The whole purpose of this legislation, whether we agree with it or not, is that there should be a double lock. When I was signing warrants for intercept, it was left to me entirely as Secretary of State. There was no involvement of the judiciary or anybody else, other than the security services providing you with a great deal of information on why you should take a particular decision. The principle behind the Bill is that a judge should look at and review the decision of the Secretary of State. The argument both in the Joint Committee and in the other place has been about whether the judge should take into account necessity and proportionality—which would have been taken into account by the Secretary of State in taking the decision in the first place—in the same way as the Secretary of State, or whether they should look at it simply through the eyes of a judge.
One of the most interesting sessions of the Joint Committee was in the Committee Room upstairs where we interviewed a judge from New Zealand—it was 5.10 am when the judge very happily came to address the committee. That is obviously a very different sort of country. With a couple of million people, they obviously do not have the same number of warrants to deal with as we do in this country. It seemed, however,
from what the New Zealand judge was saying, that there was a happy relationship between him and the appropriate government Minister in New Zealand, in that when they looked at a warrant, they did so with the same eyes.
The noble Lord, Lord Carlile, is saying that if you take into account modern judicial review principles, you also take into account proportionality and necessity. But that has to be made clear. I understand that the Government made some changes in the other place with regard to this matter, but the precise role of the judge needs to be made clear. Does he or she look at a warrant simply as a judge or as a human being, and is it in the same way as the Secretary of State does?