The emergence of co-production as a credible approach to commissioning and delivering care has been a welcome shift in the way we approach the design and delivery of our public services. But how seriously has it been taken in practice?

Lambeth's mental health care system has, for the past five years, been doing just that – taking co-production seriously by building a shared vision for radical change in the commissioning and delivery of services in the borough. But what do we mean by radical change?