London Tube — Greater London is served by 12 Tube lines, along with the Docklands Light Railway (DLR) and an interconnected local train network. Underground trains generally run between 5am and midnight, Monday to Saturday, and operating hours are reduced on Sunday. Exact details depend on the station and the line, so it’s worth checking the Transport for London website:
For the purposes of working out different fares, London’s transport map is divided into six concentric zones. Zone 1 and 2 are in Central London and Zones 6 to 9 cover the outer edge of the capital.
Consider purchasing an Oyster card and/or a Travelcard to get the best fares and beat the queues. If you’re caught on the Tube without a valid ticket you’re liable for an on-the-spot fine.
Oyster card prices are always cheaper than paper tickets for the Tube. For example, the cash fare for a single journey in Zone 1 is £4.50, which is £2.40 more than the Oyster fare. See the Oyster website for more info on the deals it offers: www.oystercard.com