The aim of the work reported here has been to give an overview of the support that the informal sector provides for learning and engagement with science. In addressing this goal, we have taken the view that engagement with science and the learning of science occur both within and without schools. What is of interest is not who provides the experience or where it is provided but the nature and diversity of opportunities for science learning and engagement that are offered in contemporary UK society. Thus in approaching the work we have taken a systems perspective and looked at informal