[EDITED for a calculation mistake – sorry!]
SkyData released this turnout by age group table for which I could not find background or research supporting it.
If these numbers were true, this would be the voter structure (weighted by the UK’ population structure – as of Wikipedia):
This indicates that there were THREE TIMES the number of old geezers compared to kids at the polling booths; when you combine this voter structure with the known Remain percentage and add it all up, you get a Remain total of 49.2%,
which is wrong, but not by much. Given the other numbers are rather well researched, my conclusion is that the turnout by age is slightly off but credible.
This therefore means that the problem of the Remain camp was NOT that old people “stole the future” from their kids: had each age group contributed at the same rate of the oldest group, Remain would have won with nearly 60% of vote.
Does anyone have a better source for turnout by age group?