Heathrow: Britain’s Busiest Airport

8pm, ITV Keeping up with the latest advice about where travellers can and can’t go hasn’t been easy. When 12 new countries are added to the permitted travel list, the Heathrow staff try to keep things simple with a traffic-light system, but still find themselves dealing with confused passengers. Meanwhile, Sergeant Dawson is searching for a child that’s gone missing in Terminal 2.