Filmed in Supermarionation

Filmed in Supermarionation is a 2014 British documentary film about the making of the Supermarionation puppet productions of Gerry and Sylvia Anderson. Produced and directed by Stephen La Rivière, and based on his book of the same name, it was released theatrically in the UK on 11 October 2014, having premiered at the British Film Institute on 30 September 2014. The film was favourably received by critics and was later released on DVD and Blu-ray.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.