The thing with this "official" petition site is that it's essentially a means of targeting government PR - lots of people sign the petition against, say, ID cards and then each one gets an email "from the PM" explaining why they're wrong.
Given that, it might actually be better for this to be a pre-emptive petition since a) there's no standard government line for them to feed you, and b) by the time a bill has come into existence it might be too late to do anything about it. There is certainly a tendency to restrict camera usage - either for placating "paedogeddon" type tabloid headlines, or pointless anti-terror measures like the ban on the tube - at the same time as we've become the most heavily surveiled country in Europe, so it's probably worth putting out an organised counter statement of some sort.