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The London Underground (The Tube） The main source of public transport in London revolves around the Underground (or the Tube as it is known to Londoners). This network of 12 lines can get you to most places in the center of the city quickly. It’s most necessary to get an Oyster Card or a Travelcard. Single tickets are priced starting at the intentionally absurd (荒谬的) price of £ 4.80 (Zone 1-3), if you pay cash. Using an Oyster card, a single fare is £ 2.30 if you are traveling within thewww.dearedu.com central Zone 1. On hot days it is also advisable to take a bottle of water with you as Underground trains are not air-conditioned. Last trains leave central London at around 00:30 weekdays, 23:30 Sundays. First trains leave the suburbs at around 5:00. The Bus System Outside the center of London, Tube stations are farther apart, so buses help fill the gaps. Also, the bus offers a cheaper alternative, even if it is a slower journey. Cash fares for London buses have been abolished — you cannot pay cash. A bus fare costs £ 1.50 if using only buses, the fare is capped at £ 4.40 per day for Oyster or contactless users. River Services There are a number of different routes along the River Thames. The faster commuter services operate all day from Greenwich Pier to Embankment and from Putney and Chelsea harbour to Blackfriars during Peak Hours only. These routes will pass a number of places of interest including the Houses of Parliament and London Bridge. A return fare from Putney to Blackfriars will cost about 12 pounds. | 
