You kidding? I could do some serious throat slashing with a severed plastic bottle! Not to mention they store more easily. You can crunch it up into a bag! People will kill other people with papercuts. Banning things isn't going to help.
I'm no fan at all of the UK surveillance 'state', but I will say that to say it's not prevented anything or saved any lives is ludicrous. Of course it has. Try removing them and see what happens. And two bad apples in the ambulance service doesn't mean it's a stinging rotten core. I can think of two dicks within the company I work for. Doesn't make it a bad company. The UK's healthcare system is fine. If it wasn't for twats going there with colds and sniffles, which the UK spends far far too much time and money on, it would be a lot better. Quit reading your Daily Mail.