https://institute.global/news/brexit-what-we-now-know
https://www.europarl.europa.eu/doceo/document/A-9-2023-0155_EN.html
http://www.fdf.org.uk/news.aspx?article=8062
https://www.theguardian.com/politics/2017/sep/04/uk-trade-deals-after-brexit-theresa-may-eu