http://www.oxera.com/Latest-Thinking/Publications/Reports/2017/Brexit-ports.aspx
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/682894/Draft_Text_for_Discussion_-_Implementation_Period__1_.pdf
https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/680366/Technical_Note_-_International_Agreements_in_the_Implementation_Period_-_CLEAN.pdf
https://www.gov.uk/government/news/ip-and-brexit-the-facts