
https://www.instituteforgovernment.org.uk/printpdf/10590

https://share.trin.cam.ac.uk/sites/public/Comms/Rogers_brexit_as_revolution.pdf

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