Some British television programs, particularly those made by or for ITC Entertainment, were shot on colour film before the introduction of colour television to the UK, for the purpose of sales to U.S. networks. The first British show to be made in colour was the drama series "The Adventures of Sir Lancelot" (1956–57), which was initially made in black and white but later shot in colour for sale to the NBC network in the United States. Other British colour television programs made before the introduction of colour television in the UK include "Stingray" (1964–1965), which was the first British TV show to be filmed entirely in colour, "Thunderbirds" (1965–1966), "The Baron" (1966–1967), "The Saint" (from 1966 to 1969), "The Avengers" (from 1967 to 1969), "Man in a Suitcase" (1967–1968), "The Prisoner" (1967–1968) and "Captain Scarlet and the Mysterons" (1967–1968). However, most UK series predominantly made using videotape, such as "Doctor Who" (1963–89; 2005–present) did not begin colour production until later, with the first colour "Doctor Who" episodes not airing until 1970. (The first four, comprising the story "Spearhead from Space", were shot on film owing to a technician's strike, with videotape being used thereafter.)