https://cer.org.uk/sites/default/files/bulletin_114_js_st_article1.pdf
https://ukandeu.ac.uk/wp-content/uploads/2020/05/UKICE-Post-Brexit-Gov-NI-Report.pdf
https://www.publications.parliament.uk/pa/cm201617/cmselect/cmintrade/817/817.pdf
https://www.smmt.co.uk/wp-content/uploads/sites/2/1207-SMMT-position-on-UK-Brexit-negotiations.pdf