Name
- Foreign Office, 1782-19683
- HM Ambassador to Afghanistan, 1922-3
- Indian Political Service, External Affairs Department, 1937-19473
- Royal Air Force, 1918-3
- Foreign Ministry, Afghanistan, 1907-2
- Government of India, Foreign and Political Department, 1783-19372
- Air France, 1933-1
- British Overseas Airways Corporation, 1939-19741
- Government of India, Foreign Secretary, 1843-19371
- HM Ambassador to Iran, 1807-19801
- HM Ambassador to Iraq, 1932-1
- Imperial Airways, 1924-19391
- Koninklijke Luchtvaart Maatschappij, airline, 1919-1
- Persian Gulf Political Residency, 1822-19711
- Sultan of Muscat and Oman, Āl Bū Sa‘īd Dynasty, 1861-19701
- Surveyor General, India, 1815-1