If You Walk Into Your Classroom and See This [Pic]

Monial, the "Battle of Britain" was an extended bombing campaign against Great Britain by the Luftwaffe. The fighter pilots who defended Great Britain were drawn from the RAF, and the United States AAF. The few Polish pilots who participated flew CAP against Bomber formations picked up by radar and engaged them WELL off the British coast.

Yes, many Britons died during the Battle of Britain, however, now it seems that you're implying that your grandfather was either amongst the support personnel (which isn`t true... no Polish nationals were used for ground defense on the British Isles... the Home Office verifies this if you`d care to look it up.) or he was a pilot, which is doubtful, since you would have mentioned that in your original post in which you claimed he died "fighting in Britain"

Regardless... there was NO GROUND CAMPAIGN in the British Isles during WWII.