http://fedtrust.co.uk/a-chaotic-brexit-is-still-a-possibility/
https://www.open-britain.co.uk/new_research_trade_deals_with_five_key_countries_could_take_26_years_to_negotiate
https://www.nao.org.uk/wp-content/uploads/2017/07/The-Customs-Declaration-Service.pdf
https://www.opendemocracy.net/uk/gavin-barker/brexit-means-progressive-alliances-or-corporate-absolutism?utm_source=Daily+Newsletter&utm_campaign=d40bbfc4f2-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-d40bbfc4f2-407405485