Air attack exercise is staged to test London air defences.
Full title reads: "LONDON ATTACKED - R.A.F. Bombing Planes test Metropolitan defences."
A group of pilots in their flying gear at the airfield. Formation of planes taking off. Several shots of the planes in flight. Three men operating a large piece of air defence equipment which recognises sound and determines position of planes - looks like hue microphones. Men run to antiaircraft gun and turn it towards the sound. Several shots of the planes in flight and men on ground operating equipment and antiaircraft guns.
Note: The information below were found in the old records but not in the paperwork. It is unclear whether either is correct.
Air attack exercises. Flight from Upper Heyford over Coventry.
Air Defence Exercise at Kenley.