Peter’s main research field has been applied microeconomics. He has a particular interest in transport economics, especially economics of air transport, and the economics of tourism. He is on the Scientific Committees of conferences on Air Transport, such as the Air Transport Research Society, and is an Associate Editor of journals in this field. 

He has recently undertaken considerable research in modelling the economic impacts and benefits of tourism. He has also undertaken a number of studies of the impact of climate change policies on aviation and tourism.