This Blue Paper is a new notion in concept papers. It provides robust legal options for data professionals and policy options for law-makers on data transfers between the EU and third countries. In particular, it outlines the UK's post-Brexit options. It is best guidance for professionals, politicians, scholars, and all who wish to glean more insight into how Brexit will likely change the UK's existing data protection framework. What readers will find in this Blue Paper will empower them to assess their real situation and conceptualise practical solutions.