The air on Folie Street in central London was thick with plumes of pink and turquoise smoke last week as anti-prison protesters armed with flares stormed the offices of Kier Group, one of the country’s largest construction contractors. Carrying signs declaring “Kier profit from prisons” and “Ministry of Torture”, the activists from Community Action on Prison Expansion were there to harangue the company over its recently-signed £253m contract to build a new prison in Northamptonshire
