What played a large part in the British Victory in the Battle of Britain?

The Battle of Britain in World War II was between Britain's Royal Air Force (RAF) and the Luftwaffe, Nazi Germany's air force, and was the first battle in history fought solely in the

most of the knowledge we have of the conflict comes from roman-jewish scholar titus flavius josephus, who first fought in the revolt against the romans, but was then kept by future emperor vespasian as a slave and interpreter.

answer; i believe the two groups were irish immigrants and chinese immigrants;