I am grateful to the hon. and learned Gentleman. We need not rehearse the arguments that we looked at in some detail a few days ago, but I will say what I said then: although the Bill covers those points, there is merit in considering the matter carefully, and I shall continue to give it anxious consideration.

The sliding scale approach, to coin a phrase, is clearly relevant. We must remember that the absence of the Secretary of State in the case of the other agencies is not a problem, because we want them to have integrity and operational independence. We must always remember that underlying principle. I am not criticising anyone, but that sometimes gets a bit lost in the debate.

Having said that, the hon. and learned Gentleman’s point is well made about the different considerations that would present themselves to the mind of a commissioner, bearing in mind that the Secretary of State and national security and all those factors are not involved. I need not, perhaps, add more to the debate on that; I simply commend yet another Clause that covers the double-lock authorisation process and applies it for the first time to the area of warrantry in question.