DNA and CCTV (Crime Prevention)

Mike Crockart Excerpts

Tuesday 6th July 2010 Westminster Hall

[Mike Crockart (Edinburgh West) (LD)]

I, too, congratulate the hon. Member for Shipley (Philip Davies) on securing this debate on an important subject. For me, the title of the debate is important because it specifies tackling crime by effectively dealing with either the prevention or detection of crime. In this way, it mimics the most basic aspects of my police training 20 years ago, where I was taught the function of a police officer, which is fourfold: to protect life and property; to preserve law and order; to prevent and detect crime; and to prosecute offenders. We judge the effectiveness of policing against those four aims, and, equally, as tools used as an aid to those aims, we should judge DNA and CCTV against them. We all agree that more rapists, muggers and murderers should be in prison, but we have to be clear about whether a DNA database or CCTV will achieve that.

DNA is undoubtedly an effective tool in detecting offenders. In 2008-09, DNA evidence helped to clear up 1,700 serious crimes. However, when looking at broad figures such as those, we should remember that in many cases the DNA evidence might not have been the only evidence or the decisive evidence. In my time in the police, I spent two years as a scenes of crime officer and attended many murder scenes, and murders are by far the best example. Most murders are committed in the heat of an argument by friends and family members, and, after the fact, no attempt is made to conceal the crime or to evade detection. DNA swabs would be taken as a matter of course and form part of the evidentiary process, but, in real terms, they would add very little.

We need to be careful about seeing DNA evidence as some sort of scientific knight in shining armour for serious crimes. It is still too expensive to be used in all but the most serious crimes, and fingerprints will still be left at many more crime scenes and are identified far more cheaply. Whether we have the correct legislative balance between DNA’s effectiveness in crime detection and an individual’s right to privacy is an important question. The European Court of Human Rights does not think we do. It described existing English and Welsh legislation as “blanket and indiscriminate”, but noted the consistency of the Scottish approach. The problem is the blurring of the line between innocence and guilt.

The national DNA database is the biggest DNA database in the world, with 5.6 million people on it, but 1 million of those have not convicted of any crime. Despite the growing database, its effectiveness is declining year on year. Its costs doubled between 2006-07 and 2008-09 to £4.2 million, but detections fell by a quarter, and we must examine why. It is because we are getting closer to the point at which the database captures our criminal fraternity. It is the law of diminishing returns; as we capture the criminal profiles of fewer and fewer new convicted criminals, we are instead trawling our way through more and more innocent suspects. The focus needs to change, and we must ensure that anyone convicted of a crime is on the database; they have forgone their right to privacy, but the innocent have not.

CCTV is a far more difficult subject. Many people like CCTV, because it makes them feel safe and secure, but it is a comfort blanket. Surely, something that costs the Government hundreds of millions of pounds should be judged on its effectiveness. There is nothing in police legislation, which mandates the police to deal with the fear of crime. The right hon. Member for Don Valley (Caroline Flint) mentioned a politician’s need to deal with fear of crime, which we must do, but if we mandated the police to deal with it, how would it be measured? How would we measure DNA and CCTV’s usefulness in dealing with it? In examining their effectiveness, we must ask, do they prevent crime? Some crime, in some areas, possibly, though whether it is prevention or displacement is arguable.

In city centres, where alcohol is involved in the commission of many crimes, as mentioned earlier, CCTV has little effect in crime prevention. Even in the examples of crime falling, the extra lighting, fencing and security guards, which come with many CCTV installations, might be the active element in preventing crime. Interestingly, the public believing that cameras are effective can have two adverse effects: first, people may become careless, having been given a false sense of security by the presence of cameras, which makes the commission of crime easier; and, secondly, people believe that someone is watching the footage in real time, which allows them to abrogate responsibility for becoming involved upon seeing a crime being committed. CCTV can work against creating the involved responsible society we need.

Do DNA and CCTV help to detect crime? Possibly, in some circumstances. It is important to be clear about the purpose for which a camera is introduced. If it is for number plate recognition in a car park, to detect stolen cars or cars with no tax, and that information is acted upon immediately, then it is effective. If it is city centre CCTV being watched in real time and acted upon, as in the example mentioned, then it can be effective. However, we should be clear that a tiny fraction of the 4.2 million CCTV cameras across the country fall into that category, and that is the issue. We have allowed the unrestrained proliferation of CCTV over the UK. We have reached the point where Shetland has more cameras than San Francisco, and Scotland, as a whole, has 10 times the number of cameras as Johannesburg, with a population of 4 million. In London, only one crime a year is solved for every 1,000 cameras. The hon. Member for Shipley mentioned the age of austerity as an argument for CCTV; I am sorry, but the numbers do not stack up. The time for regulation of CCTV is definitely here, not only to ensure that those systems that effectively help in the detection and prosecution of crime can continue, but to ensure that those systems that do not contribute to the fight are overhauled.