Could drones replace fireworks in the UK?

The Winter Olympics in Pyeongchang came to a spectacular close on Sunday - but in addition to the usual fireworks finish, there was an added technique that prompted gasps from the audience. Organisers used an army of drones covered in LED lights to make patterns to illuminate the South Korean sky with illusions of the Olympic rings, patterns of Soohorang - the white tiger mascot - and figures of competitors. But could this technology spread across the globe and takeover from our more traditional whizz bang fireworks? The internet reaction to the drones was overwhelmingly positive. Give the drone pilots a gold medal!