Ministers Confirm Sir Keir Starmer Would Have Blocked Lord Mandelson US Ambassadorship

Sir Keir Starmer's government faces mounting pressure following revelations that Lord Mandelson was appointed as US Ambassador despite significant security vetting concerns. According to Downing Street, the Foreign Office withheld details of these vetting red flags.

Ministers Defend Starmer's Position

Technology Secretary Liz Kendall asserted that Sir Keir was misinformed, believing Mandelson had secured developed vetting status. Speaking on Sunday, Kendall stated, "If he had known that UK security vetting hadn't cleared him, he would not have made that appointment."

Deputy Prime Minister David Lammy echoed this defence, claiming he had "absolutely no doubt at all" that Sir Keir "would never, ever have appointed" Mandelson if aware of the vetting failure. Lammy, who served as Foreign Secretary during the appointment, indicated that neither he nor his advisers were privy to the vetting process details.

Sir Keir himself described it as "staggering" that he was not informed sooner of Mandelson's vetting failure, a process initiated only after the former minister was selected for the Washington role.

Foreign Office Fallout and Parliamentary Scrutiny

The controversy led to the ousting of Sir Olly Robbins, the Foreign Office's most senior civil servant. Lammy expressed surprise and shock at Robbins' departure, noting the "time pressures" on the Foreign Office to expedite Mandelson's placement ahead of Donald Trump's return to the White House.

Yvette Cooper, Lammy's successor at the Foreign Office, confirmed that Mandelson's vetting was designated a "priority clearance," though she insisted full checks were still conducted despite the accelerated timeline. Cooper has requested a review to ensure the information provided to MPs by officials is "fully accurate."

Former senior civil servant Helen MacNamara criticised the government's handling, suggesting officials sought "new processes to blame, new people to blame." She speculated that risks associated with Mandelson might have been "priced in" by Foreign Office officials, prioritising the Prime Minister's preference.

Opposition Calls for Accountability

Opposition parties have demanded Sir Keir's resignation, alleging he misled Parliament by previously stating that due process was followed. Conservative shadow Cabinet Office minister Alex Burqhart placed responsibility squarely on the Prime Minister. Robert Jenrick, Reform's Treasury spokesperson, questioned Sir Keir's competence, while Liberal Democrat leader Sir Ed Davey cited "catastrophic misjudgment."

Dame Emily Thornberry, chair of the Foreign Affairs Committee, highlighted that new information has "called into question" Sir Olly's November testimony to MPs, where he failed to disclose the security vetting agency's advice to deny Mandelson high-level clearance. Sir Olly is expected to face further questioning from the committee on Tuesday. Allies of Sir Olly maintain he was bound by the confidential nature of the vetting process, precluding disclosure to Downing Street.