Just recently on Channel 78 has appeared 'Now 70s'
In amongst so of the more rubbish 'pap' there are some gems, especially some 1970s rock. Good to see, for example, Thin Lizzys 'Whiskey in the Jar' wasn't the ghastly TOTP version but a live version featuring Eric Bell. I think some of the footage is from the 'Beatclub' sessions in Germany.
There are loads of beat club shows on YouTube.