https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/868874/The_Future_Relationship_with_the_EU.pdf
https://www.sbs.strath.ac.uk/economics/fraser/20171129/GMB-Brexit-report.pdf
https://www.ft.com/content/b638551a-68c3-11e7-8526-7b38dcaef614