https://www.nao.org.uk/wp-content/uploads/2017/07/The-Customs-Declaration-Service.pdf
https://www.dw.com/en/brexit-german-leaders-write-emotional-letter-to-britain/a-47132376
https://www.opendemocracy.net/uk/gerry-hassan/brexit-dunkirk-and-britain-where-past-shapes-future?utm_source=Daily+Newsletter&utm_campaign=56585cbb86-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-56585cbb86-407405485
https://ecipe.org/wp-content/uploads/2022/02/ECI_22_PolicyBrief-TimeForFresh_01_2022_LY04.pdf