Name
- Political Residency, Aden, 1854-19324
- Government of Bombay, 1662-19473
- Chief Commissioner, Aden, 1932-19372
- Colonial Office, 1854-19662
- Admiralty, 1708-19641
- Board of Trade, 1786-19701
- Cable and Wireless Ltd, 1929-19811
- Committee of Imperial Defence, Imperial Communications Committee, 1919-19391
- Department of Overseas Trade, 1918-19531
- Eastern Telegraph Company, 1872-19291
- Foreign Office, 1782-19681
- Government of Bombay, Military Department, 1809-18951
- Government of India, Commerce Department, 1872-19471
- Government of India, Military Department, 1834-c 19061
- International Telecommunication Union, 1865-1
- Lambert Brothers Ltd, 1845-1
- Legal Adviser and Solicitor to the Secretary of State for India, 1874-19471
- Perim Coal Company Ltd, Late 19th century - Mid 20th century1
- Permanent Under-Secretary of State for War, 1854-19471
- Political Resident, Aden, 1854-19321