The Celtic language formerly spoken in Cornwall, in southwestern England, Cornish is extinct as a first language but is being revived to some extent as a second language.
The Celtic language of the Isle of Man, Manx is spoken today as a minority second language.
Scottish Gaelic, or Gàidhlig, is a Celtic language, closely related to Irish Gaelic, that continues to be spoken in Scotland, primarily in the western Highlands and the Hebrides.
Scots, also known as Lallans or Doric, is a Germanic language closely related to English and considered by some scholars to be essentially a Scottish dialect of English. It is primarily spoken in the Scottish Lowlands, Caithness (northeastern Scotland), Orkney, and Shetland.
Ulster Scots, in Northern Ireland, is a closely related variant.
Welsh, or Cymraeg, a Celtic language related to Breton, is designated as an official language in Wales. All official publications and signage in Wales are bilingual in Welsh and English. Although spoken only by a minority of the population, it continues to be the preferred language of many in northern and western Wales.