In seriousness though the British aren't really up themselves, unless they're Scottish or Welsh, unless talking about sports or alcohol, unless talking about the NHS viz. other health systems on Earth, or unless talking about what a good thing the Empire was for the world or British history in general. See, now, it was the Americans what killed the Injuns and we Brits were the ones who won World War II. I guess the Canadians and ANZACs helped a little maybe but they're just Brits with silly accents really.

So unless you're talking about Britain in relation to anything else, British people are pretty easygoing. Oh, and as long as they're not of the unfathomable opinion that Wales or Scotland is somehow a place of significance.