The total number of leaks recorded by Cabinet Office each year since 2005, when a central record was begun, is as follows:
Total number of leaks 2005 78 2006 98 2007 50
Total number of leaks
Information for 2008 is currently being assessed. These numbers do not necessarily capture all instances of unauthorised disclosure across Government.
It is for departmental permanent secretaries to take decisions on whether leak investigations into the unauthorised disclosure of information originating in their Departments should be carried out. It has been the policy of successive Administrations not to comment on security matters other than in exceptional circumstances when it is in the public interest to do so.