Kim Darroch https://en.wikipedia.org/wiki/Kim_Darroch

Sir Nigel Kim Darroch KCMG ( /ˈdærək/; born 30 April 1954) is a senior British diplomat, who has served as the British Ambassador to the United States since January 2016

Darroch was appointed a Companion of Order of St. Michael & St. George (CMG) in the 1997 New Year Honours,[21] and as a Knight Commander (KCMG) in the 2008 Birthday Honours.

Honours (especially Knight Commander) often indicates one is a member of the 'club'. So what was he doing at these times?

Darroch joined the Foreign and Commonwealth Office (FCO) in 1976.[3] He was appointed to the Diplomatic Service in 1980[8] to serve as a First Secretary in Tokyo from 1980 to 1984.[3] He served in a number of posts, including as desk officer for the Channel Tunnel project and co-secretary of the UK-French Channel Tunnel Treaty Group, as private secretary to David Mellor and then The Lord Glenarthur as the FCO's Minister of State from 1987 to 1989, and as Counsellor for External Affairs at the British Permanent Representative to the European Union for a year before being promoted to Director as head of the FCO's press office in 1998.

and..

In 2000, Darroch moved back to policy work as Director of EU Comd, and in 2003 promoted further to be Director-General, Europe. In 2004, he transferred to 10 Downing Street, as Head of the Cabinet Office European Secretariat, where he served as the Prime Minister's principal advisor on European affairs. After three years, Darroch was appointed to replace Sir John Grant in Brussels, as British Permanent Representative to the European Union in 2007 for a four-year term.