Name
- Indo-European Telegraph Department, 1862-1931[remove]31
- Foreign Office, 1782-196813
- British Legation, Tehran, c 1836-19449
- HM Ambassador to Iran, 1807-19806
- Cable and Wireless Ltd, 1929-19815
- Government of India, Foreign and Political Department, 1783-19375
- Government of Iran, Pahlavi dynasty, 1925-19794
- Indo-European Telegraph Company, 1868-19294
- Government of India, Industries and Labour Department, 1924-1937?3
- Government of Persia, Qājār dynasty, 1794-19253
- Persian Minister of Post and Telegraphs, early 20th century3
- Political Resident, Persian Gulf, 1822-19713
- Secretary of State for India, United Kingdom, 1858-19353
- British Bank of Iran and the Middle East, 1889-19522
- British Consul, Shiraz, 19th century-19522
- Government of India, Posts and Telegraphs Department, c 1877-19472
- HM Treasury, 12th century-2
- Minister for Foreign Affairs, Iran, 1821-2
- Persian Gulf Political Residency, 1822-19712
- Viceroy and Governor-General of India in Council, 1773-19472