Its Teresa May that leads the country so anything could have happened but although I don't know much about politics I think it was because of the refugees from Africa area rather than Hungary, Poland etc and people voted yes thinking these people would be sent back to own country not stopping to think about the other problems we would have financially? I was a no voter.
Possibly not. Even so, as relative impoverishment becomes apparent the UK is likely to rejoin the EU. This may be through Northern Ireland exercising its options under the Good Friday Agreement to join the Republic, Scotland choosing independence within the EU, and England and Wales joining for the first time as a smaller, although still important, EU member. The history of the British Isles between now and about 2040 is likely to be very interesting.
Possibly not. Without the Enlargement of 2004, the British public would not have noticed the "freedom of movement" provisions so much and would not have seen what looked like a sudden flood of eastern European immigration. As we voted for Brexit by a small margin, that could have swung it.
My guess would be 'no'. The EU was around for a long time without many complaints. It's the expansion into eastern Europe and to some degree the invention of the Euro as a universal currency that launched the discontent.