Bad Guys
One way that terror works is to cause a Gov to use excessive repressive actions in order to smack the gadfly - this derives a wedge between the Gov and its citizens who can no longer see who the bad guys actually are as the Gov looks more and more similar to the advocates of terror (there is Gov sponsored terror after all)
so who are the Bad Guys from a citizens POV, it could include GCHQ and from this forum it appears it does