London Underground ticketing London Underground ticketing The London Underground metro system of London, England uses a mix of paper and electronic smart-card ticketing. London Underground uses Transport for London's Travelcard zones to calculate fares, including fares on the Underground only. Travelcard Zone 1 is the most central, with a boundary just outside the Circle line and Travelcard Zone 6 is the most outlying zone covering any of Greater London and it includes London Heathrow Airport. All of Greater London is covered by zones 1 to 6. Tickets including zone 1 are usually more expensive than those involving only outer zones. The most popular
London Underground mosquito London Underground mosquito The London Underground mosquito is a form of mosquito in the genus "Culex". It is found in the London Underground railway system as its name suggests, but has a worldwide distribution and long predates the existence of the London Underground. It was first described as a distinct species from Egyptian specimens by the biologist Peter Forsskål (1732–1763). He named this mosquito "Culex molestus" due to its voracious biting, but later biologists renamed it "Culex pipiens" f. "molestus" because there were no morphological differences between it and "Culex pipiens". Notably, this mosquito assaulted Londoners sleeping in the Underground