About 5.3 million people in England and Wales (about 10% of the population aged 10 or over) have their DNA stored on the National DNA Database, one of the largest DNA databases in the world. Police routinely collect DNA from arrested suspects, and it can be stored (often permanently) if they are convicted of almost any offence.
Data source: Home Office, 2019
The estimated proportion of people on the National DNA Database attempts to take account of the presence of duplicate records on the database by reducing the number of samples in each category by 14.1%, the estimated proportion of records that are duplicates. See the data source for more information.
Since the National DNA Database does not have an equivalent ethnicity category to the ‘Mixed/multiple ethnic group’ categories in population data, people in these groups have been categorised on this chart as being of Black, Asian or other ethnicity.