Someone did a speech, too at Speakers corner - I think a petition was presented to 10 downing street - you could get closer in those days
Others there that I knew, were: Chris Cortez, Dave Caine, Roger Stafford (St John) RIP probably others I've long forgotten.

I think we were pretty angry that Labour hod not only killed the original Caroline in 1967, but were now jamming RNI/Caroline - trying to make a comeback.