Central line (London Underground) Central line (London Underground) The Central line is a London Underground line that runs through central London, from , Essex, in the north-east to and in the west. Coloured red on the Tube map, the line serves 49 stations over , which makes it the longest Tube line. It is also one of only two lines on the Underground network to cross the Greater London boundary, the other being the Metropolitan line. One of London's deep-level railways, Central line trains are smaller than those on British main lines. The line was opened as the Central London Railway in 1900, crossing
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