Looking back over the thread, it seems to me that most of us have not used the terms interchangeably, but have chosen the term that most accurately expresses what we want to say.

But I take your point, there is still a careless tendency for the English to assume that Britain and England are the same thing. I can't believe it when I hear BBC presenters speculate as to whether Charles will ever be "King of England". (Not without some drastic political changes, he won't.)

It might not seem that important to some, but on an international forum like this, it can only cause confusion among those of other nationalities if the English don't appear to realise that Scotland, Wales and Northern Ireland are British but not English. How can we expect other nations to understand this if the English still get it wrong?