Name
- Foreign Office, 1782-19681,119
- Political Resident, Persian Gulf, 1822-1971912
- Persian Gulf Political Residency, 1822-1971386
- HM Ambassador to Iran, 1807-1980356
- Government of India, 1834-1947329
- Government of India, Foreign and Political Department, 1783-1937324
- Indian Political Service, External Affairs Department, 1937-1947262
- Sultan of Muscat and Oman, Āl Bū Sa‘īd Dynasty, 1861-1970262
- Viceroy and Governor-General of India in Council, 1773-1947259
- Colonial Office, 1854-1966239
- British Legation, Tehran, c 1836-1944235
- War Office, 1857-1964223
- Secretary of State for Foreign Affairs, 1782-1968206
- Secretary of State for India, United Kingdom, 1858-1935201
- Adviser to the Government of Bahrain, 1926-1957187
- Emir of Kuwait, 1718-187
- Political Agent, Bahrain, 1905-1971186
- King of Bahrain, 1783-167
- Native Agent, Trucial Coast, Sharjah, c 1823-1949162
- Bahrain Petroleum Company, 1929-156