https://ukandeu.ac.uk/trade-migration-and-brexit/
https://ec.europa.eu/commission/sites/beta-political/files/joint_report.pdf
https://wiiw.ac.at/can-multinationals-withstand-growing-trade-barriers-dlp-6732.pdf
https://www.theguardian.com/politics/2017/sep/04/uk-trade-deals-after-brexit-theresa-may-eu