Name
- Foreign Office, 1782-19686
- Air Ministry, 1918-19644
- Imperial Airways, 1924-19394
- Junkers, aircraft manufacturer, 1895-19692
- Bahrain Petroleum Company, 1929-1
- British India Steam Navigation Company Limited, 1862-19711
- British Legation, Tehran, c 1836-19441
- Chief Censor, Nigeria, Early 20th century-Mid 20th century1
- Commonwealth Relations Office, 1947-19661
- General Post Office, 1660-19691
- HM Ambassador to Afghanistan, 1922-1
- HM Ambassador to Iran, 1807-19801
- HM Minister to Siam, 1902-19471
- Indo-European Telegraph Department, 1862-19311
- Iranian State Airlines, 1938-19461
- Ministry of Information, 1939-19461
- Persian Gulf Political Residency, 1822-19711
- Political Agent, Bahrain, 1905-19711
- Political Resident, Persian Gulf, 1822-19711
- Postal and Telegraph Censorship Department, 1940-19461