Interesting. Polls are notoriously unreliable of course but I found this:
https://whatukthinks.org/eu/question...ld-you-vote-2/
The referendum was in June 2016, you can see how close the polls were then and they're bouncing around a bit between Leave and Remain.
It's interesting that in 2012 there seemed to be quite a strong sentiment to leave the EU.
Around the time of the Referendum it was very close.
Now it looks like there's actually more of a pro-EU sentiment, but you've obviously seen different data.
It just seems inherently stupid to take an action with such long lasting consequences (which could be for good of course, long term, we don't know yet) based on a one off snapshot of public opinion. Especially when the result was so close. At least the 1975 referendum to stay in the Common Market had a 67% yes vote so it was nice and clear. A 52/48 split either way was obviously going to cause a lot of resentment - especially when they took so long bumbling around not being able to agree what Brexit actually meant :doh: