The term "British Isles" generally refers to a group of islands that include Great Britain, Ireland, and over 6,000 smaller islands. Specifically, it encompasses England, Scotland, Wales, Northern Ireland, and the Republic of Ireland.
Out of the options you provided, the area that is not considered part of the British Isles is Ireland. However, it's worth noting that while the island of Ireland is included in the British Isles, the Republic of Ireland as a sovereign nation is often distinguished from the UK component of the British Isles.
If the intent is to specify the Republic of Ireland as separate from the UK context, that could be the answer, but otherwise, all listed areas are part of the British Isles.
For clarity:
- Northern Ireland is part of the UK and the British Isles.
- North Wales is part of the UK and the British Isles.
- Ireland (if referring to the Republic of Ireland) is a separate sovereign nation but located on the island of Ireland, which is part of the British Isles.
- South Wales is also part of the UK and the British Isles.
Please clarify if you meant something else regarding "not considered part."