[holding answer 3 November 2008]: The number of requests for communications data under Regulation of Investigatory Powers Act 2000 (RIPA) is published in the Interception of Communications Commissioner’s annual report. These figures were not collated before 2005 and are not broken down by agency, type of communication (i.e. telephone or internet) or the service provider.
Number 1 January to 31 December 2007 519,260 11 April 2006 to December 2006 253,557 1 January 2005 to 31 March 2006 439,054
Part 3 of RIPA deals with investigation of electronic data protected by encryption. These provisions have only been in force since October 2007. To date, 26 section 49 notices have been served on individuals requiring them to disclose material protected by encryption in an intelligible form.