Kim Darroch, Baron Darroch of Kew, KCMG is a former British diplomat. He served as the British Ambassador to the United States between January 2016 and December 2019, and previously as National Security Adviser and UK Permanent Representative to the European Union. On 10 July 2019, following the leak of diplomatic cables in which he had been critical of the Trump presidential administration, he resigned from his position as HM Ambassador in Washington. Darroch concluded his post in December 2019 upon retirement from HM Diplomatic Service after a career spanning 40 years of public service.