Designing and organising large numbers of autonomic resources into a coherent system is a difficult tendeavour. It necessitates handling complex interactions among dynamic, heterogeneous components, autonomic managers and human policies. Several architectural models have been proposed for organising these interactions. This paper focuses on a decentralised approach, while also considering two other possibilities – centralised and hierarchical. An architectural model is proposed and a prototype implementation with corresponding experimental results are subsequently presented and discussed.