Still think that if you're innocent, you have nothing to fear from surveillance and control laws? Have a look at this news-video about Stephen Clarke, a man who was accused to taking pictures of sewer-gratings in Manchester and arrested. Though the police couldn't find any photos of sewer-gratings on his phone (and even though "what a sewer grating looks like" isn't a piece of specialized terrorist intelligence), he was held on suspicion of planning an act of terror, imprisoned for two days while the police searched his home, his phone and his computer. When they couldn't find anything suspicious, they released him, but kept his DNA on file, as the biometric of someone who had been accused of plotting a terrorist act.
Tip of the clown wig to the twattering Chicken Yoghurt.