Edited footage filmed by cameramen from the Chemical Defence Experimental Establishment at Porton Down in Wiltshire, featuring a demonstration organised by the anti-war group Committee of 100, in protest at the development of chemical weapons at the site.
Group of demonstrators walking across Porton Range. Troops arresting demonstrators prior to removal in transport. Further groups of demonstrators walking across range. Various assemblies of demonstrators and troop actions. Groups in Black Barn Road. Civilian police moving demonstrators. Demonstrators moving across leased land by MRE. Demonstrators at Weeks Barn Gate on A30. Group on railway embankment near Hampshire Gap. Group of army, police, and demonstrators at entrance to establishments on Porton - Pheasant Road.