Okay -
THE HAUNTING (Warner) US disc - region free.
NOSFERATU (Masters of Cinema)
THE WOMAN IN BLACK (Momentum)
ISLAND OF LOST SOULS (Eureka)
If you're in the mood for classic horror/comedy:
ABBOTT AND COSTELLO MEET FRANKENSTEIN (Universal) US disc - region free.
YOUNG FRANKENSTEIN (20th Century Fox)
I can second the recommendations for QUATERMASS AND THE PIT and THE INNOCENTS - I've seen them both and the blu-rays are superb.

The UNIVERSAL MONSTERS COLLECTION, JAWS and PSYCHO are all very worthwhile purchases, Monsterguy95.

Knight of the Living Dead