https://committees.parliament.uk/oralevidence/2766/pdf/
https://publications.parliament.uk/pa/cm201719/cmselect/cmpubacc/401/401.pdf
http://www.ips-journal.eu/regions/global/article/show/brexit-but-what-about-africa-2199/
https://publications.parliament.uk/pa/ld201719/ldselect/ldconst/69/69.pdf