John Hamill
Television appearances included: "Crossroads" , "The Shadow of the Tower" , "" , "The Venturers" , "1990" , "Doctor Who" ( in the serial "The Ribos Operation" ) , Dennis Potter's play "Double Dare" , and "The Professionals" . He left acting in the late 1980s , and went on to run a pine furniture shop . 
<triplet> The Ribos Operation <subj> Doctor Who <obj> part of the series