https://www.gov.uk/government/news/joint-article-a-deep-and-special-partnership
https://ukandeu.ac.uk/the-windsor-framework-where-have-all-the-rebels-gone/
http://visual.ons.gov.uk/trading-places-uk-goods-trade-with-eu-partners/
https://publications.parliament.uk/pa/bills/cbill/2019-2020/0007/20007.pdf