http://fedtrust.co.uk/mrs-may-in-florence/
https://www.gov.uk/government/news/programme-for-fourth-round-of-uk-eu-article-50-negotiations
https://ec.europa.eu/commission/sites/beta-political/files/joint_report.pdf
https://ec.europa.eu/commission/sites/beta-political/files/slides_on_uk_technical_note_on_temporary_customs_arrangements.pdf