Heathrow moving 213,000 people a day, King's Cross and the Harry Potter platform, 21,000 black cab drivers who spend two years learning 25,000 streets, and the Tube that opened in 1863.
London transport is one of those subjects that sounds dry until the numbers arrive. Heathrow handles 1,250 aircraft and more than 213,000 people every day. Black cab drivers learn 25,000 streets and study for two years before they carry a passenger. The Underground opened in 1863, the oldest in the world, and now moves 2.5 million people a day over 410 kilometres of track.
King's Cross is in there for a different reason: children everywhere know it from the Harry Potter books, which makes it the easiest way into a lesson about a city most of the class has never seen. The narration is A1-A2, the figures are concrete enough to build comprehension questions from, and the whole thing runs just over two minutes.