Heroes Miniatures was a 1980s company that produced fantasy, sci-fi and historical figures. Much of their inventory was sold through Tabletop Games. They also produced modern warfare figures. The company was bought by Liberation Models and then passed on to RH Models.  Address: 7 Waverley Place, Worksop, Notts., England, UK
It is possible that some of the Heroes Miniatures figures briefly became owned by Plastiform around 1987.