https://www.nmc.org.uk/globalassets/sitedocuments/other-publications/nmc-register-2013-2017.pdf
http://www.consilium.europa.eu//media/32504/xt21004-ad01re02en18.pdf
https://publications.parliament.uk/pa/ld201719/ldselect/ldeucom/129/129.pdf
https://www.instituteforgovernment.org.uk/sites/default/files/publications/IfG_Brexit_Euro_Court_Justice_WEB.pdf