I wouldn't consider the Polish and french pilots based in the UK as renagades as they were still fighting to protect their people from the last freely elected governments of their respective countries.
You need to remember that the govenments elected during the time of occupations didn't represent the wishes of peoples of those countries. They were infact puppet goverments intended to legitimise the occupation of the Nazi forces, and in most cases recieved their just deserts after the war.
I think the term renagade was put in there to represent the LW pilots who think they know beeter than their own high command and will disregard orders about sticking with the bombers and run off to the closest furball.
This will make the RAF Job easier as stopping the bombers are the main objective of the RAF.
How many RAF pilots are going to become renagades by finishing a mission with a quick flyby to see the 109's with empty fuel tanks floating in the Channel!
Cheers!