Channel 4, in common with the other main British stations broadcast on analogue, airs a highly comprehensive range of programming. It was established in 1982 with a specific intention of providing programming to groups of minority interests, not catered for by its competitors, which at the time amounted to only the BBC and ITV.
Sorry, no info about the next episode of Channel 4 (UK) Documentaries is available yet.
The TV show is either in vacation or waiting to start their new season. When information about future episodes becomes available, it will be posted here.