https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/677268/Letter_to_Business_Leaders__1_.pdf
http://carnegieeurope.eu/strategiceurope/?fa=72665&utm_source=rssemail&utm_medium=email&mkt_tok=eyJpIjoiTWpoa05ERTFNbVk1WkdKayIsInQiOiJJTUNnbnRkdVQ0Y2xiOUdyamtuMk12M2h4TUZBc3RJMjl5YjB3Q1VHS21wWnNydW1VYmlIVGpNSUdyV0k1dDNJOGZlUGt0bnRZYVF5aENrNFJ5Z3U0QUlXa0xXQUNDVmxUOFdrdlIyQzFPeDJvbVlVMW82Q28rSVdhWXFKZFVGdSJ9
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