
http://ukandeu.ac.uk/cancelling-brexit-what-would-happen-if-we-changed-our-mind-about-leaving-the-eu/

http://www.iata.org/whatwedo/Documents/economics/impact_of_brexit.pdf

https://blogs.lse.ac.uk/brexit/2019/08/12/boris-johnsons-real-agenda-the-singapore-scenario/