The Local Government (Gaelic Names) (Scotland) Act 1997 enables local councils in Scotland to rename the areas for which they are responsible with Gaelic names. It enables them also to revert to names in English. The act was passed by the Parliament of the United Kingdom.
The only council to date (2024) that has taken up the new right is Comhairle nan Eilean Siar (formerly Western Isles Council), meaning that the former Western Isles are now officially named Na h-Eileanan Siar, even in English-language contexts.