Cameras can be bought on their own, or as part of a whole security package. Costs range from around £20 for one wired camera with a night-vision range of five metres, to around £450 for a vandal-proof camera.

You will need to buy some equipment to accompany the camera, depending on what type you choose, such as connectors and a digital video recorder (DVR) to store and view the footage. You can also buy dummy cameras for around £10.

CCTV is just one line of defence against crime and works best when combined with other measures, such as door and window locks, gravel around your property, security lights and a burglar alarm.

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