Making such an assumption is extremely dangerous.
Jack Straw, David Blunkett and Alan Johnson and Tory Lord Baker are leaning on Nick Clegg to support the Snoopers’ Charter (if he caves, any last shred of credibility he might still have is history).
The thing is, though, do these clowns seriously think that terrorists can’t devise a scheme to bypass such surveillance? Here’s a couple.
Set up an email account and give all cell members the login details. Then they can all write messages, save them to Drafts and simply log in to read them, without the need for them to be sent at all, thus they remain invisible.
It also occurs to me that uploading messages to the Cloud, disguised as images, perhaps (to hide from keyword searches), might be a viable option, too, subject to the same log-in sharing. This, for example, is an image of this post:-
The first is hardly a secret, as I heard it mentioned in a TV show (part of the NCIS franchise), the other has just occurred to me, but seems equally effective. And if it occurs to me, it will occur to others of a more malign disposition. And undoubtedly has.
Any terrorist group** serious about secrecy can stay under the radar without breaking into a sweat (using fax is a good way too). But, of course, the snoopers charter is only minimally about terrorism – what it’s mainly about is spying on, and controlling, the population as a whole, especially those more tech-savvy than the Luddites in government (i.e. pretty much everybody – Lol, my arse, Cameron!).
**A lone terrorist, of course, will always be under the radar, having no-one to communicate with.
And if you truly believe that you have nothing to fear if you’re doing nothing wrong, you are seriously deluded.