Roger Cracknell has a PhD in Chemistry from Imperial College. He joined Shell in 1994 and in 2019 he was appointed to the role of Principal Science Expert within Shell. Roger is a Fellow of the Society of Automotive Engineers, a Fellow of the Royal Society of Chemistry, a Visiting Professor of Mechanical Engineering at the University of Leeds, and Honorary Professor of Mechanical Engineering at the University of Birmingham. He is also a member of the International Board of Directors of the Combustion Institute.