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James Roscoe is a British diplomat who has served as the British Chargé d’affaires ad interim to the United States since the dismissal of Peter Mandelson as British ambassador in September 2025. He previously served in that position in February 2025, between the departure of Karen Pierce and the appointment of Mandelson.
Roscoe has previously worked for His Majesty’s Diplomatic Service in Iraq, Sierra Leone and the UK Mission to the UN.[3]
Between 2006 and 2009, Roscoe was the chief press officer to prime ministers Tony Blair and Gordon Brown.[3] He served as communications secretary to Queen Elizabeth II from 2013 to 2016.[1]
In September 2025, Roscoe became chargé d’affaires ad interim to the United States following the dismissal of Peter Mandelson as ambassador by prime minister Keir Starmer, amid controversy surrounding Mandelson’s association with the convicted sex offenders Jeffrey Epstein and Ghislaine Maxwell.[2]
Early and personal life
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Roscoe attended Ysgol Aberconwy in Conwy, Wales and maintains close connections to Conwy.[4] He met his wife, British broadcaster Clemency Burton-Hill in Sierra Leone in 2006, and has two sons, Tomos and Joe.[1]
