With ever-increasing numbers of passengers passing through their terminals, Britain's airports are raking in huge profits, which are only set to get bigger as they seek expansion through extra runways or terminals. But matching the increase in passenger numbers is the threat from terrorism and concerns about the environment. In this edition of Dispatches , reporter Andrew Gilligan investigates the priorities and business tactics of the airports industry, asking how secure our airports are and who will be the winners and losers from airport expansion.

Monday 25 February 2008 on 8:00pm on Channel 4