Hipper:
I suspect but cannot prove that in 1940 that the direction of ULTRA decrypts were more towards naval and air intelligence. R V Jones wrote extensively in his book about the results of the Oslo Report, which revealed information about blind bombing and the JU 88. As we both know intelligence is piecing together small items to produce a picture, it's how commanders look at and interpret that picture, that is the problem. Montgomery and Arnham comes to mind, but I digress.
In effect the RAF fought a brave and successful battle, against a resourceful well trained opponent, and as always in war, you win by making less errors than your enemy, making you own luck and by being a student of Sun Tzu.
Brickhistory: a glass of good red raised in salute this evening along with a viewing of the Battle of Britain. BEagle, watch you blood pressure.