Unmanned drones launch: Next step pilotless planes?

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Britain and France will unveil the next generation of unmanned drones at next week's Farnborough Airshow.

So far the use of drones has been focussed on the military but there are questions over whether they may one day be flying in the UK.

Jonathan Beale has been given exclusive access to a programme that could open Britain's airspace for pilotless planes.

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