It comes after it emerged the peer failed security vetting but the Foreign Office still allowed him to take up the post.

PM faces calls to resign as government says he was ‘not aware’ Foreign Office overruled disgraced Labour peer’s vetting ‘until this week’

Sir Keir Starmer and Yvette Cooper expressed a loss of confidence in Sir Olly, it is understood

It comes after it emerged the peer failed security vetting but the Foreign Office still allowed him to take up the post.

Keir Starmer understood to have lost confidence in official over decision to override security vetting failure

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

Starmer says ministers were in the dark, but friends of former top civil servant suggest it was a case of them looking the other way

The most senior civil servant in Britain's Foreign Office has been fired former ambassador Peter Mandelson's security vetting not being disclosed.

Simon McDonald says Olly Robbins was ‘thrown under a bus’ by the prime minister and the decision feels wrong

Lord Simon McDonald says Mandelson scandal is the biggest crisis in the diplomatic service in decades

Exclusive: Helen MacNamara calls Starmer’s decision to sack Olly Robbins ‘unacceptable’