That man, Rex Malik, participated in (among other things) the 1982 BBC series “The Computer Programme” (https://en.wikipedia.org/wiki/The_Computer_Programme), typically in a small section at the end on an episode but also as narrator in other parts and is credited as “Programme Adviser”:

Episode 1 - “It’s Happening Now”: https://www.youtube.com/watch?v=jtMWEiCdsfc

Episode 4 - “It’s on the Computer”: https://www.youtube.com/watch?v=UkXqb1QT_tI

Episode 5 - “The New Media“: https://www.youtube.com/watch?v=GETqUVMXX3I

Episode 10 - “Things to Come”: https://www.youtube.com/watch?v=rLL7HmbcrvQ