You do know Scotland is in Britain, right? I'm not a nationalist, so I don't go around saying I'm English. Biffy are a British band, just like BMTH are a British band. Do you ever see people call BMTH English? No.
I checked your profile to see if you were a Scottish Nationalist, which would make your correction somewhat understandable, but you're American. Please tell me that you don't know so little about the world, that you didn't know that Scotland is in Britain. I know that a lot of Americans are ignorant to the rest of the world, but sometimes you still manage to shock me.