London Airport
In 1920, two airfields created during the First World War to serve aerial defenses against German zeppelin raids were combined to create London's first international airport, Croydon Airport, also known simply as London Airport. This would serve as London's sole international airport until the post-World War 2 era. From London Airport, Britain's first transcontinental airline, Imperial Airways, based its Empire-wide flight network. This began in 1925 with flights to Cairo and Karachi via Paris. From 1932, regular flights were established from London to far-flung corners of the British Empire like Singapore, Hong Kong, Khartoum, Kenya and Cape Town.