The main source of public transport in London is the Underground. Londoners call it the Tube. Its network of 12 lines very well covers London and can get you to most places relatively quickly. Notwithstanding the delays that are not uncommon, it is faster than travelling by car.  Each line has its own colour making it easy to identify on a map which you can pick up free of charge at all train station ticket offices. Using the Tube even with the map can be a bit confusing until you get the hang of it all. However, tube staff is there to help and can be found at station ticket barriers and on some platforms.

The Bus is a nice alternative to the Tube; it is cheaper and offers more chances for sightseeing. It is certainly a slower journey though.

London transport network is divided into fare zones from its centre to the edge of the suburbs. Zone 1 is the most central zone and the outer one is Zone 6. The more zones you travel in, the more you pay. For example, if you live in Zone 2 and work in Zone 1, you will spend less on transportation than your colleague living in Zone 3.

In order to use public transport you have to get an Oyster Card (paying by cash is possible but single tickets have absurd prices!). Using an Oyster Card is not only cheaper but also much more convenient. It is a permanent card that allows you to access all forms of London transport. You can get through the Tube gates or get on other public transport by simply touching the yellow reader of the Oyster card. You don’t even have to take out the card from your wallet. An Oyster Card can be loaded with cash amounts but if you are a regular commuter it is cheaper to load a Travelcard onto your Oyster Card. You can add the daily, weekly, monthly, or yearly Travelcards to it.