UK Documents related to negotiations between the UK and the EU regarding future trade between the UK and the EU:
https://gov.uk/government/publications/our-approach-to-the-future-relationship-with-the-eu
Documents now include the DRAFT UK-EU Comprehensive Free Trade Agreement (CFTA) proposed by the UK and shared with the EU:
DRAFT UK-EU Comprehensive Free Trade_Agreement (pdf)
(local copies available)