https://publications.parliament.uk/pa/cm201719/cmselect/cmhaff/421/421.pdf
https://yougov.co.uk/news/2017/08/01/britain-nation-brexit-extremists/
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/638135/6.3703_DEXEU_Northern_Ireland_and_Ireland_INTERACTIVE.pdf
http://blogs.lse.ac.uk/brexit/2017/09/05/warning-the-cost-of-brexit-could-seriously-damage-your-health-service/