You asked

For the last three financial years, including this year (up to the most recent data you have), how many people in the UK are living with diagnosed dementia?

We said

Thank you for your enquiry.

We are responsible for publishing mortality data for England and Wales.

Unfortunately we do not hold information on how many people in the UK are living with diagnosed dementia. However, some information on dementia prevalence in England is available from Public Health England: https://www.gov.uk/government/publications/dementia-profile-march-2018-data-update/statistical-commentary-dementia-profile-march-2018-update

Some dementia statistics are also available from the Dementia statistics hub produced by Alzheimers research UK: https://www.dementiastatistics.org/statistics-about-dementia/prevalence/

Special extracts and tabulations of deaths data for England and Wales are available (subject to legal frameworks, disclosure control, resources and agreement of costs, where appropriate). You can contact the team directly at: vsob@ons.gov.uk