Name
- British Bank of Iran and the Middle East, 1889-19522
- Colonial Office, 1854-19662
- Foreign Office, 1782-19682
- Government of India, Foreign and Political Department, 1783-19372
- Political Resident, Persian Gulf, 1822-19712
- Admiralty, 1708-19641
- Adviser to the Government of Bahrain, 1926-19571
- Bahrain Petroleum Company, 1929-1
- British Commissioner, Turco-Persian Frontier Commission, Early 20th century1
- British Consul, Shiraz, 19th century-19521
- British Legation, Tehran, c 1836-19441
- Eastern and General Syndicate Limited, oil company, 1920-19391
- Emir of Kuwait, 1718-1
- HM Ambassador to Iran, 1807-19801
- HM Ambassador to Saudi Arabia, 1930-1
- HM Ambassador to the Ottoman Empire, 1583-19141
- Indo-European Telegraph Department, 1862-19311
- King of Bahrain, 1783-1
- King of Hejaz and Najd, 1927-19321
- Petroleum Division, 1929-19701