Charles attended the University of Nairobi in Kenya and graduated with a degree in Pharmacy in 2005. Thereafter he worked as a Pharmacist in the Ministry of Health and gained his pharmacist's professional registration.
He was awarded a Wellcome Trust Masters Fellowship in 2009 to study Medical Statistics at the London School of Hygiene and Tropical Medicine. At the end of these studies in 2010 he went back to Nairobi to continue with his research. He returned to the LSHTM in 2011 to work towards a PhD in Medical Statistics which he was awarded at the end of 2014.
Charles joined the NPEU in January 2015 as a Researcher in Statistics and Epidemiology. He is currently working with the Policy Research Unit in Maternal Health and Care on a project looking at the impact of fathers on child development, and a project exploring the role of social deprivation in explaining variations in health outcomes in infants.
His other research is at the London School of Hygiene and Tropical Medicine where he's involved in the design and analysis of a portfolio of trials in the Medical Statistics Department's Clinical Trials Unit.