http://ukandeu.ac.uk/for-the-third-time-we-surveyed-mps-on-their-attitude-to-brexit-and-the-results-were-fascinating/
https://www.brookings.edu/blog/order-from-chaos/2018/01/05/the-brexit-options-explained/?utm_campaign=Brookings%20Brief&utm_source=hs_email&utm_medium=email&utm_content=59815275
https://www.opendemocracy.net/en/opendemocracyuk/customs-union-leaves-everything-play-trade-justice/?utm_source=Daily+Newsletter&utm_campaign=f531c721c4-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-f531c721c4-407405485