https://publications.parliament.uk/pa/cm201719/cmselect/cmhaff/421/421.pdf
https://www.ft.com/content/b638551a-68c3-11e7-8526-7b38dcaef614
https://blogs.lse.ac.uk/brexit/2019/06/26/did-we-ever-really-understand-how-the-eu-works/
https://www.bankofengland.co.uk/-/media/boe/files/report/2018/eu-withdrawal-scenarios-and-monetary-and-financial-stability.pdf?la=en&hash=B5F6EDCDF90DCC10286FC0BC599D94CAB8735DFB