The first appearance of actor Derek Fowlds, who would become a familiar face on British TV in the 1980s as Private Secretary Bernard Woolley in Yes, Minister and later Yes Prime Minister.
Derek Fowlds already had twelve prior acting credits to his name so this could not have been his first appearance as an actor.
Richard Hurndall (Mr King) played the first Doctor in Doctor Who: The Five Doctors (1983) opposite Jon Pertwee (the third Doctor). Jean Marsh (Elspeth McRae) was married to Jon Pertwee from 1955-1960. Jean Marsh also appeared as in 15 episodes of Doctor Who in the mid 1960s as well appearing as an uncredited extra in the Doctor Who 50th anniversary special 'An Adventure in Space and Time' (2013).
Also, Annette Andre (Sue) appeared in one episode of The Prisoner (1967), a show that Anton Rodgers also appeared in (although they weren't in the same episode).
Also, Annette Andre (Sue) appeared in one episode of The Prisoner (1967), a show that Anton Rodgers also appeared in (although they weren't in the same episode).
This episode has 50 without commercial time.