https://www.tuc.org.uk/news/cbi-and-tuc-call-prime-minister-change-brexit-approach?language=cy
https://www.bloomberg.com/politics/articles/2017-04-11/brexit-means-scots-need-to-make-informed-choice-sturgeon-says
https://rusi.org/sites/default/files/briefingpaper-france-uk-2017.pdf
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/761852/05_December-_EU_Exit_Attorney_General_s_legal_advice_to_Cabinet_on_the_Withdrawal_Agreement_and_the_Protocol_on_Ireland-Northern_Ireland.pdf