This is the first episode of a documentary series called Funny Business [1].

The fifth episode is also on Youtube [2]. Does anyone have links for the others, I haven't been able to find any...

Edit, found the fourth [3] and sixth [4]

[1] https://en.wikipedia.org/wiki/Funny_Business_(TV_series)

[2] https://www.youtube.com/watch?v=bICuqEHWS8Q

[3] https://www.youtube.com/watch?v=3PNeOifT6kI

[4] https://vimeo.com/438865608