Political editor David Maddox looks back on The Independent’s exclusive in September last year and how he informed Downing Street of Mandelson’s vetting failure seven months before the prime minister claims he knew

The Independent put revelations that Peter Mandelson had failed MI6 vetting for the US ambassador role to Downing Street in September – but a ‘furious’ PM insists he did not know…

Inquiries into who knew what, and when, will be pored over in coming weeks and could ultimately decide Starmer’s fate