https://researchbriefings.files.parliament.uk/documents/CBP-9255/CBP-9255.pdf
https://www.global-counsel.co.uk/sites/default/files/analysis/insight/download/Hard%20and%20Soft%20Political%20Risk.pdf
https://www.emcdda.europa.eu/system/files/publications/13838/TDAT21001ENN.pdf
https://blogs.sussex.ac.uk/uktpo/2017/06/12/animal-welfare-and-post-brexit-trade/