If you'll be travelling on consecutive weekend days, it's probably worth getting a Weekend Travelcard, which allow travel on consecutive weekend days or public holidays, and not on N-prefixed night buses. Photocards Photocards are required for all bus passes and Travelcards except the One-Day and Weekend versions. You can find them in the stations listed below. For lost property information, s ee p370 . Crime is not a major problem on the tube, although you would be wise to avoid getting into an empty carriage on your own, but beware of pickpockets.
Smoking is illegal anywhere on the underground system.
Night buses Night buses are the only form of public transport that runs through the night. All pass through central London and the majority stop at Trafalgar Square, so head there if you're unsure which bus to get. Pick up a free map and timetable from one of the LT Travel Information Centres. Rail services Independently owned commuter services run out of all the city's main line rail stations. Travelcards are valid on these services within the relevant zones.