Name
- Persian Gulf Lighting Service, c 1911-1966[remove]8
- Admiralty, 1708-19643
- HM Treasury, 12th century-3
- Viceroy and Governor-General of India in Council, 1773-19473
- Chamber of Shipping, United Kingdom, 1878-2
- Foreign Office, 1782-19682
- Government of India, Marine Department, Early 20th century2
- Port Directorate, Basra, Early 20th century-Mid 20th century2
- Secretary of State for India, United Kingdom, 1858-19352
- Arabian American Oil Company, 1933-19881
- Bahrain Petroleum Company, 1929-1
- Board of Trade, Mercantile Marine Department, 1850-19391
- British Embassy in Iraq, Baghdad, 1932-1
- Council of Ministers, Iraq, 20th century-1
- Government of India, Commerce Department, 1872-19471
- Gray, Mackenzie and Company Limited, shipping agents, 1937-20101
- High Commissioner, Iraq, 1920-19321
- Indian Political Service, External Affairs Department, 1937-19471
- Ministry of Foreign Affairs, Iraq, 1924-1
- Persian Gulf Political Residency, 1822-19711