In its recent ‘Five Year Forward View’, the NHS set out a bold new vision for its future. In the face of ever growing pressure on services, the report argues the need for large-scale transformation and new models of care if we are to maintain a sustainable and universal health service.

What exactly are social movements, however, and what does it take to start one? How can innovative local ideas be scaled up? How can we measure whether this model really does make services more effective and efficient? In short, does it work?