Morgan McSweeney, a key aide to Prime Minister Keir Starmer, has resigned from his position as Chief of Staff. His departure follows a resurgence of controversy surrounding the decision to appoint Lord Peter Mandelson to a diplomatic role, particularly in light of newly released files related to Jeffrey Epstein.
McSweeney's resignation, announced shortly after the latest Epstein files emerged, brings to a close his tenure as a central figure in Starmer's administration. The core of the controversy centers on Mandelson's past dealings and associations, which have been re-examined following the release of documents linked to the convicted sex offender Jeffrey Epstein. This renewed scrutiny has placed McSweeney, who advised on Mandelson's appointment, under significant pressure.

Timeline of Events
The controversy leading to McSweeney's resignation appears to have been rekindled by the recent release of documents connected to Jeffrey Epstein. These documents have brought to light new details regarding Peter Mandelson's past, specifically his alleged sharing of confidential information while serving as a cabinet minister.
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Recent Epstein Files Release: New files concerning Jeffrey Epstein have surfaced, re-igniting scrutiny of past figures.
Mandelson Appointment Controversy: The decision to appoint Lord Mandelson to a diplomatic role, advised by McSweeney, has been drawn into the spotlight.
McSweeney's Resignation: Morgan McSweeney has stepped down as Chief of Staff, stating he takes "full responsibility" for advising on Mandelson's appointment.
Key Figures and Roles
The unfolding situation involves several prominent individuals and their actions:

Morgan McSweeney: Prime Minister Keir Starmer's Chief of Staff. He has resigned, taking responsibility for advising on the appointment of Peter Mandelson. McSweeney is described as instrumental in Starmer's rise to power.
Keir Starmer: The Prime Minister. He made the decision to appoint Peter Mandelson, a decision now under scrutiny. Starmer has reportedly been accused by McSweeney of making "terrible decisions."
Peter Mandelson: A former cabinet minister whose appointment to a diplomatic role is the subject of controversy. His past associations, particularly with Jeffrey Epstein, have resurfaced.
Circumstantial Evidence and Questions
While direct causation is difficult to establish, the timing and statements suggest a strong connection between the Epstein file release, Mandelson's appointment, and McSweeney's resignation.
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Timing of Resignation: McSweeney resigned shortly after the release of new Epstein files, which renewed focus on Mandelson's past. Does this timing indicate a direct response to the newly revealed information?
McSweeney's Statement: McSweeney stated, "The decision to appoint Peter Mandelson was wrong. He has damaged our party, our country and trust in politics itself." Who was McSweeney specifically addressing or intending to inform with this public declaration?
Mandelson's Past Associations: The controversy is linked to Mandelson's alleged sharing of confidential information with Epstein. What specific nature of this alleged sharing has prompted such a significant fallout?
Starmer's Responsibility: McSweeney's resignation letter, as reported, also states, "Keir Starmer has to take responsibility for his own terrible decisions." Is this an attempt to deflect blame, or a genuine assessment of the Prime Minister's role?
McSweeney's Declaration of Responsibility
In his resignation statement, Morgan McSweeney has explicitly stated his acceptance of fault.
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"After careful reflection, I have decided to resign from the government. The decision to appoint Peter Mandelson was wrong. He has damaged our party, our country and trust in politics itself. In public life responsibility must be owned when it matters most, not just when it is most convenient."
McSweeney takes "full responsibility" for advising on Mandelson's appointment.
He views the appointment as having caused harm to the party, the country, and public trust.
His statement suggests a principle of accountability that he believes should be upheld.
Public and Political Reaction
Reports indicate that some Members of Parliament (MPs) have reacted positively to the news of McSweeney's resignation.
Welcome from MPs: Some Labour MPs have expressed approval of McSweeney stepping down.
Increased Criticism: McSweeney faced mounting criticism leading up to his departure, specifically concerning his recommendation of Mandelson for the US ambassador role.
Conclusion
Morgan McSweeney's resignation as Chief of Staff is directly linked to the renewed controversy surrounding the appointment of Peter Mandelson, amplified by the recent release of information pertaining to Jeffrey Epstein. McSweeney has publicly accepted responsibility for his role in advising on this appointment, characterizing it as detrimental. The situation highlights the delicate balance of trust and accountability in political appointments, particularly when past associations come under renewed public scrutiny.
Sources Used:
The Guardian: "Morgan McSweeney says he takes ‘full responsibility’ for advising Starmer to appoint Mandelson as he resigns as chief of staff – UK politics live" (Published 14 hours ago). Link: https://www.theguardian.com/politics/live/2026/feb/08/peter-mandelson-payoff-keir-starmer-jeffrey-epstein-ambassadoruk-politics-live-news-updates
BBC News: "Morgan McSweeney quits as PM's chief of staff following Mandelson scandal" (Published 31 minutes ago). Link: https://www.bbc.com/news/live/c74wd01egvyt
Sky News: "Starmer's top aide Morgan McSweeney resigns" (Published 14 hours ago). Link: https://news.sky.com/story/starmers-top-aide-morgan-mcsweeney-resigns-13431484
Metro: "Keir Starmer's top adviser Morgan McSweeney resigns over Mandelson scandal" (Published 14 hours ago). Link: https://metro.co.uk/2026/02/08/keir-starmers-top-adviser-morgan-mcsweeney-resigns-mandelson-scandal-26721051/
Evening Standard: "Morgan McSweeney resigns as Starmer’s chief of staff following Mandelson controversy" (Published 14 hours ago). Link: https://www.standard.co.uk/news/uk/morgan-mcsweeney-resigns-as-starmer-s-chief-of-staff-following-epstein-scandal-b1270117.html
Financial Times: "Pressure grows on Keir Starmer’s chief of staff over Peter Mandelson ambassador appointment" (Published 4 days ago). Link: https://www.ft.com/content/7a1669c5-4915-49f6-9fa7-583d1385405c
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