All this week the UK government is releasing Brexit papers (I posted on this here: UK's "Department for Exiting the EU" (srsly) to publish 5 papers this week)
Today's (Thursday) paper will outline how data will be protected and exchanged with the EU, and which "reflects the unprecedented alignment between British and European law," according to the aforementioned Department for Exiting the European Union
Via Bloomberg, who have plenty more here