
http://www.ecfr.eu/article/commentary_the_brexit_threat_to_britains_defence_industry

https://www.esri.ie/system/files/publications/QEC2019SPR_SA_Bergin.pdf

https://www.smmt.co.uk/wp-content/uploads/sites/2/1207-SMMT-position-on-UK-Brexit-negotiations.pdf