A pharmacist by training, William has a MSc in Toxicology and a PhD in Pharmacokinetics and Metabolism. He has 25 years of experience in Pharmaceutical companies and PK/Tox laboratories. Before joining Certara, William worked for pharmaceutical companies, headed up the Clinical PK/PD and Pharmacometrics department of a global CRO and was Senior PK assessor at the MHRA where he provided PK and PD assessments, interacting with non-clinical, pharmaceutical, medical assessors and with Company staff using appropriate CHMP and ICH guidelines. As a Member of the Modelling and Simulation Working Group to provide support to the European Medicines Agency’s scientific committees and working parties on modelling and simulation and more general methodological discussions and qualification procedures regarding modelling and simulation, he advised pharmaceutical companies on good clinical pharmacology trial design, adequacy of data, appropriate analyses and other pharmacokinetic issues relating to license applications, at company meetings.