'British Mainland' (Never: English Mainland) has been in use since ages among cartographers as a name for the largest island in that group of islands west of the European mainland (I hasten to add that the use of 'mainland' for Europe doesn't imply any possession of these isles by any part of Europe). The name for this island before that was 'Great Britain' since the times of the Romans ('Britannia major'), but this name was not considered a good name for there were too many confusions with the political entity 'Great Britain' which consisted of many more islands.

I'm curious: What is the PC name for that island (Britannia major) from the point of view of a North of Ireland nationalist.

By the way: The Isle of Man is not a part of the UK and to say that this island 'belongs' to Britain is considered an insult by some people from there.

Wolfgang