Corne van Walbeek is a Professor of Economics at the University of Cape Town. He is also the Director of the Research Unit in the Economics of Excisable Products. He has more than 20 years' experience in the economics of tobacco control., focusing on tobacco taxation, tax modelling and the impact that tax and price changes have on the smoking behaviour of different demographic groups. In recent years his research focus has moved towards the quantification of the illicit cigarette market in South Africa.