Episode 4

Another visit to one of Britain's busiest airport terminals, in the company of Matt Lucas and David Walliams.

There is a bumpy ride ahead for husband-and-wife pilot team Simon and Jackie when Simon's one-night stand is rostered onto their flight to Barcelona. Can their marriage survive this latest turn of events?

Low-cost airline FlyLo becomes carbon-neutral at the insistence of owner Omar Baba, and we find out which member of FlyLo's glamorous check-in staff is the object of desire for Tommy Reid.

Up in first class, Penny gets a discreet visit from a member of the Royal Household, and we follow the important work of dog handler Steve Downes and his canine partner Bobo as they patrol the baggage halls for contraband.