https://www.gov.uk/government/speeches/eu-speech-at-bloomberg
https://www.gov.uk/government/news/pms-european-council-press-statement-20-october-2017
http://www.cer.eu/sites/default/files/pb_ireland_brexit_6.7.17.pdf
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/665871/December_-_Joint_technical_note_on_the_comparison_of_EU-UK_positions_on_citizens__rights.pdf