Peter Dyneley (13 April 1921 – 19 August 1977) was an Anglo-Canadian actor. Although he appeared in many smaller roles in both film and television, he is best remembered for supplying the voice of Jeff Tracy for the 1960s “Supermarionation” TV series Thunderbirds and its two film sequels, Thunderbirds Are Go (1966) and Thunderbird 6 (1968), all produced by Gerry Anderson. Uncredited, Dyneley also provided the voice of the countdown that introduces the Thunderbirds title sequence. Born in Hastings, Sussex, England, Peter Dyneley spent his early years in Canada but was educated at Radley College in Oxfordshire, England. He possessed dual nationality (Canadian and British) and served in the Royal Canadian Navy during the Second World War. After the war, he attended the Guildhall School of Music and Drama in London, where he studied opera and developed his bass voice. It was at this institution that he made the acquaintance of fellow student Christine May, whom he later married. They had two children, Richard and Amanda. With his Canadian background, Dyneley frequently performed with a North American accent. He acted primarily in stage productions prior to 1954, when he turned his attention to film. On stage and in film, he regularly appeared opposite his second wife, the actress Jane Hylton, whom he met on the set of the horror film The Manster (1959). He also appeared as a guest star in many television series. He spoke fluent French, German and Spanish and was 5 feet 11 inches (1.80 m) tall. Dyneley died of cancer on 19 August 1977, Hylton of a heart attack 18 months later, on 28 February 1979.