
https://www.nao.org.uk/wp-content/uploads/2017/07/The-Customs-Declaration-Service.pdf

https://www.opendemocracy.net/neweconomics/brexit-global-south-time-end-free-trade-imperialism/

https://www.gov.uk/government/speeches/commonwealth-has-key-role-to-play-in-the-bright-future-for-britain-article-by-boris-johnson