. She's also very good at rewriting fairy tales. I am currently reading Snow White, Blood Red.
For a new twist on werewolf fantasy, try "The Wolf's Hour" br Robert R. McCammon. For Vampires, Freda Warrington has an interesting series that begins with "A Taste of Blood Wine"
~Ash
PS. Any further recommendations I'm going to try out myself!