http://blogactiv.eu/blog/2012/05/15/stumbling-towards-the-brexit/
https://blogs.sussex.ac.uk/uktpo/2018/02/15/sustainability-impact-assessment-for-post-brexit-britain/
https://www.publications.parliament.uk/pa/cm201617/cmselect/cmintrade/817/817.pdf
https://committees.parliament.uk/oralevidence/2766/pdf/