My Lords, let me start my response to the noble Lord, Lord Janvrin, by endorsing the point ably made by the noble Lord, Lord Murphy, and paying tribute to the work that the ISC does. Its members have proven themselves adept at holding the security and intelligence agencies to account and they are more than capable, I believe, of investigating any issue that falls within their remit.
It is conceivable, however, that the ISC may uncover an issue that merits further investigation but which is outside its remit to investigate. In those instances, it is right that the committee can refer the issue to the Investigatory Powers Commissioner, who can then decide whether to investigate further. It is also right that, having referred the issue, the ISC is then informed about the commissioner’s decision on whether to take further action. That is what the Government’s amendment seeks to achieve and I am glad that it has found favour with the committee.
The amendment put forward by the noble Lord, Lord Janvrin, would go further than that and mean that the commissioner must then report to the ISC the result of the investigation. I find that difficult to accept for two reasons. First, the IPC should report solely to the Prime Minister, who is ultimately responsible for our national security and therefore best placed to take any national security decisions that arise as a result of the reports. Secondly, if an issue has been referred to the IPC because it is outside the remit of the ISC, it does not necessarily follow that the ISC should see the result of that investigation.
It is worth focusing for a second on how things work in the real world. I am sure that, in practice, the IPC and the ISC will strike up a sensible and solid working relationship and keep each other informed of their work. But we do not have to provide for that in statute. On that basis, and in the light of the government amendment, which achieves almost all of what is intended by the ISC, I hope that the noble Lord, Lord Janvrin, will feel able not to press the amendment.
Let me address the point raised by the noble Lord, Lord Rosser, which is not a trivial point. Prime ministerial direction would come into play in a scenario in which, upon request of the ISC, the IPC declined to investigate further in the area suggested. In that situation, the ISC could progress the matter by asking the Prime Minister to direct the commissioner to undertake an investigation. That is provided for by Clause 206(3).
I do not think it is appropriate for this Bill to provide a mechanism whereby the IPC has to report in a certain fashion. We have to be a little careful here to ensure that the IPC is not seen as an arm of the Intelligence and Security Committee—it is not. However, there is a memorandum of understanding between the Intelligence and Security Committee and the Prime Minister. I understand that that memorandum of understanding will come up for review in the reasonably near future. I suggest that, at that time, if it is thought appropriate, the MoU could provide a vehicle to offer some further reassurance in the area that the noble Lord, Lord Janvrin, is seeking.
I recognise the issue that has been raised by the noble Lord, Lord Janvrin. As I said, I think that in the real world it will be a non-issue. However, if there is
concern in this area, perhaps I can send a signal to those involved that, when the MoU is further considered, this issue will also be factored in.