DNA: Databases

Home Department written question – answered on 3rd March 2011.

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Photo of Andrew Percy Andrew Percy Conservative, Brigg and Goole

To ask the Secretary of State for the Home Department how many samples have been added to the DNA database in each police authority area in the last five years; and how many of those samples were for people who were not subsequently convicted of a criminal offence.

Photo of James Brokenshire James Brokenshire Parliamentary Under-Secretary (Home Office)

holding answer 28 February 2011

DNA samples are not in themselves added to the National DNA Database (NDNAD), they are analysed and converted into a DNA profile which is then added to the NDNAD. The following table shows the number of subject DNA profiles held on the NDNAD by each of the police forces in England and Wales as at 31 December 2010.

These data are based on a snapshot of the NDNAD as at 31 December 2010. The data are management information and have not been formally assessed for compliance with the Code of Practice for Official Statistics.

The most recent figures available for England and Wales show that at 31 March 2010 there were an estimated 4,946,613 persons on the NDNAD, of whom 22 % (an estimated 1,083,207 persons) did not have a current conviction, caution, formal warning or reprimand recorded on PNC. A breakdown by force is not available.

Breakdown of the subject sample profiles on the NDNAD by police force from the creation of the NDNAD to 31 December 2010
Police force Number of subject profiles on NDNAD
Avon and Somerset 137,560
Bedfordshire 61,817
British Transport police 60,843
Cambridgeshire 69,167
Cheshire 100,456
City of London 27,618
Cleveland 66,113
Cumbria 57,868
Derbyshire 108,978
Devon and Cornwall 140,042
Dorset 63,395
Durham 64,465
Dyfed-Powys 60,483
Essex 163,285
Gloucestershire 58,265
Greater Manchester police 309,393
Gwent 65,363
Hampshire 183,722
Hertfordshire 95,108
Humberside 103,277
Kent 176,460
Lancashire 183,196
Leicestershire 83,343
Lincolnshire 63,120
Merseyside 197,553
Metropolitan police 1,041,896
Norfolk 79,540
Northamptonshire 56,917
Northumbria 205,177
North Wales 73,799
North Yorkshire 71,235
Nottinghamshire 127,994
South Wales 144,039
South Yorkshire 146,952
Staffordshire 129,833
Suffolk 61,555
Surrey 75,388
Sussex 141,431
Thames Valley 196,665
Warwickshire 41,100
West Mercia 96,779
West Midlands 354,847
West Yorkshire 263,862
Wiltshire 64,534
Total 6,074,433

The figures provided are for the number of subject profiles retained; this is not the same as the number of people retained.

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