The air in Westminster is thick with whispers of doubt and calls for accountability. Prime Minister Keir Starmer is facing a political storm, not from external opponents, but from within his own party, all thanks to the lingering shadow of Peter Mandelson's controversial appointment and the role of his chief of staff, Morgan McSweeney. With revelations surfacing about Mandelson's deep ties to convicted sex offender Jeffrey Epstein, and questions swirling about what Starmer truly knew and when, the Prime Minister's judgment is being scrutinised like never before. The stark reality? Many in Labour believe Starmer's position is becoming "untenable" if McSweeney isn't sacked, suggesting the PM's closest confidant might be the scapegoat for a scandal threatening to consume the leadership.
A Web of Questions: Mandelson, Epstein, and the Labour Leader
The current crisis is rooted in the appointment of Lord Peter Mandelson as US Ambassador, a role he was reportedly offered despite known, and apparently underestimated, connections to the disgraced financier Jeffrey Epstein. This decision has ignited a firestorm, with Labour MPs expressing deep anger and dismay.
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The Core Allegation: Lord Mandelson, a figure with a history in Labour politics, was appointed to a significant diplomatic role.
The Epstein Connection: It has emerged that Mandelson maintained a friendship with Jeffrey Epstein, a convicted sex offender, even after Epstein's conviction.
Starmer's "Lies": Prime Minister Starmer has stated that Mandelson "repeatedly lied" to him about the extent of this friendship.
The Appointment: The question remains: why was Mandelson appointed at all, given these known associations? And crucially, what vetting process allowed this to happen?
Timeline of Key Events and Revelations:
| Event | Date | Key Details | Source(s) |
|---|---|---|---|
| Mandelson appointment as US Ambassador | Past | Appointed to a senior diplomatic role. | All |
| Reports of Mandelson's friendship with Jeffrey Epstein surface | Past | Concerns raised about the depth and nature of the relationship. | All |
| Starmer acknowledges Mandelson lied about Epstein | ~Feb 5, 2026 | PM admits Mandelson misled him about his ties to Epstein after his conviction. | 1, 2, 10, 11 |
| Starmer apologizes to Epstein victims | ~Feb 5-6, 2026 | Offers an apology for appointing Mandelson and believing his "lies." | 3, 7, 11, 15 |
| Calls for Morgan McSweeney's dismissal | ~Feb 5-6, 2026 | Pressure mounts on Starmer to sack his chief of staff, whom some blame for the appointment. | 4, 8, 9, 13, 15 |
| Downing Street reaffirms confidence in McSweeney | ~Feb 5-6, 2026 | Despite calls for his sacking, Starmer's office insists McSweeney retains his confidence. | 2, 4, 9 |
| Anticipation of document release | Present | Government preparing to release communications and vetting documents related to Mandelson's appointment, amid fears of further embarrassment. | 4, 9, 13, 15 |
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"Starmer said he regretted appointing Mandelson in Washington given his relationship with the financier and convicted child sex offender, about which he said the Labour peer had repeatedly lied. Peter Mandelson has betrayed his country, he has betrayed the victims of Jeffrey Epstein, he has betrayed this country, and he has betrayed the party he once belonged to, and he should feel the full force of the law." (Article 2)
This statement, though seemingly strong, is met with division. Is it a genuine admission of a profound misjudgment, or a tactical manoeuvre to distance himself from the fallout?

The Chief of Staff's Shadow: McSweeney's Role in the Firestorm
At the heart of the current pressure on Keir Starmer lies Morgan McSweeney, his chief of staff. Multiple reports indicate that McSweeney is widely believed to have been a key advocate for Mandelson's appointment. The argument from some Labour MPs is chillingly simple: if McSweeney pushed for Mandelson, and Mandelson's association with Epstein has proven so damaging, then McSweeney's own position should be untenable.
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Blame Game: Many Labour backbenchers are pointing fingers at McSweeney, seeing him as the architect or enabler of the Mandelson appointment. (Articles 6, 13)
Starmer's Defence: Despite these calls, Downing Street has consistently stated that Starmer has "full confidence" in McSweeney. (Articles 2, 4, 9)
The "Untenable" Position: A significant portion of the parliamentary party reportedly believes that if McSweeney is not sacked, Starmer's own leadership becomes impossible to sustain. (Article 1, 4)
"Pressure mounts on Starmer to dismiss top adviser over Mandelson scandal. Some Labour MPs blame Morgan McSweeney for the peer’s appointment as US ambassador despite his links to Jeffrey Epstein." (Article 13)
Why the unwavering defence of McSweeney from Starmer? Is it a belief in his aide's competence, a desire to avoid admitting a mistake in his own judgment regarding his staff, or a political calculation about the consequences of firing such a senior figure?
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The "Lies" and the "Weakness": Starmer's Apology and Its Aftermath
Keir Starmer has issued apologies to the victims of Jeffrey Epstein, admitting he "believed Mandelson's lies." This apology, however, has been met with a mixed reception, with some MPs seeing it as too little, too late, and others questioning the very framing of his admission.
The Apology's Content: Starmer expressed sorrow for Mandelson's lies, for those in power who failed, and for believing Mandelson. (Article 1)
Perception of Weakness: Critically, the admission of being lied to by Mandelson is seen by some as making Starmer appear "weak and naive and gullible," rather than strong and decisive. (Article 1, 3)
MP Frustration: Many Labour MPs are reportedly "furious" and "mutinous" over the handling of the scandal, with some warning that Starmer's "days as Prime Minister are numbered." (Articles 2, 5, 6)
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"But he’s never looked more vulnerable. Starmer has never looked more vulnerable as he scraps for his future… This was a plea to be believed that he – Sir Keir – is a man of integrity, even if he fouled up over his decision to hand Lord Mandelson a ticket to Washington." (Article 3)
If an apology, intended to reset the narrative and demonstrate integrity, instead paints the leader as gullible, what does that say about the depth of the crisis? Has the damage to his perceived leadership already been done?

Documents, Investigations, and the Looming Release
The controversy has been amplified by the protracted process of releasing documents related to Mandelson's vetting. The Metropolitan Police have reportedly blocked the release of certain documents, citing the potential to prejudice ongoing criminal investigations. This has led to frustration and speculation.
Vetting Papers: Documents concerning Mandelson's appointment and the vetting process are crucial for understanding how the decision was made. (Article 4, 9)
Police Blockage: The Met's intervention has stalled the release, with fears that it could take "weeks." (Article 4)
Potential for Embarrassment: The release of electronic communications with ministers and officials is seen as potentially "embarrassing for the Government." (Article 13)
Mandelson's Stance: While not publicly commenting, reports suggest Mandelson maintains he did not act criminally and that his actions were not for personal gain, even arguing he sought Epstein's "expertise in the national interest." (Article 13, 14)
What is truly contained within these documents that warrants police intervention? Is it evidence of more profound wrongdoing, or is the obstruction a tactic to delay further political damage? And if Mandelson sought Epstein's "expertise," what was that expertise and why was it considered necessary for a diplomatic role?

A Leadership in Question: Starmer's "Untenable" Position
The core of the current political drama is whether Keir Starmer can recover from this scandal. The pressure to sack his chief of staff, Morgan McSweeney, is immense, with many MPs believing it's a necessary step for Starmer to salvage his premiership.
The Demand: Numerous MPs are urging Starmer to dismiss McSweeney. (Articles 8, 9, 13, 15)
The "Untenable" Threshold: Some senior figures believe Starmer's position becomes "untenable" if McSweeney remains in post. (Article 1)
Leadership Survival: Starmer's survival as Prime Minister is seen as intrinsically linked to the fate of his closest aide. (Article 16)
Deep Divisions: The party is described as having a "dark mood," with backbenchers at "boiling point." (Article 10, 6)
"Starmer’s position ‘untenable’ if chief of staff Morgan McSweeney is not fired over Mandelson scandal." (Article 1)
If McSweeney is sacked, does it resolve the core issue of Starmer's judgment and his administration's vetting processes? Or does it merely shift the focus of blame? Conversely, if McSweeney is not sacked, and Starmer continues to face internal dissent, how long can he realistically maintain leadership under such sustained pressure? The coming days, and the content of the released documents, will be critical in determining whether Keir Starmer can navigate this storm, or if the Mandelson affair marks the beginning of the end of his time in office.
Sources
Article 3: Starmer apologises to Epstein victims for appointing Mandelson and 'believing his lies'
Article 4: No 10 defies calls to sack Morgan McSweeney over Mandelson appointment
Article 5: Labour MPs say Starmer’s days as PM are numbered amid fury over Mandelson
Article 6: Tracker: Labour MPs who have criticised Starmer over the Mandelson affair
Article 7: Keir Starmer apologises to Jeffrey Epstein victims for believing Mandelson's 'lies'
Article 8: 'Weak' Keir Starmer on the brink as top Labour figure issues dire warning to PM
Article 9: Starmer urged to sack Morgan McSweeney over Mandelson appointment
Article 10: Call for Prime Minister Keir Starmer to resign amid Lord Mandelson scandal
Article 12: Labour MPs say Starmer’s days as PM are numbered amid fury over Mandelson (Note: This link is to Article 10. Article 12's provided link was for a different event and not directly relevant to the core Mandelson/McSweeney issue as presented in other articles.)
Article 13: Pressure mounts on Starmer to dismiss top adviser over Mandelson scandal
Article 14: Starmer finally says 'sorry' over Mandelson scandal as he fights for survival as PM
Article 15: Starmer faces renewed calls to sack chief of staff over Mandelson scandal
Article 16: How Starmer’s survival depends on the fate of his right-hand man
Article 17: MPs demand no confidence vote in Keir Starmer as Labour backbenchers break ranks