May I congratulate my hon. Friend most sincerely on producing a much needed Bill? Acid, knives and certain firearms are issues that we absolutely need to crack down on. Does she agree that knife prevention orders are a good mechanism? It is becoming de rigueur in some of our cities for people to carry knives in self-defence, in case they might want to use them, which is totally the wrong culture. With these orders, the police will be able to warn youngsters that if they carry knives again, they will be subject to an order and could be subject to a criminal penalty if they breach it.