http://www.ecfr.eu/article/commentary_the_brexit_threat_to_britains_defence_industry
https://www.nao.org.uk/wp-content/uploads/2022/05/Regulating-after-EU-Exit.pdf
https://blogs.lse.ac.uk/brexit/2019/06/26/did-we-ever-really-understand-how-the-eu-works/
https://infacts.org/fight-brexit-including-changing-mind/