To fully realise this 6th Principle in practice and build the co-operative movement, co-operatives must co-operate with each other to support current and future movement- level leadership development. Leaders need vision to engage with other progressive civil movements in addressing broad social problems and increasing the visibility of co-operatives in a way that demonstrates how co-operatives can provide solutions to the problems society faces. Co-operatives need to co-operate with one another to develop co-operative movement-wide leadership; a precursor to realising wider economic, social and environmental transformation.