http://visual.ons.gov.uk/trading-places-uk-goods-trade-with-eu-partners/
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/868874/The_Future_Relationship_with_the_EU.pdf
https://www.perfandersson.com/uploads/1/2/7/5/127505228/andersson_2022_cp_accepted_version.pdf
http://www.cam.ac.uk/research/news/cognitive-flexibility-associated-with-voting-attitudes-in-eu-referendum-study-finds