https://blogs.lse.ac.uk/brexit/2021/02/04/indyref2-scottish-independence-would-be-2-3-times-more-costly-than-that-of-brexit-and-rejoining-the-eu-wouldnt-make-up-the-difference/
https://www.socialeurope.eu/2017/07/brexit-to-nowhere/
https://www.irishtimes.com/business/financial-services/brexit-shrank-uk-services-exports-by-110bn-academics-find-1.4580394