In this episode, Mary is given an access-all-areas pass as she heads behind the scenes at Heathrow airport. Where everyone has one eye on the clock and a flight to catch, Mary wants to see how the restaurants and cafes feed the 80 million people that pass through the terminals each year in record-breaking time. Mary throws herself into the different roles needed to keep one of the busiest airports in the world fed and running smoothly, including a stint as an airport firefighter. In this episode, Mary whips up wonderful quick delights, including a rich chicken korma, a delicious apple sandwich cake and some extra special roast scallops.

• Mary Berry