https://cepr.org/sites/default/files/policy_insights/PolicyInsight92.pdf
https://files.taxfoundation.org/20211014170634/International-Tax-Competitiveness-Index-2021.pdf
http://www.oecd.org/eco/outlook/economic-forecast-summary-united-kingdom-oecd-economic-outlook-june-2017.pdf
https://www.bruegel.org/wp-content/uploads/2021/05/PC-2021-11-ecofin-210521.pdf