Name
- Foreign Office, 1782-19686
- Government of Persia, Qājār dynasty, 1794-19255
- British Legation, Tehran, c 1836-19444
- Government of Iran, Pahlavi dynasty, 1925-19793
- British Consul, Tabriz, 19th century-Mid 20th century2
- Democratic Party of Azerbaijan, 1945-19462
- Government of India, Foreign and Political Department, 1783-19372
- Government of the Russian Empire, 1721-19172
- Government of the Union of Soviet Socialist Republics, 1923-19912
- HM Ambassador to Iran, 1807-19802
- HM Ambassador to Iraq, 1932-2
- HM Ambassador to Saudi Arabia, 1930-2
- Imam of Yemen, 897-19622
- King of Saudi Arabia, 1932-2
- Prime Minister to the Shah of Persia, Qajar dynasty, 1794-19252
- Sultan of Muscat and Oman, Āl Bū Sa‘īd Dynasty, 1861-19702
- Admiralty, 1708-19641
- Anglo-Iranian Oil Company Limited, 1909-19541
- Azerbaijan People's Government, 1945-19461
- Bahrain Political Agency, 1900-19711