Peter Mandelson: Government Appointment

Katie Lam Excerpts

Tuesday 21st April 2026 Commons Chamber

[Katie Lam (Weald of Kent) (Con)]

Yesterday, my right hon. Friend the Leader of the Opposition and I both asked the Prime Minister whether he knew about Peter Mandelson’s role as a director at Sistema when he appointed him to be the ambassador to the United States. Given that the Prime Minister did not answer our question then, I will repeat the facts of the case and ask the Minister for clarification.

From 2013 until at least 2017, Peter Mandelson served as a director for Sistema, a Russian conglomerate that invests heavily in Russia’s military industrial complex. This means that Mandelson remained a director at Sistema after Russia’s annexation of Crimea. It also means that he would have maintained close contacts with figures linked to the Russian Government, including Sistema’s former chairman Vladimir Yevtushenkov, who is currently subject to sanctions as a result of his links to Vladimir Putin.

Any sensible Prime Minister would want to consider the facts carefully before appointing somebody to a sensitive diplomatic post and would give proper consideration to whether those relationships would leave that person exposed to Russian influence. This is particularly true in the case of Peter Mandelson, who has a long history of improper financial conduct.

In November 2024, the Cabinet Secretary advised the Prime Minister to conduct security vetting on prospective candidates before appointing anybody to the ambassador’s post in Washington. In December 2024, the Prime Minister ignored that guidance and appointed Peter Mandelson anyway. In January 2025, the Prime Minister repeatedly insisted before the press and the public that Peter Mandelson had passed security vetting, despite the fact that that was not the case. When asked yesterday, he twice refused to confirm that he knew about Peter Mandelson’s links to Sistema, despite the fact that the advice that he received in December 2024 explicitly pointed it out. The advice included the following quote:

“Mandelson served as a non-executive director of the Russian conglomerate Sistema, which is itself the majority shareholder of RTI, a defence technology company…Mandelson remained on the board until June 2017, long after Putin’s annexation of Crimea in 2014.”

Either the Prime Minister is still reluctant to share with us all the information that we deserve, or he did not read the advice he was given—despite insisting repeatedly that his decision to appoint Mandelson was based on that advice. In light of this, can the Minister tell us definitively this afternoon whether the Prime Minister considered these facts about Peter Mandelson’s role at Sistema when appointing him—yes or no? If he did not, why did he not read his brief? If he did, why did he not consider it sufficiently concerning to abandon, or at the very least pause to reconsider, the appointment of Peter Mandelson to arguably our most important and security-sensitive ambassadorial role?

The Prime Minister has spoken extensively about what he did not know, but we and the British public are incredulous that he did not ask. We know that the Prime Minister knew about the Russian links, so what questions did he ask about those facts? What questions did he ask officials? What questions did he ask Mandelson, or did he simply not want to know?