Lord Mandelson: Government Response to Humble Address

Emily Thornberry Excerpts

Tuesday 19th May 2026 Commons Chamber

[Emily Thornberry (Islington South and Finsbury) (Lab)]

I rise to support the ISC in its carefully considered concerns, and I am disappointed at the answer that the Government have given. It seems to me that one of the questions on the Mandelson appointment is: why, when the United Kingdom Security Vetting document had two red boxes ticked, including “This man should not be appointed”, was that somehow or other translated into “He should be appointed”?

It is very important that the public know and understand that we are learning from the mistakes that were clearly made, and we cannot know that lessons have been learned unless the documents are checked. My Committee and the ISC are trying our best to get to the truth, and we are having obstacles put in our way. For that reason, I believe that the ISC should be allowed to look at the file, with proper redactions, to understand how mitigations could be put in place to make us safe when it came to the appointment of Peter Mandelson.

[Darren Jones]

To confirm, the documents that relate to the recommendation put to the Foreign Office and the Foreign Office’s decision to appoint Peter Mandelson irrespective of the recommendation that was put to it have been referred to the Intelligence and Security Committee. What has not been referred is the raw data collected as part of interviews undertaken with Peter Mandelson, which in any circumstances we would not share in relation to any appointment. I confirm that neither I nor any decision maker in this process has seen that level of personal detail, because it is kept so securely to ensure that, when people go through this process, they feel able to give full and frank answers, without a wide range of politicians or others seeing their deeply personal information.