Edit: The study linked above [0] showed the following for voter regret (specifically "do you have doubts about the way you voted?"):
Remain
Yes / No / Don't Know
98% / 1% / 1%
Leave
Yes / No / Don't Know
90% / 6% / 4%
[0]: http://www.britishelectionstudy.com/bes-resources/brexit-bri...
The treatment of leavers by remainers has been frankly disgusting. Accusing them of being racists, stupid, and various other things. Brexit has made them lose their minds. They simply refuse to believe their are people who would vote brexit for reasons other racism. I know many people who voted for brexit on informed reasons, that have nothing to do with racism.
What do you mean exactly?
> The treatment of leavers by remainers has been frankly disgusting
Completely agree. The whole thing of people taking sides, rather than discussing a political issue, has been absurd and awful.
> voted for brexit on informed reasons
Unfortunately this was badly communicated, the media's fault no doubt. It was genuinely quite difficult to find a reasoned, balanced view (especially on the leave side I have to say).