Keir Starmer’s top adviser Morgan McSweeney resigns over Mandelson scandal

Downing Street Chief of Staff Morgan McSweeney arrives into Downing Street on October 06, 2025 in London (Photo by Leon Neal/Getty Images)

Morgan McSweeney, the mastermind behind Sir Keir Starmer’s rise to power as Labour leader and Prime Minister, has resigned as the Downing Street Chief of Staff.

The departure comes after controversy over the decision to appoint Peter Mandelson as the UK’s ambassador to the US flared back up following the latest Epstein files release.

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