http://www.oxera.com/Latest-Thinking/Publications/Reports/2017/Brexit-ports.aspx
https://www.ifs.org.uk/publications/10302
https://ec.europa.eu/commission/commissioners/2014-2019/andriukaitis/blog/likening-eu-ussr-not-unreasonable_en
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/652285/Joint_Ministerial_Committee_communique.pdf