Sir Antony Arthur Acland was a British diplomat and a provost of Eton College.
Sir Matthew John Rycroft is a British civil servant and diplomat serving as Permanent Under-Secretary of State at the Home Office since 2020,appointed following the resignation of Sir Philip Rutnam. Rycroft previously served as Permanent Secretary at the Department for International Development (DFID) from 2018 to 2020 and as the Permanent Representative to the United Nations in New York from 2015 to 2018.
Sir John Eaton Holmes is a British former diplomat who is the current Chairman of the Electoral Commission.
Peter Forbes Ricketts,Baron Ricketts,is a retired British senior diplomat and a life peer. He has sat as a crossbencher in the House of Lords since 2016.
Sir Geoffrey Doyne Adams served as the British Ambassador to Egypt from 2018 to 2021,as a member of the British Diplomatic Service. He was Ambassador to the Netherlands from 2013 to 2017.
Sir Simon James Fraser is a British former diplomat who served as the Permanent Under-Secretary of the Foreign and Commonwealth Office from August 2010 to July 2015,having served as Permanent Secretary of the Department for Business,Innovation and Skills from May 2009 to August 2010. Sir Simon is a Trustee of the Patchwork Foundation,founded by Harris Bokhari. Sir Simon is currently Deputy Chairman of Chatham House and serves as Adviser to the Europe Programme. He is also Managing Partner of Flint Global.
Nigel Kim Darroch,Baron Darroch of Kew,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.
Mark Philip Sedwill,Baron Sedwill,is a British diplomat and senior civil servant who served as Cabinet Secretary and Head of the Home Civil Service to Prime Ministers Theresa May and Boris Johnson from 2018 to 2020. He also served as the United Kingdom National Security Adviser from 2017 to 2020. He was previously the United Kingdom's Ambassador to Afghanistan from 2009 to 2010 and the NATO Senior Civilian Representative in Afghanistan in 2010. He was the Permanent Under-Secretary of State at the Home Office from February 2013 to April 2017.
The National Security Adviser (NSA) is a senior official in the Cabinet Office,based in Whitehall,who serves as the principal adviser to the Prime Minister of the United Kingdom and Cabinet of the United Kingdom on all national security issues. The NSA post was created in May 2010 as part of the reforms that also saw the creation of the National Security Council. There have been six holders of the office to date,of whom two served more than three years in the post.
Sir Simon Lawrance Gass is a British civil servant. He chaired the Joint Intelligence Committee from 2019 to 2023 and served as the British Prime Minister's representative on Afghanistan from 2021 to 2022 concurrently. Between 2018 and 2019,he was the Commandant of the Royal College of Defence Studies. During his diplomatic career,he served as British ambassador to Greece and to Iran. In May 2023,it was announced he was stepping down as Chairman of the Joint Intelligence Committee and succeeded by Madeleine Alessandri.
Sir Martin Eugene Donnelly,is a British former civil servant. He was Permanent Secretary of the Department for International Trade,until leaving the Civil Service on 24 March 2017.
Dame Karen Elizabeth Pierce,Lady Roxburgh,,is a British diplomat who is currently British Ambassador to the United States at the Foreign,Commonwealth and Development Office,and was previously the Permanent Representative of the United Kingdom to the United Nations.
Sir Brian James Proetel Fall is a retired British diplomat who was the UK's Special Representative for the South Caucasus 2002–12.
Sir Timothy Earle Barrow is a British diplomat who served as Permanent Representative of the United Kingdom to the European Union from 2017 to 2020 and as the British Ambassador to the European Union from 2020 to 2021. He currently serves as National Security Adviser.
Sir John Adam Thomson,was a British diplomat who served as High Commissioner to India and Permanent Representative to the United Nations.
Simon Gerard McDonald,Baron McDonald of Salford,is a British former diplomat who was the Permanent Under-Secretary at the Foreign and Commonwealth Office and Head of the Diplomatic Service until September 2020. He was the last professional head of the Foreign &Commonwealth Office before the creation of the Foreign,Commonwealth and Development Office. He has been the Master of Christ's College,Cambridge since September 2022.
Sir Philip Robert Barton is a British diplomat,currently the Permanent Under-Secretary of the Foreign,Commonwealth and Development Office. He was previously British High Commissioner to India;he was High Commissioner to Pakistan from 2014 to 2016.
Dame Sarah MacIntosh is a British diplomat who is the Deputy National Security Adviser for International Affairs. She previously served as High Commissioner to Sierra Leone,Ambassador to Liberia and British Ambassador to NATO from 2017 to 2022.
Peter Michael Alexander Wilson is a civil servant whose most recent post was to serve as Principal Private Secretary to the Prime Minister of the United Kingdom. He has also served as British Ambassador to Brazil,British Ambassador to the Netherlands and Permanent Representative of the United Kingdom to the Organisation for the Prohibition of Chemical Weapons.
Michael Harry Tatham is a British diplomat,serving since January 2018 as the deputy British Ambassador to the United States. Following the resignation of Kim Darroch in July 2019,he became chargéd'affaires ad interim.
