Mike English is a UK trained paediatrician who has worked in Kenya for over 20 years supported by a series of Wellcome fellowships. His work often takes Child and Newborn Health as a focus but increasingly tackles health services or wider health systems issues. He works as part of the KEMRI-Wellcome Trust Research Programme (KWTRP) in collaboration in Kenya with the Ministry of Health and a wide set of national and international collaborators. His work focuses predominantly on improving care in African Hospitals. The work of his team spans: clinical epidemiology (including developing national, evidence-based guidelines for care of severely ill children and newborns, clinical trials and observational studies); implementation research (including cluster randomised trials and mixed methods research), and health systems research (qualitative studies of health worker and managers’ behaviour and rethinking the health workforce).