https://www.publications.parliament.uk/pa/cm201617/cmselect/cmintrade/817/817.pdf
https://economy2030.resolutionfoundation.org/wp-content/uploads/2023/06/Trading-Up.pdf
http://www.epc.eu/documents/uploads/pub_7788_whatnowoptionsforbrexit.pdf?cmpid=BBBXT061617_BIZ&utm_medium=email&utm_source=newsletter&utm_term=170616&utm_campaign=brexit
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/502291/54284_EU_Series_No1_Web_Accessible.pdf