http://www.ecfr.eu/article/commentary_the_brexit_threat_to_britains_defence_industry
https://bdi.eu/media/user_upload/20171005_Pressemitteilung_Brexit.pdf
https://www.publications.parliament.uk/pa/cm201617/cmselect/cmbeis/909/909.pdf
https://www.bloomberg.com/news/features/2017-06-02/u-k-election-brexit-tests-loyalties-in-labour-stronghold?cmpid=BBBXT060217_BIZ&utm_medium=email&utm_source=newsletter&utm_term=170602&utm_campaign=brexit