BOAC
Stephen Bungay impressed me no end with his research. I will make a point of getting a copy of his 2001 book on the history of the Battle of Britain I think
I was initially pointed towards his book (The Most Dangerous Enemy) because somebody thought it was yet another 'rubbish the RAF' volume saying the Battle was nowhere near as tricky or close-run as legend had it.
The book turned out to be nothing of the sort though it does put paid to some myths. It is without a doubt the finest single volume I've ever read on the Battle with amazingly broad research. Very occasionally it gets a bit dry but is generally far from it, with lots of variety to keep even a casual reader interested.
Highly recommended!