The number and proportion of recorded crimes of each type detected in which a DNA match was available in 2008-09 is shown in Table 1. The figures held do not include crimes detected as a result of one-off speculative searches of the NDNAD or from comparing DNA profiles in a forensic laboratory. One-off speculative searches and DNA profile comparisons are used mainly in the investigation of serious crimes such as murder and rape. Therefore the figures provided in Table 1 will under-represent the overall contribution of DNA matches to the detection of serious crimes such as murder and rape.
It is important to note that detections are achieved through integrated criminal investigation, not through DNA alone. The source of the figures provided is the forensic performance data, which are collected from police forces by the Home Office.
Table 1 shows:
the number and types of crimes detected for which a DNA match was available. additional detections, where an offender admits further offences following a detection for which a DNA match was available. the total of these two types of detections (labelled 'DNA-related') as a proportion of recorded crime and as a proportion of sanction detections (the sanction detection rate in 2008-09 for total recorded crime was 28 per cent.).
The table shows that 17 per cent. of all detected domestic burglaries, 20 per cent. of all detected other burglaries (burglaries other than a dwelling e.g. commercial premises, garden sheds, etc.) and 10 per cent. of all detected thefts of vehicle were 'DNA-related'.
It should also be noted that most recorded crimes do not have any forensic opportunities (for example, minor assault, drugs offences, theft, fraud etc.). In 2008-09, only a small proportion of recorded crimes had a crime scene examination (17 per cent.); and only 39,795 crimes yielded DNA crime scene samples of sufficient quantity and quality for profiling and loading to the NDNAD.
The data provided are management information and have not been formally assessed for compliance with the Code of Practice for Official Statistics.
|DNA-related detections 2008-09|
|Police forensic data-crime categories||Detections of crimes in which a DNA match was available ('DNA detections')||Additional detections arising from the DNA match||Total DNA-related detections ('DNA detections' and additional detections)||Recorded crime 2008-09||Total force detections 2008-09||Total DNA-related detections as proportion of recorded crime (percentage)||Total DNA-related detections as proportion of total force detections (percentage)|
|All other recorded crime||1,506||1,616||3,122||1,315,079||368,595||0.2||0.8|
|Other sex offences||106||34||140||38,355||12,760||0.4||1.1|
|Other violent offences||861||168||1,029||892,745||422,224||0.1||0.2|
|Theft from vehicle||2,036||3,655||5,691||444,647||42,642||1.3||13.3|
|Theft of vehicle||1,298||1,165||2,463||147,470||24,471||1.7||10.1|
|Total of 12 crime types||17,607||14,602||32,209||4,703,814||1,335,777||0.68||2.41|
|(1) The forensic data "homicide" crime category covers the following recorded crime categories: |
Murder, Manslaughter, Infanticide-648
Intentional destruction of viable unborn child-8
Threat or conspiracy to murder-9,559
Causing death by aggravated vehicle taking etc.-31
Causing death by dangerous, careless or inconsiderate driving-427
Total 'Homicide' crimes in 2008-09-11,248
1. A 'DNA detection' means that the crime was cleared up and a DNA match was available.
2. 'Additional detections arising from the DNA match' occur when, for example, a suspect, on being presented with DNA evidence linking him to one offence, confesses to further offences. They arise from a crime with a DNA match; and are therefore detections where a DNA match played a part in solving the crime.
3. Total 'DNA-related detections' means 'DNA detections' plus 'additional detections arising from the DNA match'.