https://www.publications.parliament.uk/pa/ld201617/ldselect/ldeucom/169/169.pdf
https://www.socialeurope.eu/brexit-status-quo-ex-ante
http://www.parliament.uk/documents/commons-committees/Exiting-the-European-Union/17-19/Cross-Whitehall-briefing/EU-Exit-Analysis-Cross-Whitehall-Briefing.pdf
http://fedtrust.co.uk/mrs-may-in-florence/