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1 (National). De facto national language. 55,600,000 in United Kingdom (ELDIA 2012). Population total all countries: 335,148,868. L2 users: 1,500,000 in United Kingdom (Crystal 2003). L2 users worldwide: 505,000,000.
2 (Provincial). De facto provincial language in Wales. 508,000 in United Kingdom (1991 census), decreasing. Population total all countries: 536,890. 32,700 monolinguals (1971 census).
3 (Wider communication)
3 (Wider communication).Widely used as L2 in all parts of Northern Ireland. 116,000 in United Kingdom (2001 census).
4 (Educational). Statutory provincial language in Scotland (2005, Gaelic Language (Scotland) Act). 58,700 in United Kingdom (2001 census). Population total all countries: 63,130.
British Sign Language
5 (Developing). 60,000 (2013 K. Crombie Smith). L2 users: 250,000 (2013 K. Crombie Smith).
5 (Developing). 4,100 in United Kingdom (2004).
5 (Developing). 90,000 in United Kingdom (1999 B. Kay). 60,000 in Lallans, 30,000 in Doric. Population total all countries: 100,000. L2 users: 1,500,000 in United Kingdom.
6a (Vigorous). 90,000 in United Kingdom (Hancock 1990). Population total all countries: 197,900.
6a (Vigorous). 4,000 in United Kingdom.
6b (Threatened). Of the 3 French dialects spoken on the Channel Islands, 2,870 speak Jèrriais on Jersey Island (for 110 people, it was their L1), 1,300 speak Dgernesiais (2001 census) and 20 speak Serquiais on Guernsey Island. L2 users: 12,000,000 in United Kingdom (ELDIA 2012).
9 (Reawakening). No known L1 speakers, but emerging L2 speakers. Ethnic population: 532,000 (2011 census). L2 users: A few L2 speakers in Canada, Australia, Austria, and Brittany (France).
9 (Second language only)
9 (Second language only). No known L1 speakers.