Knifes are just far more common and far more likely but the government (and opposition) don’t want to accept that. You just have to follow some of the Police Twitter Accounts @MetTaskForce and @BTPOSU are positing pictures of the knives taken off the street every single day. (There os one particular Rambo knife which seems to be turning up all over the place, either someone has a job lot or it’s really cheap online).