London is one of the world’s great cities. It has vibrant entertainment, fashion and tourist industries. It’s one of Europe’s financial centres. It’s an architectural masterpiece that’s home to dozens of important buildings. It has 300 theatres and 43 universities. It’s a young city: some 31% of the population is 24 or younger. It’s an old city: people have lived there since 4500 B.C. London is so vast that it can’t be summed up in a few words, but perhaps the 18th-century writer, Samuel Johnson, said it best: “When a man is tired of London, he is tired of life”.