Anti-social Behaviour, Crime and Policing Bill

My Lords, I want to make a point about the evidence. It may be my fault, but I am not entirely clear what evidence the Minister is looking for. It is quite difficult, until such a measure is in force, to know whether it will be effective. Of course the Scottish experience is there as an example, and it may be that the noble Lord is relying on that, but the fact is that until the measure is actually put on to the statute book, you cannot be absolutely certain one way or the other that it will be effective. On the other hand, there is certainly evidence, which has been referred to, that people with knowledge of the way these things work are asking for the measure. Is that not evidence to justify putting the measure on to the statute book, taking the view that it may do some good and would certainly do no harm?