Oxera reviewed the economic regulatory regimes at seven international airports: Auckland, Brussels, Copenhagen, Dusseldorf, Paris-Orly, Rome-Fiumicino and Sydney Airports. This review compared the main features of the regulatory regimes, including their incentives for investment and financing, the extent to which they promote consumers’ interests and competition, and the regulatory burden. The study enabled Gatwick Airport to understand how its regulatory regime compared to those of other international airports, and helped it to inform the regulatory debate in the UK.