Name
- Foreign Office, 1782-1968283
- HM Ambassador to Iran, 1807-1980126
- Political Resident, Persian Gulf, 1822-197199
- British Legation, Tehran, c 1836-194481
- Secretary of State for Foreign Affairs, 1782-196875
- Government of Iran, Pahlavi dynasty, 1925-197967
- Government of India, Foreign and Political Department, 1783-193761
- Government of Persia, Qājār dynasty, 1794-192554
- Government of India, 1834-194749
- Colonial Office, 1854-196644
- Viceroy and Governor-General of India in Council, 1773-194742
- Admiralty, 1708-196430
- HM Ambassador to the Ottoman Empire, 1583-191428
- Sultan of Muscat and Oman, Āl Bū Sa‘īd Dynasty, 1861-197025
- High Commissioner, Iraq, 1920-193223
- Persian Gulf Political Residency, 1822-197123
- Anglo-Iranian Oil Company Limited, 1909-195422
- British Bank of Iran and the Middle East, 1889-195222
- High Commissioner, Egypt, 1914-193622
- War Office, 1857-196421