British director of Her Private Hell, Satan's Slave, Prey, Inseminoid, Terror and many more.
I'll start with this ....
Prey (1977)
A couple who I can honestly say 'identify as female'
have their rural idyll shattered by the intrusion by the taciturn Anderson, who limps his way into the household, a quainter film than I remember ... budgetary restraints I fear ... accounts for some of this ahem
Still there are delights a plenty imo.
Warren's work deserves more notice.