Thanks for the heads-up, rogerk. Sky+HD is set.
Not quite sure of what point you are trying to make with your thread title, though. Most people with an interest in the battle know that there were more Hurricanes than Spitfires and that the RAF employed a good proportion of SNCO pilots and other aircrew.
The courage and tenacity of the Poles is well documented (and immortalised by the Polish War Memorial outside RAF Northolt, from where 303 Sqn flew). Perhaps their score was much higher because they were already combat-hardened when they arrived in the UK and that they wanted to exact bloody revenge on Jerry for invading their homeland, whereas it was sufficient for the wider RAF to merely deter the Hun from his planned invasion in order to fulfill their mission.