I think I actually went to one of the last ones, not a huge racing fan, but my memory seems to suggest I enjoyed the day even if it was a couple of seconds of 'zoom' and then waiting ten minutes for them to pass by again lol
My brother was a marshal for all of them. I even went to the “on the streets” event in the early 80s organised by Martin Hone before they were allowed to have the race. I remember James Hunt blasting a Jaguar D type up Essex Street way above the limits.
I would definitely go to see it if we are fortunate to get it.