Census Classifications
For 2011, in England and Wales, the White British self-classification option included the subcategories of: White English, White Welsh, White Scottish and White Northern Irish. The 2011 questionnaire for Scotland the White British category was broken down into two different categories: White Scottish and Other White British. For Northern Ireland in 2011 the White British classification did not appear, the only choice being White.
The 2011 census for England, Wales and Scotland also included additional White ethnic classifications of White Irish, Gypsy or Irish Traveller and White Other. As indicated above none of these classifications were options in the Northern Ireland questionnaire, although Irish Traveller appears as a separate ethnic category. The term 'British' in White British means being of British ancestry rather than being a British citizen. Non-British and non-Irish respondents in Great Britain could choose White Other.
Read more about this topic: White British