Name
- Foreign Office, 1782-19683
- British Legation, Tehran, c 1836-19442
- Government of India, Foreign and Political Department, 1783-19372
- Indo-European Telegraph Company, 1868-19292
- Indo-European Telegraph Department, 1862-19312
- Cable and Wireless Ltd, 1929-19811
- Colonial Office, 1854-19661
- Government of India, 1834-19471
- Government of India, Industries and Labour Department, 1924-1937?1
- Government of Persia, Qājār dynasty, 1794-19251
- HM Ambassador to Iran, 1807-19801
- High Commissioner, Iraq, 1920-19321
- Persian Minister of Post and Telegraphs, early 20th century1
- Political Resident, Persian Gulf, 1822-19711