P.S. For our non-UK cousins, Croydon Airport was London's main international version during the 1930s, and later. All that exists now is the original combined terminal and control tower building. It's also very much the flavour of Art Deco.
See
http://en.wikipedia.org/wiki/Croydon_Airport
Croydon Airport opened on 29 March 1920, way earlier than Heathrow Airport.
When wheat and fruit on Heathrow grew,
from Croydon men through Europe flew.