Gerry Anderson Associated Television (ATV) boss who offered to buy the show. This began a long friendship and a very successful professional association between the two men. The new series, "Supercar", (1960–61) was developed by Gerry & Sylvia Anderson and Reg Hill based on a story written by Sylvia Anderson and marked several important advances for APF. Sylvia Anderson took on a larger role and became a partner in the company. The series was also the official debut of Supermarionation, the electronic system that made the marionettes more lifelike and convincing on screen. The system used the audio signal from pre-recorded tapes
Gerry Anderson October 1963. This real-life drama inspired Anderson to create a new programme format about a rescue organisation, which eventually became his most famous and popular series, "Thunderbirds" (1964–1966). The dramatic title was inspired by the letter Anderson's older brother Lionel had written to his family during World War II. Grade was very enthusiastic about the concept and agreed to back a series of 25-minute episodes (the same length as "Stingray"), so the Andersons scripted a pilot episode, "Trapped in the Sky", and began production. Gerry initially wanted actress Fenella Fielding to perform the voice of Lady Penelope, but Sylvia convinced