https://ukandeu.ac.uk/wp-content/uploads/2021/03/Freeports.pdf
http://www.sussex.ac.uk/spru/newsandevents/2017/publications/food-brexit
https://www.politico.eu/article/9-slippery-brexit-pledges/?utm_source=POLITICO.EU&utm_campaign=39a5c3d811-EMAIL_CAMPAIGN_2019_11_01_05_51&utm_medium=email&utm_term=0_10959edeb5-39a5c3d811-190380769
https://publications.parliament.uk/pa/cm201719/cmselect/cmexeu/1778/1778.pdf