28 March 2012
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UK: How accurate
is the National DNA Database (NDNAD)?
This begs the question: How accurate are the remaining
86.3% where there is only one DNA profile held? How many of the
profiles are linked to the person's correct name?
Mike Penning: To ask the Secretary of State for the Home Department how many individual records were added to the national DNA database under section 10 of the Criminal Justice Act 2003, in each year since 2003. [146965]
Mr. McNulty: Section 10 of the Criminal Justice Act 2003 amended the Police and Criminal Evidence Act to extend the power to take and retain DNA samples to all those arrested for a recordable offence. This legislation came into effect on 1 April 2004.
The number of profiles added to the National DNA Database for each year since 1 April 2004 under this power (including those who were later charged or convicted) is as follows:
Number
2004-05: 468,177
2005-06: 607,940
2006-07: 661,433
It is currently estimated that 13.7 per cent. of profiles held
on the NDNAD are replicates, i.e. that a profile for a person
has been loaded on more than one occasion (one reason for this
is that the person gave different names, or different versions
of their name, on separate arrests). Thus these profiles refer
to the following estimated numbers of individuals:
Number
2004-05: 404,037
2005-06: 524,652
2006-07: 570,817
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