Name
- Foreign Office, 1782-196848
- Political Resident, Persian Gulf, 1822-197146
- Persian Gulf Political Residency, 1822-197128
- Bahrain Petroleum Company, 1929-23
- Emir of Kuwait, 1718-18
- HM Ambassador to Iran, 1807-198018
- Political Agent, Bahrain, 1905-197116
- Petroleum Concessions Limited, 1935-15
- Bahrain Political Agency, 1900-197113
- Admiralty, 1708-196411
- Indian Political Service, External Affairs Department, 1937-194711
- King of Bahrain, 1783-11
- Kuwait Political Agency, 1899-196111
- Kuwait Oil Company, 1934-10
- Anglo-Iranian Oil Company Limited, 1909-19549
- Political Agent, Kuwait, 1904-19619
- Abu Dhabi Company for Onshore Oil Operations, 1936-8
- Air Ministry, 1918-19648
- Emir of Qatar, Mid 19th century-8
- King of Saudi Arabia, 1932-8