Sylvia Anderson first episode of a series then sharing the work according to their strengths. Gerry tended to specialise in special effects and hardware, and Sylvia in character, voices, costume, dialogue, and plotlines. In this way, Anderson contributed plot development and voice work for a series of half-hour shows including "Supercar", "Stingray" and "Fireball XL5". However, she felt the half-hour format was insufficient to fully develop characters and stories, and she persuaded the team's TV producer Lew Grade to extend their shows to a full hour. In the early 1960s, the Andersons co-created the series "Thunderbirds", and Sylvia created the characters. She
UFO (TV series) element. The first Selectric was released in 1961, eight years before the series was produced. Two years after the 26 episodes were completed, the series was syndicated on American television and the ratings were initially promising enough to prompt ITC to commission a second season of "UFO". As the Moon-based episodes appeared to have proven more popular than the Earth-based stories, ITC insisted that in the new season, the action would take place entirely on the Moon. Gerry Anderson proposed a format in which SHADO Moonbase had been greatly enlarged to become the organisation's main headquarters, and pre-production on "UFO