Wokafans, the B-25s would have been mid-1978 to 1979 - not sure how long all five were there, I saw them during Fanborough week '78.
Never heard of Keith Emerson
Blimey Chevvron, never heard of Emerson Lake and Palmer? The world's most pretentious rock group? Liked a lot of their stuff, but they did try to make a virtue out of grandiose behaviour and music...