Interestingly, this has not been reported in the UK.
Here's some correspondence with the BBC that shows what's going on. The BBC acknowledge they have been asked to talk to the government before reporting on anything to do with the recent security revelations: https://www.whatdotheyknow.com/request/reporting_on_gchqs_te...
(BTW, the 2nd result on that BBC news search is more like a job ad for GCHQ)
(Edited to remove my erroneous claim that D-notices aren't voluntary, turns out they are, though hardly any media orgs. go against them)
http://www.theguardian.com/world/2013/jun/17/defence-d-bbc-m...