Was the documentary "The Life of Riley" ??? or something produced
by BBC ?

The LIFE OF RILEY is IMO a magnificently produced biography connecting BB's life with the tremendous changes in the social
advance of African-Americans in the USA. Fascinating interviews
with a who's who of the music world, and performances spaning BBs
career.

It is available on DVD and BLU-RAY. Unfortunately for folks in the
States, the film has NOT been shown theatrically here (to the best
of my knowledge) and the video is not distributed here. Not surprising since the soundtrack contains a wealth of performances
by BB and others which are under copyright in the US, but PD in most of the world.

The good news is that the BD disc is not zone encoded so viewable
worldwide. The DVD is region 2, so you need a multi-region player.

BB KING - Life of Riley documentary

Best wishes, Thomas.