http://www.guengl.eu/uploads/publications-documents/NSkoutarisGUENGLReportC_%28002%29.pdf
https://publications.parliament.uk/pa/bills/cbill/2019-2020/0007/20007.pdf
https://www.ft.com/content/ed91e91a-87f2-11e7-8bb1-5ba57d47eff7
https://www.ifs.org.uk/publications/10302