Throughout the 1970s, he worked continuously in theatre and film, appearing in many Royal Court productions including the award-winning musical, The Rocky Horror Show creating the role of Brad Majors.

[1] He appeared in films including The Empire Strikes Back (as Zev Senesca, the Alliance pilot who locates and rescues the stranded Luke Skywalker and Han Solo on planet Hoth), Reds, Ragtime, Superman III, Labyrinth, and Highlander.

[2] In 1978, Malcolm began his producing career with Pal Joey, which was successfully transferred to the West End in 1980 and was nominated for best Musical Revival in the Laurence Olivier Awards.

[9] Other British productions throughout this time include The Pajama Game, Footloose the Musical, and the award-winning Single Spies written by Alan Bennett which had a very successful year at the Queen's Theatre.

He had maintained his interest in acting as well, appearing on 11 episodes of Absolutely Fabulous as Saffy's father, Justin, and in the BBC2 film, Daphne as Nelson Doubleday.