Heathrow is the world's busiest airport - 45,000 people work here and cater for 75,000 passengers a day. Here is Bernadette MacDonald, check-in girl, never without a smile on her face. "It comes on when I arrive and it gets peeled off like a mask when I leave." Up on the roof the plane-spotters are bugging the control tower for up-to-date information. In terminal three, the photographers are snatching the stars. Today, it's Shirley Bassey. There are tearful farewells and happy reunions. And, as evening draws in, 86-year-old Mrs Amelia Goodman from Clacton-on-Sea prepares to make her first flight. She's never been further than Margate. Today she is emigrating to Australia to be with her family. Flying in is another great-grandmother - HM The Queen Mother. For her, it's just another flight; for Amelia it's a big, brave new experience. "Have I got to go in that?" she asks her son, as the Jumbo stands waiting. But go she does - giving everybody a little wave from the steps. Just like somebody else we all know and love...