Condensation trails from German bombers and fighters and the RAF fighters which have apparently "jumped" them over the English Channel, 3 September, 1940.  This is an official photo, apparently taken from a high-flying RAF aircraft.  Best regards, JR.

The problem with a low-level approach ?

British heavy anti-aircraft position opens fire on German night raiders, London, 20 September 1940.  In these early days, when British night-fighter capacity was little more than a shadow, London and other cities were heavily dependent on batteries such as this for defence.  Such batteries were crewed, for the most part, by second-line troops, Home Guards, and levies of young women.  Best regards, JR.

Ships in the Port of London illuminated by German bombing early in the Blitz, 7 September, 1040.  Best regards, JR.