What pmuk said in a sibling comment, plus
- Destabilising Northern Ireland [1] - Problems harvesting crops [2] - Breaking international law [3] - Irish supply chains have been reconfigured to bypass the UK [4]
Economics Explained recently did a couple of videos on the UK economy and the current problems. Not limited to Brexit but also not made better [5][6]. The FT did a similar video a year ago [7]
[1] https://blogs.lse.ac.uk/politicsandpolicy/the-impact-of-brex...
[2] https://committees.parliament.uk/work/1497/labour-shortages-...
[3] https://www.europarl.europa.eu/news/en/press-room/20220614IP...
[4] https://www.politico.eu/article/ferry-firms-avoid-britain-wi...
[5] https://youtu.be/P0G3lYTOI0Q