I remember a film about a British biker gang that kills/robs victims and serves them as meals in a diner. Was kind of campy in that the daily specials were named after the victims (I remember one victim named Poultry with the special being fried chicken or chicken salad). I have found several titles from IMDB but, while there are some similarities to the plot I’ve not been able to find the right one.
The Undertaker and His Pals (1966)
That’s the one. Watched parts of it on Youtube to verify. Not great, but the lack of a title has bugged me for years. Saw it at a drive in originally, wasn’t really concentrating on the movie.
Thanks GG! (PS GG just moved into the #2 position in all-time movie requests solved)!