I thought there was already a way of intercepting these drones. I'm sure I've seen something on 'Click' or a similar programme that can be implemented to block the operating signals to make the drones in effect fall to the ground.
Failing that a sharpshooter with a high powered rifle would solve the problem within seconds. I realise there would be H&S issues with stray bullets but if a good shooter can take the Bllcks off a fly at ½ mile I'm sure a Drone would be no problem.
Seems that the opinion now according to BBC is that its a deliberate attempt to cause mayhem at the airport.