[Bluecortina]

A fascinating behind the scenes of the Six documentary from 1988

www.youtube.com 

Interesting that the copyright line is BBC Television Training, so presumably this wasn't originally made for broadcast but was shown on BBC2.

Having a look at the Genome listings for the date mentioned in the description, the programme's not mentioned - I'd guess it went out in the Open University slot.

at about 8 minutes in there's footage of the EBU News Exchange (mentioned on paperwork seen on screen as EVN0 - or Eurovision News, I think there were different numbers for different times of day). This was an opportunity for EBU member broadcasters to send their material to the whole network, with each one being switched out in turn. There's a brief shot showing a schematic of the terrestrial network which would have been in use at the time, and the exchange still happened on satellite until a couple of years ago. I believe it's all done by file transfer now.

I still have my copy of the EBU Distribution network from 1985. You need a magnifying glass to read some of it so I expect the original of my copy would have been on a much larger sheet of paper (A1 or even bigger). Looks to cover Kuwait right across to the Canaries.