From 2 October 2000 to 31 December 2006—the most recent date for which figures have been published—the Investigatory Powers Tribunal issued determinations in respect of 554 complaints. During that period it has only upheld a complaint once. This related to two complainants who lodged a joint complaint. The details were reported in the Interception of Communications Commissioner's report of 2005, a copy of which has been placed in the House Library.