Trouble-shooter Karen Jones deals with a collapsed passenger who has missed his flight, while the arrival of a South African with a large sum of money means immigration officer Eric Day has to be more inquisitive than usual.

The busiest day in Heathrow's history sees over 20,000 passengers pass through the airport. Karen Jones has to control the Terminal 3 crowds, and Ghana Airways'Eben Twum-Barima has more people at check-in than he can manage.

A special edition of the series about life at Heathrow airport which focuses on some humorous moments which have featured in the past five series.