Just thought I'd revisit this thread after last night's glorious draw.
;-)

I've read the comments with interest and, personally, I don't believe the song was intended to be anti English. At least, not towards the English people of today.

While Roy was undoubtably a supporter of Independence, he wasn't advocating going to war with England or wishing them any ill will.
While he wanted Scotland to rise, be strong, and a nation once again, I'm fairly sure he didn't mean that it should be at the expense or detriment or any other country.
In fact, the lyrics actually state "These days are passed now and in the past they *must* remain"..

If you listen to the original recording, you'll hear that it is actually a very reflective and thoughtful performance.

https://www.youtube.com/watch?v=XiyLuv3GSs4

While it's not my favourite song, I feel that it has been much maligned by some but also hijacked by others who have misinterpreted its original concept. For that reason, I'm not sure it is best suited as a Scottish anthem but it seems to be the "de facto" choice.