https://www.gov.uk/government/publications/information-about-the-withdrawal-bill
https://www.youtube.com/watch?v=4ksdrYYUY2w&feature=youtu.be
http://openeurope.org.uk/today/blog/will-brexit-ground-flights-europe/
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/680366/Technical_Note_-_International_Agreements_in_the_Implementation_Period_-_CLEAN.pdf