Data on whether persons with a profile on the national DNA database have been charged or cautioned for an offence is not held on the NDNAD, but is held on the police national computer. However, the data requested is not currently available routinely from the PNC.
The last available data on this issue was provided in the reply given by my hon. Friend, the then Parliamentary Under-Secretary of State for the Home Department (Andy Burnham), on 31 January 2006, Official Report, column 367. It was obtained from data extracted from the PNC for monitoring and research purposes.
Updated information could be obtained only at disproportionate cost by cross-searching approximately 3 million records retained for such persons on the PNC.
[holding answer 19 December 2006]: The most recent figures available are the result of research carried out in January 2006 that indicates that: 37 murders/manslaughters, 16 attempted murders and 90 rapes have so far been linked to people who had DNA samples taken on arrest but who were subsequently not proceeded against for the arresting offence.
The figures are not collated as a matter of course and no further research has taken place as this would be a major project taking approximately two months.
In 2004-05, 521,117 subject sample profiles were added to the national DNA database. In addition, 59,048 crime scene sample profiles from unsolved crime scenes were added to the Database.
In 2005-06, 715,239 subject sample profiles and 68,774 crime stain profiles were added to the NDNAD.
I refer the right hon. Member to the reply given to the hon. Member for Preseli Pembrokeshire (Mr. Crabb) on 9 October 2006, Official Report, column 491 and the reply given by my right hon. Friend the Secretary of State, Home Department to the right hon. Member for Haltemprice and Howden (David Davis) on 13 December 2006, Official Report, column 1108.