From Wikipedia, the free encyclopedia. Clinton Greyn (29 September 1936) is a Welsh-born actor noted for his appearances in British television series of the 1960s and 1970s. He made his film debut in the 1961 short Wings of Death, and went onto appear in such popular British TV series as Z-Cars and Compact. His career progressed to a prominent role opposite Stanley Baker in Peter Yates' crime caper Robbery (1967). This led to him getting his own TV series in 1968, Virgin of the Secret Service, ...