Today, the Prime Minister has denied knowing that Lord Mandelson failed security vetting for the role of US ambassador until earlier this week.

Sir Keir Starmer has faced calls to resign over allegations he misled Parliament and MPs when he claimed "full due process" was followed during the appointment.

It came after the Guardian newspaper reported, external that Lord Mandelson was initially denied security clearance in late January 2025 but this was overruled by the Foreign Office to ensure the peer could take up the post.

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