British Overseas Airways Corporation was created on 1939-11-24.
British Airways was created in 1974 after the merger of two previous companies - The British Overseas Airways Corporation (BOAC - founded 1939) and British European Airways (BEA - founded 1946).However, BOAC was in turn created when a number of airline companies (including a privately owned British Airways Ltd, founded in 1935) were nationalised following a governmental review.
Misr Overseas Airways was created in 1981.
Overseas National Airways was created in 1950.
National Airways Corporation was created in 1947.
British Airways owns 55% of the International Airlines Group after merging with Iberia. The remaining 45% belongs to Iberai's shareholders. You can get more information about this at the Wikipedia. Once on the website, type "British Airways" into the search field at the top of the page and press enter to bring up the information.
West African Airways Corporation was created in 1946.
Overseas Private Investment Corporation was created in 1971.
British Airways Helicopters was created in 1964.
British Airways Ltd. was created in 1935.
British Mediterranean Airways was created in 1994.
British United Airways was created in 1960.
British Airways Maintenance Cardiff was created in 1993.