- London ranked as the 6th most expensive city in which to live in 2016.
- London was founded by the Romans, who named it Londinium.
- In London,
- it is illegal
- to die
- Despite its name, more than half of the London's Underground network in fact runs above ground.
- Over 300 languages are spoken in London, one of the most diverse cities in the world.
- There's a Cereal Cafe in London where you can eat hundreds of different kinds of cereals from around the world.
- London only reached its pre-WW2 population level in January, 2015.
- To be a London black cab driver, one is expected to know over 25,000 roads and 50,000 points of interest and pass a test called "The Knowledge."
- Today's British accent first appeared among London's upper class around the time of the American Revolution. Before that, the British accent was similar to that of Americans.
- In 2012, London became the first city to host the modern Summer Olympic Games three times.
- In the 16th century, a London law forbade wife beating after 9:00 P.M., but only because the noise disturbed people's sleep.
- In Victorian London, people were paid to collect dog poop. It was used to tan leather.
- The world's first traffic signal was short lived. Installed in London in 1868, it exploded less than a month later, injuring its policeman operator.
- The London Underground was originally intended to terminate in Paris.
- London is still paying rent to the Queen on a property leased in 1211. Horseshoes, 61 nails, an axe and billhook are part of the rent.
- Despite being a 177 m (581 ft) tall structure in the middle of central London, the location of the Post Office Tower was a national secret for years.
- London's after-hours economy generates £26.3bn ($32.3bn) every year.
- Every week, London Underground escalators travel the equivalent of twice around the world.
- 10,000 foxes live in London.
- 70% of all train journeys in England start or finish in London.
- There are so many trees in London, it can be classified as a forest, according to a UN definition.
- Young Londoners spend almost 60% of their income on rent alone.