Lord Mandelson: Response to Humble Address

Debate between Imran Hussain and Nick Thomas-Symonds

Wednesday 3rd June 2026 Commons Chamber

[Nick Thomas-Symonds]

I agree with the right hon. Gentleman. It is just that if he looks at the wording of the Humble Address, he will see that it lists a series of classes of documents, and then it says, “except papers”—those that were referred to the ISC. That is our compliance with the motion.

Let me turn back to the process, which, as I said, was undertaken by officials. They sought returns from all Government Departments, including material, as has been referred to, on non-corporate communication channels. There were multiple rounds of discovery to ensure that searches returned material relevant to the full scope of the motion. Some documents were assessed as likely prejudicial to national security or international relations—the point I was just making—and, as I committed to the House in February, they were then referred to the Intelligence and Security Committee.

Due to the wide scope of the motion and the significant volume of material that needed to be located and reviewed, the first publication, on 11 March, was focused on the parts of the motion that were of most urgent interest to the House: Peter Mandelson’s appointment, his withdrawal and the severance. The second tranche, which was published on Monday, contains material relevant to the parts of the motion that cover communications and documents concerning Peter Mandelson’s appointment and vetting, and messages between Peter Mandelson and Ministers, special advisers and senior civil servants in the months prior to and throughout his tenure as ambassador. All documents held by the Government have now been disclosed, save those that are being withheld on the request of the Metropolitan police.

[Imran Hussain (Bradford East) (Lab)]

On the point of communication between Peter Mandelson and Ministers, the fact remains that the more documents that are released, the more questions emerge about Peter Mandelson’s reach across Government. Will the Minister tell the House whether Lord Mandelson had any discussions whatsoever with Ministers, officials or advisers about Palantir? Will further documentation with regards to that be released?

[Nick Thomas-Symonds]

On Palantir, I refer my hon. Friend to the methodology statement at the start of each of the three volumes, where it is made absolutely clear that there is a recognition that Palantir is a matter of interest to the House; indeed, there are references to Palantir within the documents. As I am sure the House will understand, I will not speculate on the contents of the documents that remain with the Metropolitan police, but certainly I invite everyone to look at the references to Palantir in the tranche of documents before the House—indeed, the public can do so as well.