https://ukandeu.ac.uk/trade-migration-and-brexit/
https://publications.parliament.uk/pa/cm201719/cmselect/cmhaff/961/961.pdf
http://trade.ec.europa.eu/doclib/docs/2018/october/tradoc_157469.pdf
https://www.brookings.edu/articles/what-are-tariffs-and-why-are-they-rising/