Wimbledon, London as well as for Elisabeth Beresford's series of children's stories about the Wombles. Wimbledon was given as the site where the sixth Martian invasion cylinder landed in H.G. Wells' book "The War of the Worlds" and is mentioned briefly in the same author's "The Time Machine" and "When the Sleeper Wakes". Each October thousands attend the Wimbledon BookFest, which has been running since 2006. Over 60 events are held around Wimbledon, including at the Big Tent on the Common. Wimbledon, London Wimbledon is a district and town of south-west London, England, south-west of the centre of London at Charing Cross,
London Underground Electronic ticketing in the form of the contactless Oyster card was introduced in 2003. London Underground services on the East London line ceased in 2007 so that it could be extended and converted to London Overground operation, and in December 2009 the Circle line changed from serving a closed loop around the centre of London to a spiral also serving Hammersmith. Since September 2014, passengers have been able to use contactless cards on the Tube. Their use has grown very quickly and now over a million contactless transactions are made on the Underground every day. The Underground serves 270 stations.