Name
- Foreign Office, 1782-19683
- Government of Iran, Pahlavi dynasty, 1925-19792
- Government of Iraq, Early 20th century-Mid 20th century2
- HM Ambassador to Iran, 1807-19802
- HM Ambassador to Iraq, 1932-2
- King of Saudi Arabia, 1932-2
- Abu Dhabi Company for Onshore Oil Operations, 1936-1
- British Embassy in Iraq, Baghdad, 1932-1
- British Legation to Saudi Arabia, 1930-19471
- Emir of Qatar, Mid 19th century-1
- HM Chargé d'Affaires to Jeddah, 1930-Mid 20th century1
- Iraq Petroleum Company, 1912-1
- Kuwait Political Agency, 1899-19611
- Persian Gulf Political Residency, 1822-19711
- Petroleum Concessions Limited, 1935-1
- Petroleum Development Oman, 1937-1
- War Office, Geographical Section, 20th century1