An overview of the Olympia Aero Show 1913 (London). Presumably a series of overview shots were made and this one fall off. Another one was placed, giving more of a view of the Royal Aero Club Model Section.
To be seen from left to right are a Caudron Tractor Biplane (G.3), the unique Porter Helicoptere and the Breguet Biplane.
for a description of the fourth machine of Robertson Porter, the Gyroparachute (powered by a 50 hp Gnôme)