Felicity Sentance

A family of vampires takes over an estate known as Carfax Abbey. Since inbreeding is destroying the family line, they need new blood to keep the family going, so they set out to find new sources. (imdb)

While living rough on the streets of London's East End, a young man, Dink, encounters the beautiful and mysterious Dee. Concerned for Dinks welfare, she invites him to stay with her and get off the streets. The two soon develop a curious relationship which oscillates, often without warning, between sexual intimacy and raging jealousy. As tenderness gives way to cruelty, they become consumed by darkness and their relationship spirals out of control. (BFI)