The London Underground (Tube) has a network of 11 lines and is the world’s first underground railway system. With 250 miles of lines, it won’t be hard to find a tube station near you, except if you stay in zone 3 or further away.
In the UK, the subway or metro is called "Tube" or "Underground".
When you buy a single journey ticket for the Tube, you have to know what zone your stop is in and what zone you’re going to. Unless you’re staying in another zone, the most common zones for tourists to visit are 1 and 2.
Although you can get a map of the Underground in any Tube station once in London, you can check the following Tube map before getting to your holiday destination:
There is no set timetable for the tube in London, but it opens approximately at 5 am and closes at 12 am. Trains leave the first station at 12 am. Consequently, by the time it gets to the center it is normally after 12 am, so you’ll be able to take the last train at approximately 1 am.
Frequency depends on the different lines and the time of day it is, but in the centre of London you normally won’t have to wait more than 2 – 3 minutes to catch a train.
The DLR (Docklands Light Railway) and the London Overground are two additional lines that despite having different names, are completely integrated into the London Tube network. If we include these two lines, London’s Underground has 13 lines.
These two lines are interesting for visitors as they both run to Greenwich.