I can see people regretting having voted for exit. On the BBC I actually saw and heard someone ask for another referendum.
I think a referendum for Brexit should have required a minimum voting of 80% for a consensus. 80% of the let us just assume 45 million who voted. That requires a nay or yeah vote count of at least 36 million people. This referendum fell far shot off the consensus mark. It was like the uninformed carried the day. Now a fraction or faction has taken a big decision without having the entire population behind it.