Slightly off topic! Familiar prop used in episode of Space 1999!
 

I have always been a fan of the show Space 1999 ever since i was very young, well season one anyway, since the second season sucked!
And Victor was always my favorite, as he was a left handed geek, like myself, well, they have been running the episodes over and over on YT for a long time, and that is when I spotted it!

Episode, "Black Sun", the moon gets pulled into a black hole, the Alphans employ desperate measures to stay alive,they use an experimental force field protect Alpha.

It's when Victor is explaining the shield that I spotted it...
http://suzaku.live-evil.org/aaf-spac..._10.31.936.jpg

That looks a LOT like the safety glass from a 21 inch color roundie, does it not?! :D

It does look like a safety glass.

However two things go against this theory:

1) I do not think Canadian actor Barry Morse (who is also known as Inspector Philip Girard from the Fugitive) had such narrow shoulders. I think the glass is a bit larger in diameter than 21"

2) British television began colour PAL broadcasting in 1967, a bit after the roundy era. I do not believe, apart from a few experimental sets, that any consumer roundies were sold in the UK.