Labour backbenchers have intensified pressure on Prime Minister Keir Starmer to overhaul his senior advisory team after the controversial appointment of former minister Peter Mandelson as UK ambassador to the United States.
What happened
On the Today programme, MP Simon Opher called for a “clearout” of Number 10 advisers, singling out Starmer’s chief of staff Morgan McSweeney, who advocated for Mandelson’s ambassadorship in 2024. Opher said Labour MPs are “angry” and want to discuss policy, not Mandelson.
Starmer has defended McSweeney in the Commons, saying no change is required, while Downing Street maintains the chief of staff’s confidence.
Parliament’s Intelligence and Security Committee (ISC) has issued a letter stating that all communications between Mandelson, ministers, officials and special advisers – including McSweeney – must be published, with the cabinet secretary to decide which documents are released “very shortly”.
Why it matters
The Mandelson appointment has reignited criticism of Starmer’s judgment, especially after the Prime Minister apologised to victims of Jeffrey Epstein for appointing a close friend of the convicted sex offender. Harriet Harman, a former Labour deputy leader, described the saga as making Starmer appear “weak, naive and gullible”.
Labour MPs fear that retaining McSweeney could render Starmer’s position “untenable”, as voiced by Hull East MP Karl Turner, who urged a “full reset” of No 10 advisers rather than demanding the Prime Minister’s resignation.
What may happen next
Analysts suggest that Starmer could either retain McSweeney to signal stability, or replace him to placate dissenting MPs. Either choice may influence the speed at which the ISC’s document disclosures proceed.
If McSweeney is dismissed, Labour backbenchers may view the move as a step toward rebuilding trust, potentially easing pressure on Starmer’s leadership. Conversely, keeping him could deepen the perception of a “untenable” position and fuel calls for a leadership challenge.
Frequently Asked Questions
Who is Morgan McSweeney?
McSweeney is Prime Minister Keir Starmer’s chief of staff, identified by the ISC as a special adviser whose communications with Peter Mandelson must be published.
Why are Labour MPs demanding his removal?
MPs argue that McSweeney’s role in pushing the Mandelson appointment contributed to a loss of confidence in Starmer’s judgment, and that his continued presence could make the Prime Minister’s position “untenable”.
What does the ISC require regarding Mandelson’s appointment?
The ISC’s letter states that all communications between Mandelson, ministers, officials and special advisers must be published, with the cabinet secretary deciding which documents are released, and any material affecting national security to be reviewed by the ISC.
What do you believe the next steps should be for the Prime Minister and his team?
