WWII - England, Fighter Planes & British Anti-Aircraft Defense

WWII - England, Fighter Planes & British Anti-Aircraft Defense German plane on display in downtown London(?). Young girl collecting money. Fighter aircraft over & anti-aircraft firing. Plane crashes into field (not seen). Other planes diving. Barrage balloon hit & burns. Soldiers run w/ rifles to defense position at airfield. Pilots taking off in fighters (Hurricanes ?). German planes. Contrails. Barrage balloon up. Captured German pilot marched by soldiers. Reloading plane guns. German planes over. Cameraman in middle of sandbagged position picks up shrapnel. Fighters return; Polish airman talks to British. Battle of Britain; Blitz; WW2;