https://blog.bestforbritain.org/index.php/blog/polling-shows-no-brexit-definitely-better-bad-brexit/
https://bdi.eu/#/artikel/news/europa-muss-ein-worst-case-szenario-verhindern/
https://www.esri.ie/system/files/publications/RB202017_2.pdf
https://ukandeu.ac.uk/wp-content/uploads/2021/06/EU-UK-2030-Report.pdf