Quite an unusual one compared to Hammer films standards on the witchcraft thematic (The devils ride out...), a very weak story but glamorous, sexy and partly goth atmosphere with a pleasant British style. According to me still better than the pornographic "Nude for Satan" (1974) but it does not beat movies such as "Necromancy" (1972) or Pier Carpi's "ring of darkness"
This early 70s British exploitation film about a lesbian witch who lures young women to an isolated estate in order to use them as sacrifices for her coven, is soft core porn disguised as a horror film. Predictably there is little plot and the film meanders through an aimless story that is basically an excuse for women to take their clothes off. Use of color and lighting is interesting, though.