The number of people recorded on practice disease registers with dementia in England is shown in the following table. The data are not available by age groups. Diagnosis for dementia in Wales, Scotland and Northern Ireland is a matter for the devolved Administrations. Prevalenceof dementia in England in 2010-11 to2012-13 Numberof patients on dementiaregister 2010-11 266,697 2011-12 293,738 2012-13 318,669 Source: Healthand Social Care InformationCentre