This thread has been helpful, thank you to all who contributed.
As an immigrant from to America from England, I have noticed that there are times we could be speaking different languages, and I do refer to the language spoken in America as American English, and the language spoken in England as English, but I don't find it offensive when Americans call it British English. It's awkward when we supposedly speak the same language, even though it's really not. You need a way to clarify, and surely no offense can be meant.
Regarding the name of the country/countries - it is the United Kingdom of Great Britain, which contains the countries England, Scotland, Wales and Northern Ireland, so people do sometimes refer to themselves as English rather than British. I do. It really isn't something to get bothered about though.
