..it is far from clear that the 2016 Referendum has settled the question [of the United Kingdom’s membership of the EU] as far as public opinion is concerned.
Professor Sir John Curtice
In March 2022 UK in a Changing Europe hosted the conference British Politics After Brexit. Professor Sir John Curtice presented a detailed look at the various shifts in public attitudes since the referendum. The video below should start at 7:45 when Sir John comes in for a 35 minutes presentation plus Q&A. The complete video contains the whole conference and is around 8 hours long.