So no more F1 Grid Girls and no scantily clad, fit birds leading the darts chaps out

[Burney]

https://www.theguardian.com/politics...n-study-corbyn

While reassuring, I do still worry about how many more of the 30-40 demographic (where the real surge came) will have been mobilised by Labour's social media efforts by the time of the next election.

I did. Are we sure it was down to social media efforts? Only I would suggest that the surge from that generation - i.e. your generation - of middle-class lefty types is from the social demographic that's also the most notably angry and unforgiving about Brexit. That would seem to me to tally with my 'protest vote' theory.