Polls also suggest Britain remains divided on Brexit.
However, a Savanta survey published in January shows that nearly two-thirds of Britons now support a referendum on rejoining.
The number of people who oppose another vote has fallen, with less than a quarter of voters now against a referendum.
The number who say there should be another vote is now 65 percent, up from 55 percent at the same point last year, although they are split over the timing, according to the survey, which interviewed 2,065 adults between December 16 and 18.
Conservative voters also appear to be falling out of love with Brexit, with many now believing that the costs outweigh the benefits, according to a poll published last month.
The findings of a poll by Opinium, which surveyed 2,000 representative voters on behalf of the campaigning group Best for Britain, found some 33 percent of those planning to vote Conservative at the next election believed Brexit had created more problems than it solved.
