https://publications.parliament.uk/pa/cm201719/cmselect/cmsctech/705/70503.htm#_idTextAnchor001
https://ukandeu.ac.uk/wp-content/uploads/2021/03/Freeports.pdf
https://blogs.sussex.ac.uk/uktpo/2018/12/17/organising-the-second-referendum/
http://www.cer.org.uk/sites/default/files/insight_js_st_9.6.17.pdf