This documentary argues it was primarily Dowding who saved Britain from defeat against Hitler in 1940, only to be ignominiously humiliated at the end of the conflict.
Defiant London a Timeline documentary
This short introduction to RAF fighter pilots was showed in cinemas in 1940
The 13 Hours that Saved Britain | Battle of Britain Day | Timeline
I found the eyewitness accounts of this final battle and the blitz on London by people who were children at the time of particular interest.
Nine American citizens are listed as pilots serving with the RAF during the Battle of Britain and some pretended to by Canadians in order to be eligible to join the RAF.
Several American pilots serving with RAF Fighter Command also supported the Canadians during the ill- fated raid on Dieppe.
After the United States entered the war the Eagle Squadrons were amalgamated into the USAAF and the pilots were allowed to wear RAF wings on their American uniforms.
An excellent talk by Dr. A Roberts at the US War College in 2012.