THE FREAKMAKER (1974)

  If you take the classic 1930s movie FREAKS and add in a FRANKENSTEIN-ish mad-doctor(Donald Pleasence who instead of trying to reanimate the dead is trying here to splice human and plant DNA for some reason which just results in Venus flytrap monsters)  you would get this weird 70s British horror flick. 70s DR. WHO himself, Tom Baker under some heavy ugly facial makeup, is the leader of the carnival freaks which include a few midgets, that black "Popeye" fellow who can make his eyes bulge out of his head and of course Dr. Pleasence's rejected experiments.   A strange grimy little English oddity that doesn't get much attention but is worth a gander. AKA THE MUTATIONS