Domestic CCTV can be installed for as little as £50, so it's potentially a cheap way of improving security at your home. You can spend thousands on a top-of-the range system, and this could pay dividends if you ever need to use to footage to identify a criminal suspect. It's worth making sure the camera is high enough quality, and a good CCTV installer should be able to advise you on the best place to install cameras.
Your system can be wired or wireless, depending on your budget. Wired cameras are cheaper but wireless ones can be more convenient - although an interrupted internet connection can mean lost footage. You can store images on a hard drive or separate digital recorder.
As well as the obvious benefits for your peace of mind, and the help it provides when catching criminals, the security systems can deter potential burglars, keeping your insurance premiums down.
CCTV captured this failed ATM theft in Australia (Photo: ITN)
Will it stop crime?
The jury is still out on the actual effectiveness of CCTV in public spaces, but it seems to have, so a visible camera may stop your house being specifically targeted. Research has also showed that it helps police identify and catch offenders, so it could help catch whoever is behind a series of crimes, such as vandalism or anti-social behaviour.
Police advice says that for private households, better lighting, alarm systems or locksthan a CCTV system. You can also get arguably the same deterrent effect with a dummy CCTV camera - but experienced thieves may not be fooled.
Dr Dean Wilson, Associate Professor in Criminology and Criminal Justice Studies at the University of Plymouth, says that home CCTV might prove to be worth it in cases like Lucie's. "If they've got their own CCTV outside their house capturing their little girl being knocked down, then that seems a good piece of evidence, " he says.
Sir Bernard extolled the virtues of private CCTV because they can help the police solve crimes like burglary or robbery. You might think they could also be useful to catch things happening outside your home, such as antisocial behaviour, or traffic incidents like Lucie's hit-and-run. But many people don't realise that you now have to be very careful about what you film and where your cameras are pointing.
Why private CCTV could be breaking the law
Pointing a security camera at the pavement, road, or neighbour's property or harassment law. In December an EU ruling said that private homeowners filming outside their own property are no longer covered by exemptions to the Act - which means filming the pavement or road could get you into serious trouble.
Following Sir Bernard's advice might even cause a problem, as an eye-level camera could be more likely to be filming things outside the edge of your property.
Sir Bernard Hogan-Howe said more households should install CCTV (Photo: Justin Tallis)
An ICO spokesman said that the new guidance means people have to be careful about where they film. “Operators must operate within the law, for instance by making sure that their use and the siting of cameras is well justified, that the information they are collecting is not excessive, that it is only kept until it is no longer required and that it is kept secure.”
If you're careful, it's still possible to install such a camera, but it's best to for advice first. If you break the rules, you could get embroiled in proceedings which could end in a contempt of court charge - a serious offence which could put you in prison.
It's also worth noting that the ICO have never yet prosecuted anyone for contempt of court under data protection law. But there's a chance that the laws surrounding home CCTV could be tightened. Last December surveillance camera commissioner Tony Porter said to government amid increasing concerns about domestic CCTV.
And what about privacy?
Privacy expert Kate McMullan, associate at law firm Hogan Lovells, says its still unclear what the implications might be for ordinary people. "You have to be very careful about how you process and store the footage you record. In particular, you must let people know that you are using CCTV, for example by putting a sign up, and not use CCTV in areas where people would normally expect privacy. We're still not sure how the new rules are going to impact on homeowners in practice, and how strongly this ruling will be enforced."
If your camera is pointed directly at a neighbour's property they could also complain that you're compromising their privacy under the Human Rights Act. If they do, and you can't resolve it yourselves, it could become a police matter. The ICO say that the majority of complaints they receive are where there is a If you live in a rented house or flat, you also need to ask your landlord before you install anything.
The ICO says you should still consider whether CCTV is wholly necessary, and says you should consider whether extra lighting, alarms or locks can solve your security concerns. Make sure you're not recording audio, as this is very intrusive. And there are also tight restrictions on publishing the footage you collect online.
CCTV is used in many private housing complexes (Photo: PA)
There are ethical considerations, too. Dr Wilson says that domestic CCTV raises questions about privacy in homes. "In blocks of flats there are push buttons where you can see the person, it's everywhere in Canary Wharf, so it's relatively common, " he says. But people might be particularly uncomfortable about CCTV on private houses. "It's an obvious way in which people realise that our homes are not a safe little cocoon all the time, and there might actually be people looking into there."
A Big Brother world
So home CCTV can be useful - but make sure you know the rules before you set it up. Don't film beyond the boundaries of your property unless you have a very good reason, prioritise basic security like locks and lighting, and definitely don't film other people's homes.