On 8 February 2026, Morgan McSweeney, chief of staff to U.K. Prime Minister Keir Starmer, resigned amid revelations linking Peter Mandelson to extended contact with the convicted sex offender Jeffrey Epstein. The decision follows newly released U.S. Department of Justice materials that indicate Mandelson remained in touch with Epstein longer than he had publicly acknowledged and may have forwarded internal financial correspondence after the 2008 banking crash. McSweeney said he had advised Starmer to appoint Mandelson and accepted responsibility, calling the appointment “wrong” and damaging to public trust. His departure removes a senior and long-serving aide at a moment when some Labour MPs are privately urging the prime minister to consider his future.
Key Takeaways
- Morgan McSweeney resigned as Downing Street chief of staff on 8 February 2026 after revelations about Peter Mandelson’s contacts with Jeffrey Epstein.
- U.S. Department of Justice documents released in early February 2026 show Mandelson maintained contact with Epstein beyond what he previously disclosed.
- Emails published by U.S. authorities reportedly include messages in which Mandelson forwarded details of internal financial discussions dating to the 2008 crisis.
- Mandelson was appointed ambassador to Washington in December 2024, sacked in September 2025, and has since resigned his Labour Party membership and his seat in the House of Lords.
- Jill Cuthbertson and Vidhya Alakeson were named acting joint chiefs of staff immediately after McSweeney’s resignation, according to a senior U.K. official.
- The resignation increases pressure on Prime Minister Keir Starmer, with some MPs privately calling for him to consider his position.
- McSweeney framed his departure as taking “full responsibility” for advising the Mandelson appointment and said stepping aside was the only honourable option.
Background
The controversy centers on documents released by U.S. authorities that expand the public record about Peter Mandelson’s interactions with Jeffrey Epstein, who was convicted in the United States before his death. Mandelson, once a senior Labour figure and a close contact of party leadership, was appointed ambassador to Washington in December 2024, a role that placed him at the centre of international political representation for the government. Questions about the extent and timing of Mandelson’s contact with Epstein intensified after the U.S. Department of Justice published further emails in early February 2026, some of which appear to show Mandelson sharing material related to financial discussions following the 2008 banking crash.
Public scrutiny has grown because of the sensitive nature of Epstein’s crimes and the political risks attached to high-profile appointments. The British government and Labour Party faced immediate criticism for vetting and appointing Mandelson despite earlier disclosures about his association with Epstein. In September 2025, after earlier revelations, Mandelson was dismissed from his ambassadorial role; the February 2026 disclosures prompted him to relinquish Labour membership and his House of Lords seat. The episode has reignited debates about ministerial responsibility, vetting standards for political appointees, and how parties manage reputational risk.
Main Event
On 8 February 2026, Morgan McSweeney submitted his resignation as chief of staff at No. 10 Downing Street. The move was announced after McSweeney issued a public statement acknowledging he had advised Prime Minister Starmer to appoint Mandelson and saying the decision was “wrong.” A senior U.K. official confirmed that McSweeney’s deputies, Jill Cuthbertson and Vidhya Alakeson, would take over as acting chiefs of staff with immediate effect. The resignation comes as the government contends with fallout from U.S. disclosures and heightened scrutiny from MPs and commentators.
The U.S. Department of Justice documents, released in early February, reportedly include emails indicating Mandelson remained in contact with Epstein well beyond previously acknowledged dates. Some messages that were published appear to show Mandelson forwarding notes on private financial discussions tied to the aftermath of the 2008 banking crash. Those details have been seized on by critics as evidence of poor judgment in appointing Mandelson to a high-profile diplomatic role.
Within Labour, the reaction was swift and fractious. Several MPs and former ministers have publicly and privately criticized the party leadership’s handling of the Mandelson appointment, arguing the episode has damaged public trust. According to party insiders, calls for clear accountability have included demands that Starmer explain what he knew before appointing Mandelson and why the appointment went ahead despite earlier concerns. Downing Street sources said the prime minister had emailed No. 10 staff to inform them of McSweeney’s resignation late on Sunday night.
Analysis & Implications
The immediate political implication is a loss of an experienced operator from Starmer’s inner circle at a fraught moment. McSweeney served as a key strategic aide during Starmer’s ascent from party leader to prime minister, and his departure reduces continuity within the senior team. That disruption could complicate the government’s response to the scandal and its broader legislative agenda, particularly if it reverberates in the parliamentary party and media coverage over coming weeks.
For the Labour Party, the scandal raises deeper questions about appointment processes and risk assessment. Appointing a figure with known links to Jeffrey Epstein was always going to be politically sensitive; the release of further documents by U.S. authorities has magnified the reputational cost. The episode may prompt a review of vetting procedures for senior roles, both to restore public confidence and to insulate the leadership from future controversies.
Domestically, pressure from MPs to hold the leadership to account could intensify if more documents or corroborating evidence emerges. Internationally, the affair underscores the transnational reach of the Epstein files and how U.S. disclosures can shape domestic politics in allied countries. If investigators find evidence that laws were broken in the exchange of material, that could lead to further inquiries, though there is no public indication of criminal charges linked directly to Mandelson at this stage.
Comparison & Data
| Date | Event |
|---|---|
| December 2024 | Peter Mandelson appointed U.K. ambassador to Washington |
| September 2025 | Mandelson sacked following earlier revelations about Epstein links |
| Early February 2026 | U.S. Department of Justice publishes additional emails concerning Mandelson and Epstein |
| 8 February 2026 | Morgan McSweeney resigns as chief of staff |
The timeline shows a sequence from appointment to dismissal to renewed disclosures and a senior aide’s resignation. That compressed chronology has concentrated political scrutiny within a 14-month window, highlighting how new documentary releases can reopen controversies that appeared settled. The table captures the key public milestones cited by officials and news reports.
Reactions & Quotes
“The decision to appoint Mandelson was wrong and damaged our party, our country and trust in politics itself.”
Morgan McSweeney (Resignation statement)
“In public life responsibility must be owned when it matters most, not just when it is most convenient.”
Morgan McSweeney (Resignation statement)
Those statements framed McSweeney’s departure as an act of accountability. Party insiders described his resignation as intended to draw a line under a source of contention, while critics said it did not fully answer why Mandelson was appointed in the first place. Officials at No. 10 confirmed the immediate elevation of Cuthbertson and Alakeson to acting co-chiefs of staff to maintain operational continuity.
Unconfirmed
- Whether Prime Minister Keir Starmer knew the full extent of Mandelson’s contacts with Epstein before appointing him remains publicly unconfirmed.
- It is not yet confirmed whether the emails released contain evidence that would meet criminal thresholds in the U.K.; investigations are ongoing.
- Reports that further undisclosed documents exist have circulated, but their contents and provenance are not independently verified.
Bottom Line
Morgan McSweeney’s resignation is both a personal admission of responsibility and a strategic attempt by Downing Street to steady the ship amid renewed fallout from the Mandelson-Epstein disclosures. It removes a close Starmer lieutenant but does not, by itself, resolve broader questions about appointment decisions and internal vetting processes that the Labour leadership will now have to address.
For the government, the next weeks will be critical: answering parliamentary questions, cooperating with any formal inquiries, and rebuilding public confidence. If further documents or corroborating evidence emerge, the episode could deepen, with potential consequences for individual careers and the party’s standing with voters ahead of future political milestones.
Sources
- Politico Europe (news)
- U.S. Department of Justice (official release of documents)