https://www.socialeurope.eu/brexit-shows-us-real-first-world-problems-look-like
http://sydneydemocracynetwork.org/article-brexit-yes-will-suffer-well/
http://www.euronews.com/2017/06/23/who-s-afraid-of-brexit?utm_source=newsletter&utm_medium=en&utm_content=who-s-afraid-of-brexit&_ope=eyJndWlkIjoiZjU3Y2JhYmUwMGUxZDFiNTUxOTU1ZDljNzExNTI1MmEifQ==
https://www.nao.org.uk/wp-content/uploads/2017/07/The-Customs-Declaration-Service.pdf