Stephen has managed the Sheffield RNAi Screening Facility (SRSF) for over 12 years. The SRSF provides customers with resources to perform both RNAi and small molecule screens in Human and Drosophila cell lines. He has a PhD on co-suppression (RNAi in plants) from the University of Nottingham and then changed model organisms to work on developmental genetics in Drosophila. He spent 7 years doing Post-Doctoral research at the University of Cambridge before being awarded a MRC Career Development Fellowship, at the University of Manchester. He currently leads the MSc in Genomic Approaches in Drug Discovery course at Sheffield.