Hore Belisha watches new antiaircraft gun demonstration on Horseguards Parade.
Title reads: "Antiaircraft guns - demonstration in Whitehall".
Various shots of soldiers from Territorial Unit demonstrating new type of antiaircraft gun on Horseguards Parade. The new artillery is fitted with device to make it swing around at speed - useful for shooting down aeroplanes. A crowd watches the demonstration, including Cabinet Minister and War Secretary, Leslie Hore Belisha (Hore-Belisha) and senior British Army Officers. Mr B. makes a speech to the camera standing in front of the gun. He explains this is one of the weapons to make Britain secure against aerial attack - it will be manned by Territorial Army.