
http://www.europarl.europa.eu/cmsdata/115748/IPOL_IDA(2017)583130_EN.pdf

https://unctad.org/news/post-brexit-uk-exports-could-fall-32-billion-due-non-tariff-measures-and-tariffs

https://publications.parliament.uk/pa/cm201719/cmselect/cmbeis/380/380.pdf