Protection of Freedoms Bill

The noble Lord, Lord Soley, talked about deterrence in the context of a voluntary database. I take the point about stigma, but only a little bit. On the requirement for further evidence sought in the amendment, as the noble Lord, Lord Condon, has said, the science and the technology are both galloping forward very fast, and logically one could make an argument for continually looking for further evidence as the science goes forward and never coming to a conclusion. It is always possible to ask for more evidence, and we will hear from the Minister what evidence the Home Office has looked for. However, I would like to ask him in this context about the post-implementation review mentioned in the impact assessment. There are a number of boxes under that heading that are not completed. Perhaps he can tell the Committee something about the establishment of the criteria for the assessment under a post-implementation review, because that would be helpful. I am not sure that the amendments in this group that seek to extend the period are entirely consistent. We are in Committee, so I understand that, but to seek to decide whether to increase or decrease the time period while at the same time calling for further evidence before implementing this part of the Bill does not quite seem to hang together. However, that is probably a picky and unworthy argument because, as my noble friend said, the noble Baroness has raised matters that are extremely important.