http://fedtrust.co.uk/the-2017-general-election-a-mandate-for-brexit/
https://www.smmt.co.uk/wp-content/uploads/sites/2/1207-SMMT-position-on-UK-Brexit-negotiations.pdf
https://economy2030.resolutionfoundation.org/wp-content/uploads/2023/06/Trading-Up.pdf