Liberal Democrat leader Sir Ed Davey went further, calling for Starmer’s resignation if the claims are true: “Keir Starmer had already made a catastrophic error of judgment. Now it looks as though he has also misled Parliament and lied to the British public. If that is the case, he must go.”

Developed Vetting Explained

Developed vetting is one of the most rigorous security checks in government, reserved for those needing access to top-secret material. It includes criminal records checks, credit checks, Security Service checks, financial and internet questionnaires, and an intrusive face-to-face interview covering nationality, personal associations and more.

Reform UK Demands Answers

Reform UK has condemned the appointment as another example of Labour sleaze and weak judgment. The party has called for full transparency on who overruled security services and why a peer with such baggage was fast-tracked into one of Britain’s most sensitive diplomatic roles.

• Mandelson failed developed vetting in January 2025
• Foreign Office overruled security services
• Starmer told Parliament “full due process” was followed
• Kemi Badenoch: “The Prime Minister misled the House”
• Ed Davey: Starmer “must go” if he lied to the public

Background: Mandelson’s Controversies

The peer was arrested earlier this year on suspicion of misconduct in public office. He has also faced sustained criticism over his links to Jeffrey Epstein. A friend of Mandelson told GB News he had “no knowledge” of any vetting issues and that no concerns were raised with him after the process.

What This Means for Britain

This latest row exposes serious questions about standards at the heart of the Labour Government. Appointing someone who failed top-level security vetting to represent Britain in Washington is not just embarrassing — it raises genuine national security concerns. The fact that the Foreign Office simply overruled the experts makes the situation even more alarming.

At a time when Britain faces growing threats from Russia, China and the Middle East, the public expects the highest standards of judgment and integrity from those in the most sensitive roles. Instead, Labour appears to be prioritising political loyalty over security.

Reform UK has consistently warned that Starmer’s Government is mired in sleaze and poor decision-making. This scandal will only deepen public distrust and fuel demands for a complete clean-up of politics. With local elections weeks away, voters have a chance to send a clear message that enough is enough.

Share if you believe the Prime Minister must answer for allegedly misleading Parliament over Mandelson’s vetting failure.

This article is a factual summary of reporting by GB News and The Guardian. Full original story available on their websites. All quotes directly attributed.