http://fedtrust.co.uk/our-work-on-europe/hard-brexit-international-trade-and-the-wto-scenario/
http://visual.ons.gov.uk/trading-places-uk-goods-trade-with-eu-partners/
https://ukandeu.ac.uk/wp-content/uploads/2021/09/Global-Britain-views-from-abroad.pdf
https://www.irishtimes.com/opinion/editorial/the-irish-times-view-on-brexit-day-britain-s-great-leap-backwards-1.4156666