Name
- Committee of Imperial Defence, Imperial Communications Committee, 1919-1939[remove]2
- Admiralty, 1708-19641
- Cable and Wireless Ltd, 1929-19811
- Chief Commissioner, Aden, 1932-19371
- Civil Commissioner, Mesopotamia, 1917-19201
- Colonial Office, 1854-19661
- General Post Office, 1660-19691
- Indo-European Telegraph Company, 1868-19291
- Indo-European Telegraph Department, 1862-19311
- 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
- Viceroy and Governor-General of India in Council, 1773-19471