My Lords, first, I apologise. Like the noble Lord, Lord West, who during Committee had a bionic knee, I may not last, because I had a new one installed a couple of weeks ago. My eyes turned to the noble Lord, Lord Fox, as he possibly expected, but I am out of reach today and I cannot hit him with my crutch.
It might help the House if I described the circumstances in which an emergency warrant is sought. There is a very long-standing system for this. In the days before we had judicial commissioners, it was if a Minister was unavailable, and now it is if the Minister and, of course, the judicial overseers decide that a warrant sought is wrong or inappropriate, all the material is destroyed.
At the earlier stage, I said that you cannot legislate to forget, but the noble Lord, Lord Fox, has slightly twisted what I was trying to say then. Of course, if the material is destroyed because the warrant was not approved, some people will remember what they read, but it cannot be used in any way.
These occasions occur nearly always at times when people are unavailable—in the middle of the night or at weekends—when there is a brief window of opportunity
where it is a matter of life and death. I can see that, on the surface, it is appealing to bring the notification time down to 24 hours, but this is not rational or consistent with the rest of the legislation that we have. For far more intrusive techniques such as planting a microphone or intercepting a communication, it is three days. That said, I know that my former colleagues will endeavour to do it as soon as possible, but over the weekend the Investigatory Powers Commissioner’s Office is not open. People are not available. They will try to do it as soon as possible, but it does not make sense to reduce the time needed in these cases of low intrusion, with datasets of no or low expectation of privacy, to require a stricter regime than for very much more intrusive techniques such as the planting of a microphone in your house.
4 pm