How drones are transforming agriculture
29 August 2012 Last updated at 19:08 BST
Large unmanned drones could be flying in British skies by the end of the decade, the UK's airspace regulator has told Newsnight.
Small wing-shaped drones are already being used to photograph and analyse agricultural land, as Newsnight's Jim Reed has been finding out.
Watch the full report on the future uses of unmanned aircraft on Newsnight on Thursday 30 August 2012 at 10.30pm on BBC Two, then afterwards on the BBC iPlayer and Newsnight website.