I may have confused the issue with a couple of misleading points in my earlier post.   In fact, of course, Edward I of England did have partial jurisdiction in Scotland for a while; the whole story is extremely complicated, and nobody comes out of it looking very good.  Chapter 3 of John Prebble's The Lion In The North covers it well for anyone who doesn't already know the details.  I assume, too, that I was wrong to think that the bagpipe line came from Rob Roy rather than Braveheart; sorry, Liz, for seeming to doubt your memory!  I was perhaps crediting the screenwriters with more knowledge than they actually possessed.  In Wallace's time, various forms of bagpipe (all mouth-blown; bellows were not used until much later) were played throughout both Scotland and England, so it wouldn't have been seen as a nationalist issue from either side; that bit was presumably just put into the film for effect, or because of confusion with the myth of post-Culloden proscription.

Malcolm