Peter Paul Wyngarde was a British television, stage and film actor active from the late 1940s to the mid 1990s. He was best known for portraying the character Jason King, a bestselling novelist turned sleuth, in two television series: Department S (1969–70) and Jason King (1971–72). His flamboyant dress sense and stylish performances led to success, and he was considered a style icon in Britain and elsewhere in the early 1970s.

Department S is a British spy-fi adventure series, produced by ITC Entertainment. It consists of 28 episodes which originally aired in 1969 and 1970. It stars Peter Wyngarde as author Jason King, Joel Fabiani as Stewart Sullivan, and Rosemary Nicols as computer expert Annabelle Hurst. These three are agents for a fictional special department of Interpol. The head of Department S is Sir Curtis Seretse.