Do Wales Scotland and Northern Ireland have their own languages?

Wales has its own language which is Welsh, which is still the mother tongue in some areas of Wales.
Scotland has its own language which is Scots Gaelic, spoken as the mother tongue in the Highlands and Islands.
Although a percentage of both countries speak their own language almost everyone of the native peoples also speaks English.
Northern Ireland has now a growing ulster Scots community which have their own dialect very different from scotch Gaelic or Irish Gaelic.