https://ec.europa.eu/commission/sites/beta-political/files/customs_controls_0.pdf
https://www.opendemocracy.net/uk/leanne-wood/fault-lines-of-welsh-politics-have-been-redrawn?utm_source=Daily+Newsletter&utm_campaign=970123e408-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-970123e408-407405485
http://reutersinstitute.politics.ox.ac.uk/risj-review/sympathetic-unconcerned-how-europes-media-cover-brexit
http://letter_to_department_for_exiting_the_european_union_to_publish_the_findings_of_the_analysis_it_has_carried_out_of_the_impact_of_different_brexit_outcomes_for_the_uk_economy