Great 13 part series on the air war in WWII on "discovery wings"

[NedLynch]

If you go on youtube and do a search for Battle of Britain Documentary you will find many great videos, including a history channel doc.
Also there is a doc streaming on netflix, same thing, just search for Battle of Britain, this doc gives a some surprising things about the battle, including if the Luftwaffe could have sustained the battle for much longer and if the bombing of London was a mistake or not.