The London Underground is the oldest, and most expansive metro systems in the world, dating 1863. The train system is commonly referred to as The Tube which has eleven interconnecting lines. London's bus network is one of the largest in the world, running 24 hours a day.
London Heathrow Airport is the one of the most busiest airports in the world. There are other airports in england which handles low-cost short distance flights, such as London Gatwick Airport, London Stansted Airport, and London Luton Airport.