In 1973 he played the troubled Dr. Peter Conway in the science fiction series Moonbase 3 .
His most notable television role was as Thomas Mallen in the drama series The Mallens ( 1979 ) .
In 1973 he played the troubled Dr. Peter Conway in the science fiction series Moonbase 3 , but his most notable television role was as Thomas Mallen in the drama series The Mallens ( 1979 ) .