It seems that Britain has decided that they have a knife-crime epidemic. Now that they've outlawed guns, I suppose those who supported that ban have to find something else to explain why it is that their nation still experiences violent crime.
Once again, I must point out that the weapon is nothing; it's the person wielding it who is dangerous. A person who has decided to commit a crime will use whatever tools are available to them, even if they have to manufacture the tools themselves.
Hat tip to Jason for the link.