UK drones flown over Afghanistan
27 April 2013 Last updated at 18:35 BST
Hundreds of anti-war campaigners have gathered outside a military base in Lincolnshire where RAF pilots have started operating remote-controlled drone aircraft over Afghanistan.
The MoD confirmed this week that control of armed intelligence and surveillance flights had moved there from a US facility in Nevada.
The BBC's Defence Correspondent, Caroline Wyatt reports.