https://publications.parliament.uk/pa/cm201719/cmselect/cmintrade/520/520.pdf
https://www.iwh-halle.de/fileadmin/user_upload/publications/iwh_discussion_papers/iwh-discussion-paper_2019-04_Brautzsch_Holtemoeller.pdf
https://uk.finance.yahoo.com/news/brexit-risk-destroying-uks-entrepreneurial-start-ups-warwick-business-school-151240554.html