Morgan McSweeney, the architect of Labour’s 2024 landslide victory and one of Keir Starmer’s most trusted aides, has stepped aside as Chief of Staff.
In a resignation announced on Sunday (8 February), McSweeney took full responsibility for advising the Prime Minister to appoint Peter Mandelson as UK Ambassador to the United States – a decision now widely regarded as one of the biggest missteps of the Starmer government.
His statement reads as follows:
“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.
“When asked, I advised the Prime Minister to make that appointment and I take full responsibility for that advice. In public life responsibility must be owned when it matters most, not just when it is most convenient. In the circumstances, the only honourable course is to step aside.
“This has not been an easy decision. Much has been written and said about me over the years but my motivations have always been simple: I have worked every day to elect and support a government that puts the lives of ordinary people first and leads us to a better future for our great country. Only a Labour government will do that. I leave with pride in all we have achieved mixed with regret at the circumstances of my departure. But I have always believed there are moments when you must accept your responsibility and step aside for the bigger cause.
“As I leave I have two further reflections:
“Firstly, and most importantly, we must remember the women and girls whose lives were ruined by Jeffrey Epstein and whose voices went unheard for far too long.
“Secondly, while I did not oversee the due diligence and vetting process, I believe that process must now be fundamentally overhauled. This cannot simply be a gesture but a safeguard for the future.
“I remain fully supportive of the Prime Minister. He is working every day to rebuild trust, restore standards and serve the country. I will continue to back that mission in whatever way I can. It has been the honour of my life to serve.”
A serious misstep
The fallout stems from revelations about Mandelson’s past associations with the late financier Jeffrey Epstein, whose crimes continue to cast long shadows over those linked to him.
What was intended as a bold diplomatic appointment quickly unravelled into a major scandal, fuelling intense criticism from Labour MPs and opposition benches alike. Several backbenchers had openly called for McSweeney’s removal in recent days, with some warning that his position had become untenable.
McSweeney, often described as Starmer’s right-hand man and a key figure in reshaping Labour into an election-winning force, acknowledged the personal toll of the decision.
The departure marks a significant blow to Downing Street at a time when the government is already navigating choppy waters. McSweeney was widely credited with the ruthless professionalism that delivered Labour’s historic majority less than two years ago. His exit leaves Starmer without one of his closest and most influential allies, raising fresh questions about the stability and direction of the administration.
As the dust settles, attention turns to who might replace the Irish-born strategist in one of the most powerful unelected roles in British politics. For now, the Prime Minister has lost a key pillar of his project, and the Mandelson saga has claimed its most prominent casualty yet.
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