https://www.gov.uk/government/news/david-davis-speech-to-the-suddeutsche-zeitung-economic-summit
http://www.migrationobservatory.ox.ac.uk/resources/reports/unsettled-status-which-eu-citizens-are-at-risk-of-failing-to-secure-their-rights-after-brexit/
http://www.msn.com/en-gb/news/uknews/ftse-100-chiefs%e2%80%99-fury-at-no-10-letter-backing-ministers-on-brexit/ar-AArpKuh
https://www.ifs.org.uk/publications/10302