Unmanned aircraft, or drones, are playing an increasingly important role in military campaigns around the world.

Though they are controversial and often blamed for the deaths of civilians, the British military also wants to show people that they save lives too.

The UK says 459 missiles have been fired from its unmanned Reaper aircraft in Afghanistan, with only four civilians recorded killed.

Al Jazeera's Rory Challands reports from the Royal Airforce's drone headquarters in Waddington.