‘Operation Elveden is a Metropolitan Police Service investigation that revealed the payments made to corrupt public officials by journalists for information. It followed two parliamentary committees and the Leveson Inquiry which revealed serious questions over the techniques used by some which may have amounted to systematic and flagrant breaches of the law. The range and circumstance of this activity was of a scale not previously encountered by police or CPS.’
CPS News Brief, 17th April 2015
Source: http://blog.cps.gov.uk