Would be a nice thought, but literally nobody means the descendants of the Britons where talking about being British.
If they did, depending upon what that encompasses, then either large swathes of Scotland would be included (Glasgow is a Brythonic name!), or you'd be excluding England from the discussion.
Largely without fail, someone talking about Britain is talking of the island itself, or the current inhabitants.
I had no idea there was such a massive diaspora going on.
reply