Knights Commander of the Order of St Michael and St George

Sir Reginald Fleming Johnston, (simplified Chinese: 庄士敦爵士; traditional Chinese: 莊士敦爵士; pinyin: Zhuāngshìdūn juéshì; lit. 'Sir Johnston'; 13 October 1874 – 6 March 1938) was a Scottish diplomat and colonial official who served as the tutor and advisor to Puyi, the last emperor of China. He was also the last British Commissioner of Weihaiwei. Johnston's book Twilight in the Forbidden City (1934) was used as a source for Bernardo Bertolucci's film dramatization of Puyi's life The Last Emperor.

Sir Owen St Clair O'Malley (4 May 1887 – 16 April 1974) was a British diplomat. He was Minister to Hungary between 1939 and 1941. He was British ambassador to the Polish government in exile in London during World War II. From July 1945 until May 1947, he was Ambassador to Portugal.

Sir Andrew Graham Gilchrist (19 April 1910 – 6 March 1993) was a British Special Operations Executive operative who later served as the United Kingdom's Ambassador to Ireland, Indonesia, and Iceland during the Cold War.

Sir Robert Hamilton Bruce Lockhart, KCMG (2 September 1887 – 27 February 1970) was a British diplomat, journalist, author, and secret agent. His 1932 book Memoirs of a British Agent became an international bestseller by telling of his experiences in Russia in 1918 following the Bolshevik Revolution. He left the country after he was accused of having led a failed plot to assassinate Vladimir Lenin, the so-called Ambassadors' plot, a charge which he always denied. Later research suggests that the "Lockhart Plot" was a sting operation orchestrated by Felix Dzerzhinsky with the goal of discrediting the British and French governments.