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Jonathan Powell Declines Chief of Staff Role Amid Controversy

2/16/2026, 12:33:27 AM

Key Developments in Downing Street

Jonathan Powell, currently serving as Keir Starmer’s national security adviser, has declined an offer to become the chief of staff following the resignation of Morgan McSweeney. Powell's decision is reportedly influenced by his desire to return to his mediation consultancy, Inter-Mediate, which he established in 2011. Sources close to Powell indicate that he is considering leaving his position at Downing Street by the end of the year. However, Downing Street officials have firmly denied any plans for Powell to step down, asserting that he will continue in his current role.

Context of the Resignation

Morgan McSweeney resigned amid ongoing controversy surrounding Peter Mandelson’s appointment as British ambassador to Washington. Powell had previously advised against Mandelson's appointment, citing concerns based on his experiences during Tony Blair's administration, where he witnessed Mandelson's handling of controversies. This opposition reflects a broader sentiment within the government, as David Lammy, the foreign secretary, also expressed disapproval of the appointment, suggesting that such roles should be filled by professional diplomats rather than former politicians.

Powell's Role and Contributions

As national security adviser, Powell has been instrumental in shaping Starmer's foreign policy, particularly in fostering relationships with the United States and Europe. His efforts are viewed as a significant aspect of Starmer's tenure at No 10. Powell has also been involved in critical discussions regarding the UK’s foreign policy, including the contentious decision to transfer the Chagos Islands to Mauritius and support for Ukraine amidst ongoing conflicts.

Powell's consultancy, Inter-Mediate, has a history of facilitating peace negotiations, including the 1999 Good Friday Agreement and efforts to resolve the Basque conflict. His expertise in conflict resolution has made him a valuable asset to the UK government, particularly in navigating complex international relations.

Criticism and Opposition

The decision to appoint Mandelson has faced criticism not only from Powell but also from other senior officials, highlighting a potential disconnect between Starmer's leadership and the advice from experienced diplomats. Critics argue that the appointment undermines the importance of professional diplomatic expertise in high-level positions.

Official Statements & Responses

Downing Street sources have categorically denied any claims that Powell was offered the chief of staff position, asserting that he remains committed to his role as national security adviser. They have refrained from commenting on the specific advice Powell provided regarding Mandelson's appointment.

Verbatim Quotes

  • “David Lammy, who was foreign secretary at the time of the appointment, has also let it be known that he opposed the plan, but he may have been reflecting a Foreign Office view that such a high-level diplomatic appointment should go to a professional diplomat and not a former Labour minister.” — David Lammy, Foreign Secretary

What's Next

The controversy surrounding Mandelson's appointment is expected to lead to further scrutiny, particularly with the release of internal government memos related to the decision. This documentation may provide additional insights into the dynamics within Starmer's administration and the ongoing challenges faced by his government.