The Cannibal Man (1972)

A young man, Marco, working as a butcher, accidentally kills a taxi driver. His girlfriend Paula wants to go to the police so he has to kill her too. He then has to kill his brother, his brother’s fiancée and his father, who have become suspicious. He gets rid of the bodies by taking them to a slaughter house.

The Cannibal Man was on the official UK video nasties list. Released with 3 seconds cut in 1993.