They reckoned one of the advantages Bader had in combat was the fact he had lost his legs, rather like a modern G suit he was able to withstand greater G levels in combat than his adversaries as he had no pooling of blood issues in his lower extremities, hence he could withstand turns that would have others blacking out.
Just watched the repeat tonight and some bloke (didn't catch his name) who had written a book on the Battle of Britain helpfully explained that blackouts were caused by high
negative G in tight turns
Also did I hear Douglas Bader in one of the dramatised bits talking about 'planes'? Oh and they didn't wear queen's crown anodised badges in 1940.
Oh dear, I could go on but I'm starting to sound like a bit of an anorak here, but really, it was a pretty poor effort.
Edited to add, apart of course from the contributions from the pilots who were around at the time, including Bader's wingman - those were excellent