https://www.sbs.strath.ac.uk/economics/fraser/20171129/GMB-Brexit-report.pdf
https://www.tatler.com/article/rishi-sunak-chancellor-of-the-exchequer-feature
https://blogs.lse.ac.uk/brexit/2018/10/30/after-brexit-the-uk-should-be-able-to-re-enter-the-eu-if-it-wishes-to-do-so/
https://hansard.parliament.uk/commons/2018-03-07/debates/65828E0C-3CC7-43AE-B5D2-B5F1B5D42A4C/EuropeanUnionCitizenship