https://ukandeu.ac.uk/wp-content/uploads/2020/03/Parliament-and-Brexit-report.pdf
https://www.europarl.europa.eu/doceo/document/B-9-2020-0098_EN.html?utm_source=POLITICO.EU&utm_campaign=3e49ba2509-EMAIL_CAMPAIGN_2020_02_13_05_53&utm_medium=email&utm_term=0_10959edeb5-3e49ba2509-190380769
http://visual.ons.gov.uk/trading-places-uk-goods-trade-with-eu-partners/
http://www.ecfr.eu/page/-/Keeping_Europe_Safe_After_Brexit2.pdf