I remember those games clearly. I`m a lot older than most on here. The program was called The Master Game and I have a book and videos of all the games.
The players commented on all the moves (This was obviously dubbed on afterwards).
This was in 1980 and in the final Nigel Short beat Tony Miles.
Keane did take part but he also commentated.
Another series followed but it was called something else and took place somewhere abroad. In this one Karpov, Kasparov, Spasky and all the other top players took part. I expect you can guess who won this.
David