https://ec.europa.eu/commission/sites/beta-political/files/aviation.pdf
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/224244/evidence-british-influence.pdf
https://icsid.worldbank.org/sites/default/files/documents/Code_of_Conduct_V3_Comments_by_State_Commenter.pdf
https://www.niesr.ac.uk/sites/default/files/UK%20Economy%20Press%20Release%20-NIER%20No245%20%20August%202018%20-%20EMBARGOED%20until%2000.01%20Wednesday%201st%20August.pdf