It's a long game, adding surveillance. Surely more surveillance would not have prevented this senseless murder. No one knows why it happened; it seems to have o

It's a long game, adding surveillance. Surely more surveillance would not have prevented this senseless murder. No one knows why it happened; it seems to have occurred without any reason. We can surmise momentary insanity or a drug-induced psychotic episode. The apparent perpetrator refuses to confess, so maybe he doesn't even remember how it happened, though obviously he remembers scrubbing the car. But CCTV footage wouldn't have stopped this madness. It would have helped find her body a little more quickly. In the long term, I guess surveillance would discourage violent crime, as the idea that "they'll see us, the police will catch us" gradually becomes well accepted among people who have the potential to commit crimes. This is probably already true in London, and maybe in other closely-surveilled capital cities. But even if everyone sane shares the knowledge that "they're watching us", psychotic actors will still do psychotic things.