See how it says: (dated, sometimes proscribed) We avoid doing this (only a few silly old men and bigots do it, as a dog whistle in national politics). You sho

See how it says: (dated, sometimes proscribed) We avoid doing this (only a few silly old men and bigots do it, as a dog whistle in national politics). You should not do this. It is not, in any sense, the "ordinary name" of the UK. It was pure chauvinism even when it was in common use. Don't do it; it will inevitably and correctly annoy people. ETA: Even "Britain" and "British" are pretty complex. "Britain" is not really a place in any meaningful or legal sense. The islands are "the British Isles" but only cartographers and mariners really say that (because Ireland is one of them). Great Britain is an island. No identifiable map region is called Britain. "British" is a citizenship and a passport; whether people say they are British is increasingly a personal decision and people have a really wide variety of reasons for their choice. Safer to say "The UK" when you mean it, and England, Scotland, Wales, Northern Ireland only when you specifically mean those. Anything else is quite likely to get your drink spilled over you.