Principal private secretaries to the prime minister

Sir Oliver Robbins is a British former senior civil servant who served as the Prime Minister's Europe Adviser, the chief Brexit negotiator from 2017 to 2019, and Permanent Under-Secretary at the Foreign Office from 2025 to 2026.

British Liberal and later Labour politician and pacifist (1871-1946)

British diplomat (1881-1957)

British peer and Conservative politician (1852-1925)

British diplomat (born 1951)

British colonial administrator and politician (1879-1955)

British politician (1880–1960)

British civil servant (born 1938)

British civil servant

British diplomat, born 1968

British civil servant (born 1945)

British civil servant and diarist (1915-1987)

British civil servant and peer (1927-2020)

British civil servant (1961-2018)