Slade - Australia 1973 BBC Footage?

Slade, Status Quo, Lindisfarne and Caravan 1973

BBC Footage of Slade

Jands sound system was severly tested by Slades operator who took one look at the mixer and said I dont use the meters (or any of the other controls) just push all the faders to the top. After the first show the DBX160 limiters were moved from the mix position to backstage and set to protect the speaker system!
I came across this clip a while back purportedly from their tour down under in the early 70's?
Does anyone know for sure and if so how come the BBC have the footage? and is there anymore?

Видео Slade - Australia 1973 BBC Footage? канала LZJoker