The EPSRC, in partnership with GlaxoSmithKline, wishes to announce a call for proposals to support a portfolio of activity in the area of array chemistry. Up to £4 million is available in the budget for this call. This call addresses three areas of array chemistry. These are the development of reactions for arrays, the process used to design the components of an array and finally the interpretation of the resultant data from the array. The aim of the call is to increase the volume of research and training in these key areas and to provide opportunities for technology and knowledge transfer between academia and industry.