
https://www.nao.org.uk/wp-content/uploads/2018/01/Implementing-the-UKs-exit-from-the-European-Union-the-Deparment-for-International-Trade.pdf

https://www.publications.parliament.uk/pa/ld201617/ldselect/ldeucom/169/169.pdf

https://www.socialeurope.eu/trump-and-brexit