R (ota Davis et al) v. Secretary of State for Home Department  EWHC 2092 – 17 July 2015 – read judgment
When a domestic Act of Parliament is in conflict with EU law, EU law wins. And when a bit of the EU Charter (given effect by the Lisbon Treaty) conflicts with an EU Directive, the EU Charter wins.
Which is why the Divisional Court found itself quashing an Act of Parliament on Friday – at the behest of four claimants, including two MPs, the Tories’ David Davis and Labour’s Tom Watson.
The doomed Act is the Data Retention and Investigatory Powers Act 2014 or DRIPA. It was in conformity with an underlying EU Directive (the Data Retention Directive 2006/24/EC or DRD – here). However, and prior to DRIPA, the DRD had been invalidated by the EU Court (in the Digital Rights Ireland case here) because it was in breach of the EU Charter.
All this concerns communications data, which tell us who was sending an email, to whom, from where, and when – but not the content of the email. DRIPA in effect compels telecoms providers to keep communications data for 12 months, and to make it available to public bodies such as intelligence and law enforcement agencies.