Name
- Foreign Office, 1782-1968251
- HM Ambassador to Iran, 1807-1980113
- Political Resident, Persian Gulf, 1822-197185
- British Legation, Tehran, c 1836-194478
- Secretary of State for Foreign Affairs, 1782-196874
- Government of Iran, Pahlavi dynasty, 1925-197964
- Government of India, Foreign and Political Department, 1783-193748
- Colonial Office, 1854-196643
- Viceroy and Governor-General of India in Council, 1773-194742
- Government of Persia, Qājār dynasty, 1794-192536
- Government of India, 1834-194733
- HM Ambassador to the Ottoman Empire, 1583-191427
- Admiralty, 1708-196426
- High Commissioner, Iraq, 1920-193223
- High Commissioner, Egypt, 1914-193622
- British Bank of Iran and the Middle East, 1889-195220
- Persian Gulf Political Residency, 1822-197120
- Political Resident, Aden, 1854-193220
- Anglo-Iranian Oil Company Limited, 1909-195419
- HM Ambassador to Russia, 1801-192219