To answer a few of the points above.
Yes it does happen in Egland, but in general the Scots affected get on with their lives as the English media is not going to give then the time of day. I know one person who was forced out of his house by his freindly English neigbhors, and have seen the underlying anti Scots notions in England for most of my adult life, from press comments in England about where the nuclear boats should be based back in the 60s to comments about getting water for the South East just a few weeks ago.
Yes we remeber the battles of the past, including the one we lost, and when I was a lot younger many in England did to, but they seem to teach even less history down there now than we do.
Yes there wer many protestant Scots in Cumberlands army, but the event is not remebered so much for the defeat as the treatment of the survivors specifically ordered by the butcher. It is also significant as it marks the end of the old highland way of life, so should be remebered for that as much as anything else.
Personally I suspect a loft of the aggro at the moment is down to the Labour party losing popularity on both sides of the border at the moment, and a lot of statements coming out from various people in that organisation pandering to the very real sectarian groups within their own organisations.
Peter