http://cdn.budgetresponsibility.org.uk/July_2017_Fiscal_risks.pdf
https://blogs.sussex.ac.uk/uktpo/2018/02/15/sustainability-impact-assessment-for-post-brexit-britain/
http://fedtrust.co.uk/brexitthe-conservative-centre-cannot-hold/
http://www.res.org.uk/view/art4Apr17Features.html