BBC Prog Rock Britannia - Full length TV Documentary

BBC Prog Rock Britannia an Observation in Three Movements. Yes, Genesis, ELP - Emerson Lake & Palmer, Soft Machine, EGG, King Crimson, Procol Harum, Caravan and interviews with Rick Wakeman, Steve Howe, Bill Bruford, Carl Parmer, Mont Campbell, Phil Collins, Pete Sinfield, Tony Banks, Mike Rutherford, Arthur Brown, Robert Wyatt, Gary Brooker, Mike Oldfield, Jonathan Coe, Ian Anderson, Bob Harris