The prime minister says he only learned of security concerns around the ex-US ambassador earlier this week.

Guardian investigation uncovers decision by UK security officials to deny clearance before Mandelson took up role as US ambassador

A decision to go against the recommendation of the vetting agency was taken by officials in the Foreign Office, spokesperson says.

Speculation over the prime minister’s future dominates UK front pages after the Guardian revealed Peter Mandelson failed his security vetting

PM says he is ‘furious’ and did not know security officials had recommended that Mandelson be denied clearance

Starmer’s disastrous decision to make New Labour veteran the US ambassador has led to months of political outcry

The PM is facing calls to resign over the revelation that Lord Mandelson did not pass security checks.

How did the PM’s chosen US ambassador fail security vetting but still get approved, what exactly did he know, and who is to blame?

PM says it is ‘staggering’ and ‘unforgivable’ that he was not told Mandelson had failed security vetting. Lucy Hough speaks to the Guardian’s head of investigations, Paul Lewis

Exclusive: Officials have spent weeks debating whether or not to release highly sensitive information about the affair

Almost all officials working in Foreign Office HQ undergo process before gaining access to top secret material

According to revelations by the Guardian on Thursday, April 16, the former ambassador to the United States, implicated in the Jeffrey Epstein affair, was sent to Washington…

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

PM said he was ‘staggered’ not to have been told that Peter Mandelson had failed his security vetting before becoming ambassador to the US

Deputy prime minister says it is ‘inexplicable’ top civil servant kept Downing Street in dark

The prime minister’s leadership is still in the spotlight after Mandelson was appointed US ambassador after he failed security vetting

The prime minister says he only learned of security concerns around the ex-US ambassador earlier this week.

Downing Street takes unusual step of releasing document ahead of PM’s Commons showdown over Mandelson scandal

Documents also show PM’s choice for US ambassador was offered ‘higher tiers’ briefing before vetting was finalised

Keir Starmer faces intense scrutiny from MPs over the Mandelson scandal amid growing calls for his resignation.

PM says in Commons statement he has ordered inquiry into any security concerns relating to Mandelson’s tenure in US