After a year of Brexit negotiations, Brexit progress and Brexit polling, public opinion has ended up pretty much where it started:
In hindsight, do you think Britain was right or wrong to vote to leave the European Union?
January 2020: 47% picked wrong
January 2021: 48% picked wrong
Of course, the longer-term trends are what matter and individual polls can be outliers. The longer-term picture is similar, with a move to ‘right’ early last year and then to ‘wrong’ around the time that the Brexit talks looked like they might not result in a deal. There’s a bit of a longer-term trend against Brexit, but so far it’s a modest one.