Abstract: The concept of using a molecular template to generate recognition sites for selective separations or reactions within a polymeric network is an exciting, challenging and far-reaching one. This review seeks to explain and define the concept and its components. It traces the early developments by the pioneers in the field and highlights the important advances made, or the key crossroads passed, in reaching the current state-of-the-art. The various types of templates and template binding which have been explored are reviewed and achievements in re-binding or recognition discussed. Finally, the practicalities of preparing polymer networks imprinted in this manner are dealt with and guidance given in what is currently achievable and what limitations still exist