Name
- Foreign Office, 1782-19683
- Political Resident, Persian Gulf, 1822-19713
- Admiralty Commission on the Persian Oilfields, 1913-19141
- Admiralty, 1708-19641
- Airwork Limited, 1928-19881
- Anglo-Iranian Oil Company Limited, 1909-19541
- Bahrain Petroleum Company, 1929-1
- Basra Petroleum Company Limited, 1938-19721
- British Embassy, Washington, Late 19th century-1
- Civil Commissioner, Mesopotamia, 1917-19201
- Euphrates and Tigris Steam Navigation Company, 1861-19601
- Geological Survey of India, 1851-1
- Government of India, Foreign and Political Department, 1783-19371
- Government of Iran, Pahlavi dynasty, 1925-19791
- Gray, Mackenzie and Company Limited, shipping agents, 1937-20101
- HM Ambassador to Iran, 1807-19801
- Kuwait Oil Company, 1934-1
- Kuwait Political Agency, 1899-19611
- Mackay, James Lyle, 1st Earl of Inchcape, 1852-19321
- Ministry of Civil Aviation, 1945-19531