James Roscoe

James Roscoe combined diplomatic postings with senior communications work in Downing Street and the Royal Household. He worked in Basra with the Coalition Provisional Authority, in Sierra Leone, and at Britain's UN mission, where his responsibilities included sanctions, counterterrorism, and counterproliferation. He later served as the Queen's communications secretary and directed communications in the Cabinet Office and the Department for Exiting the European Union. ¹

After representing Britain at the UN General Assembly from 2019, Roscoe became deputy head of mission in Washington in July 2022. He led the embassy as chargé d'affaires from September 2025 to February 2026, during the interval between Peter Mandelson's departure and Christian Turner's arrival. He remained deputy head of mission until May 2026. ¹