https://policyexchange.org.uk/wp-content/uploads/2017/07/Farming_Tomorrow.pdf
http://www.fdf.org.uk/news.aspx?article=8062
https://www.opendemocracy.net/can-europe-make-it/andreas-rahmatian/eu-as-britain-s-constitutional-stabiliser?utm_source=Daily+Newsletter&utm_campaign=8d26251e8d-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-8d26251e8d-407405485
https://www.nao.org.uk/wp-content/uploads/2017/07/The-Customs-Declaration-Service.pdf