Name
- Foreign Office, 1782-1968273
- HM Ambassador to Iran, 1807-1980100
- Political Resident, Persian Gulf, 1822-197182
- British Legation, Tehran, c 1836-194477
- Government of Iran, Pahlavi dynasty, 1925-197966
- Secretary of State for Foreign Affairs, 1782-196865
- Government of India, Foreign and Political Department, 1783-193760
- Colonial Office, 1854-196643
- Government of Persia, Qājār dynasty, 1794-192542
- Viceroy and Governor-General of India in Council, 1773-194740
- Government of India, 1834-194739
- Admiralty, 1708-196429
- High Commissioner, Iraq, 1920-193223
- High Commissioner, Egypt, 1914-193622
- Sultan of Muscat and Oman, Āl Bū Sa‘īd Dynasty, 1861-197021
- Anglo-Iranian Oil Company Limited, 1909-195420
- British Bank of Iran and the Middle East, 1889-195220
- Political Resident, Aden, 1854-193219
- War Office, 1857-196419
- Government of Bombay, Political Department, 1754-1934?17