https://publications.parliament.uk/pa/cm201719/cmselect/cmexeu/1778/1778.pdf
http://www.ey.com/Publication/vwLUAssets/EY-UK-EU-Working-through-uncertainty/%24FILE/EY-UK-EU-Working-through-uncertainty-considerations-for-Financial-Institutions.pdf
https://ec.europa.eu/commission/sites/beta-political/files/joint_report.pdf
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/836116/Explanatory_Note_Accessible.pdf