SIR Keir Starmer swatted away a bid to drag him into a sleaze probe — but suffered fresh embarrassment as a handful of MPs broke ranks.

The Commons rejected calls to refer the PM to the Privileges Committee over the vetting row – handing No10 a crucial win.

Prime Minister Sir Keir Starmer speaking at a podium in the House of Commons.Sir Keir Starmer faced a triple threat to his premiership as he scrambled to stop Labour rebels teaming up with the Tories Credit: PA Prime Minister Sir Keir Starmer and Peter Mandelson at a reception.Former US Ambassador Peter Mandelson and Prime Minister Sir Keir Starmer Credit: Alamy

MPs voted 335 to 223, majority of 112, to vote down the Tory motion.

But the victory came at a cost as a few rebels are understood to have defied the whip, underlining the unease inside Labour ranks.

The PM remains under intense pressure over his decision to parachute Mandelson — a friend of paedophile — into the plum US ambassador job, with the row set to rumble on beyond the .

Opposition parties had accused Sir Keir of misleading over claims that “full due process” was followed and that “no pressure whatsoever” was applied during the appointment process.

Downing Street denies those claims and had urged MPs to reject what it branded a political stunt.

The crunch vote followed a bruising day of evidence from senior civil servants that kept the scandal alive in Westminster.

A woman with braided hair and a teal blazer speaks into a microphone.Tory leader Kemi Badenoch Credit: Euan Cherry/PA Wire NINTCHDBPICT001075867259Former US Ambassador Peter Mandelson was sacked less than a year into the role after fresh revelations emerged about his links to Epstein Credit: Chris Eades

Morgan McSweeney – the PM’s former right-hand man – tried to absorb much of the criticism being levelled at Sir Keir for appointing the Labour peer.

He said subsequent revelations of Mandelson’s relationship with the paedophile were like a “knife through my soul”.

The political strategist also conceded he had made a “serious error of judgment” but insisted he never pushed officials to wave the appointment through “at all costs”.

He also revealed the decision to appoint Mandelson was taken after Donald Trump’s US election victory, amid hopes he could help secure a trade deal with the incoming administration.

Earlier, Philip Barton – the Foreign Office’s top civil servant at the time of the appointment – said he was “presented with a decision and told to get on with it”.

He made clear he was not consulted beforehand, adding there was “no space for dialogue” despite the sensitivity of the role.

Sir Philip also revealed the normal process had been flipped, with Mandelson’s appointment announced before full Developed Vetting had even begun.

He warned that an initial suggestion the peer might not need top-level clearance because he was a “fit and proper person” was “odd and insufficient”.

The Cabinet Office later reversed that position and agreed full vetting was required — but only after the public announcement had already been made.

Sir Philip said there was “absolutely” pressure to get the process done quickly — but stressed he was not aware of pressure on the “substance” of the vetting decision itself.

That evidence builds on earlier testimony from his successor in the Foreign Office Sir Olly Robbins, who warned of an “atmosphere of pressure” around the process.

Another senior official, Ian Collard, said he “felt pressure to deliver a rapid outcome” to the clearance decision.

Documents also show Mandelson was granted access to the Foreign Office building and sensitive briefings up to Secret level before full clearance, under special arrangements.

Mandelson was later sacked less than a year into the role after fresh revelations emerged about his links to Epstein, including past comments describing him as a “best pal”.