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In theory, their advantages are clear. They are cheaper and quieter than conventional helicopters, can circle their target for hours without refuelling - and they don't get bored on long surveillance missions. However, their use is likely to further fuel concerns about our march towards a Big Brother state. Britain already has more CCTV cameras than the rest of Europe put together.
More than four million closed-circuit TV cameras cover the streets; cars are monitored using cameras that check registration plates and a new law will see footage taken of shoppers buying alcohol.
The plan to deploy 'spy in the sky' planes is outlined in the Home Office's latest Science and Innovation Strategy. It says: 'Unmanned Aerial Vehicles are likely to be an increasingly useful tool for police in the future, potentially reducing the number of dangerous situations the police may have to enter and also providing evidence for prosecutions and support police operations in "real time".' (Source: Daily Mail)