Four actors who each became well known for a particular role on British television had supporting parts in "Quatermass II". Rupert Davies who played MP Vincent Broadhead would go on to find fame as Sûreté detective Commissaire Jules Maigret, the title character of 1960s TV series "Maigret", based on Georges Simenon's novels. Roger Delgado, who found fame in the 1970s as the Master in "Doctor Who" (1971–73), played a journalist who helps Quatermass before falling victim to "the mark" in episode four. Wilfrid Brambell, later star of the sitcom "Steptoe and Son" (1962–74), appeared as a tramp. and Melvyn Hayes, who played the small role of Frankie, later worked in several films with Cliff Richard.