Hundreds of peace campaigners have started marching from Lincoln to RAF Waddington, in protest of a new fleet of armed drones being based in the UK for the first time.
The RAF began remotely operating its Reaper unmanned aerial vehicles earlier this week from the airbase in Lincolnshire.
Previously operated from a United States Air Force base in Nevada, the aircraft are used to support coalition ground forces in Afghanistan.
Members of the Stop The War Coalition, CND, The Drone Campaign Network and War on Want are estimated to walk the four mile route in around two hours.
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A sunny but chilly start. Cloud increasing with a little rain affecting northern and western areas, especially over the Derbyshire hills.
After a mainly dry, and locally chilly start, cloud will thicken, with some patchy rain possible across northern counties.
Becoming generally dry overnight with clear spells. A sunny but chilly start tomorrow. Cloud increasing with a little rain for some.