https://publications.parliament.uk/pa/ld201719/ldselect/ldeucom/63/63.pdf
https://ec.europa.eu/commission/sites/beta-political/files/police_judicial_cooperation_in_criminal_matters_0.pdf
https://publications.parliament.uk/pa/cm201719/cmselect/cmfaff/514/514.pdf
https://corporateeurope.org/power-lobbies/2017/12/big-business-brexit-corporate-interests-still-dominate-brexit-and-trade
https://ec.europa.eu/commission/sites/beta-political/files/aviation.pdf
https://publications.parliament.uk/pa/ld201719/ldselect/ldconst/69/69.pdf
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/677268/Letter_to_Business_Leaders__1_.pdf
https://www.gov.uk/government/news/david-davis-teesport-speech-implementation-period-a-bridge-to-the-future-partnership-between-the-uk-eu
http://ukandeu.ac.uk/for-the-third-time-we-surveyed-mps-on-their-attitude-to-brexit-and-the-results-were-fascinating/
https://www.nao.org.uk/wp-content/uploads/2018/01/Implementing-the-UKs-exit-from-the-European-Union-the-Deparment-for-International-Trade.pdf