Longest  running TV documentary - single subject
Up series
United Kingdom
The Up series is a British documentary strand which returns to the same set of individuals at seven year intervals to see how their lives have developed. The series began on the 5th May 1964 with Seven UP! (ITV), part of Granada’s World in Action current affairs series, in which a group of fourteen 7-year olds were interviewed about their lives and their desires. The series has inspired similar projects in many different countries and – in the UK programme The 50 Greatest Documentaries (C4 2005) - the series was voted the ‘Best Documentary of All Time’.