https://www.tuc.org.uk/news/cbi-and-tuc-call-prime-minister-change-brexit-approach?language=cy
https://www.instituteforgovernment.org.uk/sites/default/files/publications/IfG_Brexit_customs_WEB.pdf
https://blogs.lse.ac.uk/brexit/2019/11/04/would-a-more-educated-population-have-rejected-brexit/
https://www.gov.uk/government/news/david-davis-concludes-visit-to-estonia