English, in various dialects, is the most widely spoken language of the United Kingdom, but a number of regional languages are also spoken. These are Scots and Ulster Scots and the Celtic languages, Irish, Scottish Gaelic, Welsh and, as a revived language with few speakers, Cornish. British Sign Language is also used. There are also many languages spoken by immigrants who arrived recently to the United Kingdom, mainly within inner city areas; these languages are mainly from continental Europe and South Asia.